Merge pull request #173 from lbryio/blob-prices

Blob prices

lbrynet/conf.py

@@ -14,7 +14,7 @@ MAX_BLOB_INFOS_TO_REQUEST = 20
 BLOBFILES_DIR = ".blobfiles"
 BLOB_SIZE = 2**21
 
-MIN_BLOB_DATA_PAYMENT_RATE = .005  # points/megabyte
+MIN_BLOB_DATA_PAYMENT_RATE = .0001  # points/megabyte
 MIN_BLOB_INFO_PAYMENT_RATE = .02  # points/1000 infos
 MIN_VALUABLE_BLOB_INFO_PAYMENT_RATE = .05  # points/1000 infos
 MIN_VALUABLE_BLOB_HASH_PAYMENT_RATE = .05  # points/1000 infos
@@ -28,12 +28,10 @@ KNOWN_DHT_NODES = [('104.236.42.182', 4000),
 POINTTRADER_SERVER = 'http://ec2-54-187-192-68.us-west-2.compute.amazonaws.com:2424'
 #POINTTRADER_SERVER = 'http://127.0.0.1:2424'
 
-if IS_DEVELOPMENT_VERSION:
-    SEARCH_SERVERS = ["http://107.170.207.64:50005"]
-else:
-    SEARCH_SERVERS = ["http://lighthouse1.lbry.io:50005",
-                      "http://lighthouse2.lbry.io:50005",
-                      "http://lighthouse3.lbry.io:50005"]
+
+SEARCH_SERVERS = ["http://lighthouse1.lbry.io:50005",
+                    "http://lighthouse2.lbry.io:50005",
+                    "http://lighthouse3.lbry.io:50005"]
 
 REFLECTOR_SERVERS = [("reflector.lbry.io", 5566)]
 

lbrynet/core/BlobAvailability.py

@@ -0,0 +1,89 @@
+import logging
+
+from twisted.internet import defer
+from twisted.internet.task import LoopingCall
+from decimal import Decimal
+
+log = logging.getLogger(__name__)
+
+
+class BlobAvailabilityTracker(object):
+    """
+    Class to track peer counts for known blobs, and to discover new popular blobs
+
+    Attributes:
+        availability (dict): dictionary of peers for known blobs
+    """
+
+    def __init__(self, blob_manager, peer_finder, dht_node):
+        self.availability = {}
+        self.last_mean_availability = Decimal(0.0)
+        self._blob_manager = blob_manager
+        self._peer_finder = peer_finder
+        self._dht_node = dht_node
+        self._check_popular = LoopingCall(self._update_most_popular)
+        self._check_mine = LoopingCall(self._update_mine)
+
+    def start(self):
+        log.info("Starting blob tracker")
+        self._check_popular.start(30)
+        self._check_mine.start(120)
+
+    def stop(self):
+        if self._check_popular.running:
+            self._check_popular.stop()
+        if self._check_mine.running:
+            self._check_mine.stop()
+
+    def get_blob_availability(self, blob):
+        def _get_peer_count(peers):
+            have_blob = sum(1 for peer in peers if peer.is_available())
+            return {blob: have_blob}
+
+        d = self._peer_finder.find_peers_for_blob(blob)
+        d.addCallback(_get_peer_count)
+        return d
+
+    def get_availability_for_blobs(self, blobs):
+        dl = [self.get_blob_availability(blob) for blob in blobs if blob]
+        d = defer.DeferredList(dl)
+        d.addCallback(lambda results: [val for success, val in results if success])
+        return d
+
+    def _update_peers_for_blob(self, blob):
+        def _save_peer_info(blob_hash, peers):
+            v = {blob_hash: peers}
+            self.availability.update(v)
+            return v
+
+        d = self._peer_finder.find_peers_for_blob(blob)
+        d.addCallback(lambda r: [[c.host, c.port, c.is_available()] for c in r])
+        d.addCallback(lambda peers: _save_peer_info(blob, peers))
+        return d
+
+    def _get_most_popular(self):
+        dl = []
+        for (hash, _) in self._dht_node.get_most_popular_hashes(100):
+            encoded = hash.encode('hex')
+            dl.append(self._update_peers_for_blob(encoded))
+        return defer.DeferredList(dl)
+
+    def _update_most_popular(self):
+        d = self._get_most_popular()
+        d.addCallback(lambda _: self._get_mean_peers())
+
+    def _update_mine(self):
+        def _get_peers(blobs):
+            dl = []
+            for hash in blobs:
+                dl.append(self._update_peers_for_blob(hash))
+            return defer.DeferredList(dl)
+
+        d = self._blob_manager.get_all_verified_blobs()
+        d.addCallback(_get_peers)
+        d.addCallback(lambda _: self._get_mean_peers())
+
+    def _get_mean_peers(self):
+        num_peers = [len(self.availability[blob]) for blob in self.availability]
+        mean = Decimal(sum(num_peers)) / Decimal(max(1, len(num_peers)))
+        self.last_mean_availability = mean

lbrynet/core/BlobManager.py

@@ -2,6 +2,7 @@ import logging
 import os
 import time
 import sqlite3
+
 from twisted.internet import threads, defer
 from twisted.python.failure import Failure
 from twisted.enterprise import adbapi
@@ -12,7 +13,6 @@ from lbrynet.core.cryptoutils import get_lbry_hash_obj
 from lbrynet.core.Error import NoSuchBlobError
 from lbrynet.core.sqlite_helpers import rerun_if_locked
 
-
 log = logging.getLogger(__name__)
 
 
@@ -70,6 +70,12 @@ class BlobManager(DHTHashSupplier):
     def get_all_verified_blobs(self):
         pass
 
+    def add_blob_to_download_history(self, blob_hash, host, rate):
+        pass
+
+    def add_blob_to_upload_history(self, blob_hash, host, rate):
+        pass
+
 
 class DiskBlobManager(BlobManager):
     """This class stores blobs on the hard disk"""
@@ -185,6 +191,14 @@ class DiskBlobManager(BlobManager):
         d.addCallback(self.completed_blobs)
         return d
 
+    def add_blob_to_download_history(self, blob_hash, host, rate):
+        d = self._add_blob_to_download_history(blob_hash, host, rate)
+        return d
+
+    def add_blob_to_upload_history(self, blob_hash, host, rate):
+        d = self._add_blob_to_upload_history(blob_hash, host, rate)
+        return d
+
     def _manage(self):
         from twisted.internet import reactor
 
@@ -243,12 +257,29 @@ class DiskBlobManager(BlobManager):
         # one that opened it. The individual connections in the pool are not used in multiple
         # threads.
         self.db_conn = adbapi.ConnectionPool('sqlite3', self.db_file, check_same_thread=False)
-        return self.db_conn.runQuery("create table if not exists blobs (" +
-                                     "    blob_hash text primary key, " +
-                                     "    blob_length integer, " +
-                                     "    last_verified_time real, " +
-                                     "    next_announce_time real"
-                                     ")")
+
+        def create_tables(transaction):
+            transaction.execute("create table if not exists blobs (" +
+                                "    blob_hash text primary key, " +
+                                "    blob_length integer, " +
+                                "    last_verified_time real, " +
+                                "    next_announce_time real)")
+
+            transaction.execute("create table if not exists download (" +
+                                "    id integer primary key autoincrement, " +
+                                "    blob text, " +
+                                "    host text, " +
+                                "    rate float, " +
+                                "    ts integer)")
+
+            transaction.execute("create table if not exists upload (" +
+                                "    id integer primary key autoincrement, " +
+                                "    blob text, " +
+                                "    host text, " +
+                                "    rate float, " +
+                                "    ts integer)")
+
+        return self.db_conn.runInteraction(create_tables)
 
     @rerun_if_locked
     def _add_completed_blob(self, blob_hash, length, timestamp, next_announce_time=None):
@@ -426,6 +457,18 @@ class DiskBlobManager(BlobManager):
         d.addCallback(lambda blobs: threads.deferToThread(get_verified_blobs, blobs))
         return d
 
+    @rerun_if_locked
+    def _add_blob_to_download_history(self, blob_hash, host, rate):
+        ts = int(time.time())
+        d = self.db_conn.runQuery("insert into download values (null, ?, ?, ?, ?) ", (blob_hash, str(host), float(rate), ts))
+        return d
+
+    @rerun_if_locked
+    def _add_blob_to_upload_history(self, blob_hash, host, rate):
+        ts = int(time.time())
+        d = self.db_conn.runQuery("insert into upload values (null, ?, ?, ?, ?) ", (blob_hash, str(host), float(rate), ts))
+        return d
+
 
 class TempBlobManager(BlobManager):
     """This class stores blobs in memory"""
@@ -526,7 +569,6 @@ class TempBlobManager(BlobManager):
         d.addCallback(lambda _: set_next_manage_call())
 
     def _delete_blobs_marked_for_deletion(self):
-
         def remove_from_list(b_h):
             del self.blob_hashes_to_delete[b_h]
             log.info("Deleted blob %s", blob_hash)
@@ -555,4 +597,4 @@ class TempBlobManager(BlobManager):
                     d = defer.fail(Failure(NoSuchBlobError(blob_hash)))
                     log.warning("Blob %s cannot be deleted because it is unknown")
                     ds.append(d)
-        return defer.DeferredList(ds)
+        return defer.DeferredList(ds)

lbrynet/core/Error.py

@@ -87,4 +87,8 @@ class NoSuchStreamHashError(Exception):
 
 
 class InvalidBlobHashError(Exception):
+    pass
+
+
+class NegotiationError(Exception):
     pass

lbrynet/core/Offer.py

@@ -0,0 +1,62 @@
+from decimal import Decimal
+
+
+class Offer(object):
+    """A rate offer to download blobs from a host."""
+
+    RATE_ACCEPTED = "RATE_ACCEPTED"
+    RATE_TOO_LOW = "RATE_TOO_LOW"
+    RATE_UNSET = "RATE_UNSET"
+
+    def __init__(self, offer):
+        self._state = None
+        self.rate = None
+        if isinstance(offer, Decimal):
+            self.rate = round(offer, 5)
+        elif isinstance(offer, float):
+            self.rate = round(Decimal(offer), 5)
+        if self.rate is None or self.rate < Decimal(0.0):
+            self.unset()
+
+    @property
+    def is_accepted(self):
+        return self._state is Offer.RATE_ACCEPTED
+
+    @property
+    def is_too_low(self):
+        return self._state is Offer.RATE_TOO_LOW
+
+    @property
+    def is_unset(self):
+        return self._state is Offer.RATE_UNSET
+
+    @property
+    def message(self):
+        if self.is_accepted:
+            return Offer.RATE_ACCEPTED
+        elif self.is_too_low:
+            return Offer.RATE_TOO_LOW
+        elif self.is_unset:
+            return Offer.RATE_UNSET
+        return None
+
+    def accept(self):
+        if self.is_unset or self._state is None:
+            self._state = Offer.RATE_ACCEPTED
+
+    def reject(self):
+        if self.is_unset or self._state is None:
+            self._state = Offer.RATE_TOO_LOW
+
+    def unset(self):
+        self._state = Offer.RATE_UNSET
+
+    def handle(self, reply_message):
+        if reply_message == Offer.RATE_TOO_LOW:
+            self.reject()
+        elif reply_message == Offer.RATE_ACCEPTED:
+            self.accept()
+        elif reply_message == Offer.RATE_UNSET:
+            self.unset()
+        else:
+            raise Exception("Unknown offer reply %s" % str(reply_message))

lbrynet/core/PaymentRateManager.py

@@ -1,6 +1,10 @@
+from lbrynet.core.Strategy import get_default_strategy
+from lbrynet.conf import MIN_BLOB_DATA_PAYMENT_RATE, MIN_BLOB_INFO_PAYMENT_RATE
+
 class BasePaymentRateManager(object):
-    def __init__(self, rate):
+    def __init__(self, rate=MIN_BLOB_DATA_PAYMENT_RATE, info_rate=MIN_BLOB_INFO_PAYMENT_RATE):
         self.min_blob_data_payment_rate = rate
+        self.min_blob_info_payment_rate = info_rate
 
 
 class PaymentRateManager(object):
@@ -26,4 +30,44 @@ class PaymentRateManager(object):
         return self.min_blob_data_payment_rate
 
     def record_points_paid(self, amount):
-        self.points_paid += amount
+        self.points_paid += amount
+
+
+class NegotiatedPaymentRateManager(object):
+    def __init__(self, base, availability_tracker, generous=True):
+        """
+        @param base: a BasePaymentRateManager
+        @param availability_tracker: a BlobAvailabilityTracker
+        @param rate: the min blob data payment rate
+        """
+
+        self.base = base
+        self.points_paid = 0.0
+        self.blob_tracker = availability_tracker
+        self.generous = generous
+        self.strategy = get_default_strategy(self.blob_tracker,
+                                             base_price=self.base.min_blob_data_payment_rate,
+                                             is_generous=generous)
+
+    def get_rate_blob_data(self, peer, blobs):
+        response = self.strategy.make_offer(peer, blobs)
+        return response.rate
+
+    def accept_rate_blob_data(self, peer, blobs, offer):
+        offer = self.strategy.respond_to_offer(offer, peer, blobs)
+        self.strategy.update_accepted_offers(peer, offer)
+        return offer.is_accepted
+
+    def reply_to_offer(self, peer, blobs, offer):
+        reply = self.strategy.respond_to_offer(offer, peer, blobs)
+        self.strategy.update_accepted_offers(peer, reply)
+        return reply
+
+    def get_rate_for_peer(self, peer):
+        return self.strategy.accepted_offers.get(peer, False)
+
+    def record_points_paid(self, amount):
+        self.points_paid += amount
+
+    def record_offer_reply(self, peer, offer):
+        self.strategy.update_accepted_offers(peer, offer)

lbrynet/core/Peer.py

@@ -1,5 +1,6 @@
-from collections import defaultdict
 import datetime
+from collections import defaultdict
+from lbrynet.core import utils
 
 
 class Peer(object):
@@ -12,8 +13,7 @@ class Peer(object):
         self.stats = defaultdict(float)  # {string stat_type, float count}
 
     def is_available(self):
-        if (self.attempt_connection_at is None or
-            datetime.datetime.today() > self.attempt_connection_at):
+        if self.attempt_connection_at is None or utils.today() > self.attempt_connection_at:
             return True
         return False
 
@@ -24,7 +24,7 @@ class Peer(object):
     def report_down(self):
         self.down_count += 1
         timeout_time = datetime.timedelta(seconds=60 * self.down_count)
-        self.attempt_connection_at = datetime.datetime.today() + timeout_time
+        self.attempt_connection_at = utils.today() + timeout_time
 
     def update_score(self, score_change):
         self.score += score_change
@@ -37,4 +37,3 @@ class Peer(object):
 
     def __repr__(self):
         return 'Peer({!r}, {!r})'.format(self.host, self.port)
-

lbrynet/core/PriceModel.py

@@ -0,0 +1,47 @@
+from zope.interface import implementer
+from decimal import Decimal
+
+from lbrynet.interfaces import IBlobPriceModel
+from lbrynet.conf import MIN_BLOB_DATA_PAYMENT_RATE
+
+
+def get_default_price_model(blob_tracker, base_price, **kwargs):
+    return MeanAvailabilityWeightedPrice(blob_tracker, base_price, **kwargs)
+
+
+class MeanAvailabilityWeightedPrice(object):
+    """
+    Calculate mean-blob-availability and stream-position weighted price for a blob
+
+    Attributes:
+        base_price (float): base price
+        alpha (float): constant, > 0.0 and <= 1.0, used to more highly value blobs at the beginning of a stream.
+                       alpha defaults to 1.0, which has a null effect
+        blob_tracker (BlobAvailabilityTracker): blob availability tracker
+    """
+    implementer(IBlobPriceModel)
+
+    def __init__(self, tracker, base_price=MIN_BLOB_DATA_PAYMENT_RATE, alpha=1.0):
+        self.blob_tracker = tracker
+        self.base_price = Decimal(base_price)
+        self.alpha = Decimal(alpha)
+
+    def calculate_price(self, blob):
+        mean_availability = self.blob_tracker.last_mean_availability
+        availability = self.blob_tracker.availability.get(blob, [])
+        index = 0  # blob.index
+        price = self.base_price * (mean_availability / Decimal(max(1, len(availability)))) / self._frontload(index)
+        return round(price, 5)
+
+    def _frontload(self, index):
+        """
+        Get front-load multiplier, used to weight prices of blobs in a stream towards the front of the stream.
+
+        At index 0, returns 1.0
+        As index increases, return value approaches 2.0
+
+        @param index: blob position in stream
+        @return: front-load multiplier
+        """
+
+        return Decimal(2.0) - (self.alpha ** index)

lbrynet/core/Session.py

@@ -9,7 +9,8 @@ from lbrynet.core.client.DHTPeerFinder import DHTPeerFinder
 from lbrynet.core.HashAnnouncer import DummyHashAnnouncer
 from lbrynet.core.server.DHTHashAnnouncer import DHTHashAnnouncer
 from lbrynet.core.utils import generate_id
-from lbrynet.core.PaymentRateManager import BasePaymentRateManager
+from lbrynet.core.PaymentRateManager import BasePaymentRateManager, NegotiatedPaymentRateManager
+from lbrynet.core.BlobAvailability import BlobAvailabilityTracker
 from twisted.internet import threads, defer
 
 
@@ -26,9 +27,9 @@ class Session(object):
     the rate limiter, which attempts to ensure download and upload rates stay below a set maximum,
     and upnp, which opens holes in compatible firewalls so that remote peers can connect to this peer."""
     def __init__(self, blob_data_payment_rate, db_dir=None, lbryid=None, peer_manager=None, dht_node_port=None,
-                 known_dht_nodes=None, peer_finder=None, hash_announcer=None,
-                 blob_dir=None, blob_manager=None, peer_port=None, use_upnp=True,
-                 rate_limiter=None, wallet=None, dht_node_class=node.Node):
+                 known_dht_nodes=None, peer_finder=None, hash_announcer=None, blob_dir=None, blob_manager=None,
+                 peer_port=None, use_upnp=True, rate_limiter=None, wallet=None, dht_node_class=node.Node,
+                 blob_tracker_class=None, payment_rate_manager_class=None):
         """
         @param blob_data_payment_rate: The default payment rate for blob data
 
@@ -88,6 +89,9 @@ class Session(object):
         self.blob_dir = blob_dir
         self.blob_manager = blob_manager
 
+        self.blob_tracker = None
+        self.blob_tracker_class = blob_tracker_class or BlobAvailabilityTracker
+
         self.peer_port = peer_port
 
         self.use_upnp = use_upnp
@@ -103,6 +107,8 @@ class Session(object):
         self.dht_node = None
 
         self.base_payment_rate_manager = BasePaymentRateManager(blob_data_payment_rate)
+        self.payment_rate_manager = None
+        self.payment_rate_manager_class = payment_rate_manager_class or NegotiatedPaymentRateManager
 
     def setup(self):
         """Create the blob directory and database if necessary, start all desired services"""
@@ -136,6 +142,8 @@ class Session(object):
     def shut_down(self):
         """Stop all services"""
         ds = []
+        if self.blob_manager is not None:
+            ds.append(defer.maybeDeferred(self.blob_tracker.stop))
         if self.dht_node is not None:
             ds.append(defer.maybeDeferred(self.dht_node.stop))
         if self.rate_limiter is not None:
@@ -253,15 +261,26 @@ class Session(object):
             if self.blob_dir is None:
                 self.blob_manager = TempBlobManager(self.hash_announcer)
             else:
-                self.blob_manager = DiskBlobManager(self.hash_announcer, self.blob_dir, self.db_dir)
+                self.blob_manager = DiskBlobManager(self.hash_announcer,
+                                                    self.blob_dir,
+                                                    self.db_dir)
+
+        if self.blob_tracker is None:
+            self.blob_tracker = self.blob_tracker_class(self.blob_manager,
+                                                        self.peer_finder,
+                                                        self.dht_node)
+        if self.payment_rate_manager is None:
+            self.payment_rate_manager = self.payment_rate_manager_class(self.base_payment_rate_manager,
+                                                                        self.blob_tracker)
 
         self.rate_limiter.start()
         d1 = self.blob_manager.setup()
         d2 = self.wallet.start()
 
         dl = defer.DeferredList([d1, d2], fireOnOneErrback=True, consumeErrors=True)
+        dl.addCallback(lambda _: self.blob_tracker.start())
 
-        dl.addErrback(lambda err: err.value.subFailure)
+        dl.addErrback(self._subfailure)
         return dl
 
     def _unset_upnp(self):
@@ -282,3 +301,9 @@ class Session(object):
         d = threads.deferToThread(threaded_unset_upnp)
         d.addErrback(lambda err: str(err))
         return d
+
+    def _subfailure(self, err):
+        log.error(err.getTraceback())
+        return err.value
+
+

lbrynet/core/Strategy.py

@@ -0,0 +1,124 @@
+from zope.interface import implementer
+from decimal import Decimal
+from lbrynet.interfaces import INegotiationStrategy
+from lbrynet.core.Offer import Offer
+from lbrynet.core.PriceModel import MeanAvailabilityWeightedPrice
+
+
+def get_default_strategy(blob_tracker, **kwargs):
+    return BasicAvailabilityWeightedStrategy(blob_tracker, **kwargs)
+
+
+class Strategy(object):
+    """
+    Base for negotiation strategies
+    """
+    implementer(INegotiationStrategy)
+
+    def __init__(self, price_model, max_rate, min_rate, is_generous=True):
+        self.price_model = price_model
+        self.is_generous = is_generous
+        self.accepted_offers = {}
+        self.offers_sent = {}
+        self.offers_received = {}
+        self.max_rate = max_rate or Decimal(self.price_model.base_price * 100)
+        self.min_rate = Decimal(min_rate)
+
+    def _make_rate_offer(self, rates, offer_count):
+        return NotImplementedError()
+
+    def _get_response_rate(self, rates, offer_count):
+        return NotImplementedError()
+
+    def make_offer(self, peer, blobs):
+        offer_count = self.offers_sent.get(peer, 0)
+        self._add_offer_sent(peer)
+        if peer in self.accepted_offers:
+            # if there was a previous accepted offer, use that
+            offer = self.accepted_offers[peer]
+        elif offer_count == 0 and self.is_generous:
+            # Try asking for it for free
+            offer = Offer(Decimal(0.0))
+        else:
+            rates = [self.price_model.calculate_price(blob) for blob in blobs]
+            price = self._make_rate_offer(rates, offer_count)
+            offer = Offer(price)
+        return offer
+
+    def respond_to_offer(self, offer, peer, blobs):
+        offer_count = self.offers_received.get(peer, 0)
+        self._add_offer_received(peer)
+        rates = [self.price_model.calculate_price(blob) for blob in blobs]
+        price = self._get_response_rate(rates, offer_count)
+
+        if peer in self.accepted_offers:
+            offer = self.accepted_offers[peer]
+        elif offer.rate == 0.0 and offer_count == 0 and self.is_generous:
+            # give blobs away for free by default on the first request
+            offer.accept()
+            self.accepted_offers.update({peer: offer})
+        elif offer.rate >= price:
+            offer.accept()
+            self.accepted_offers.update({peer: offer})
+        else:
+            offer.reject()
+            if peer in self.accepted_offers:
+                del self.accepted_offers[peer]
+        return offer
+
+    def update_accepted_offers(self, peer, offer):
+        if not offer.is_accepted and peer in self.accepted_offers:
+            del self.accepted_offers[peer]
+        if offer.is_accepted:
+            self.accepted_offers.update({peer: offer})
+
+    def _add_offer_sent(self, peer):
+        turn = self.offers_sent.get(peer, 0) + 1
+        self.offers_sent.update({peer: turn})
+
+    def _add_offer_received(self, peer):
+        turn = self.offers_received.get(peer, 0) + 1
+        self.offers_received.update({peer: turn})
+
+    def _bounded_price(self, price):
+        price_for_return = Decimal(min(self.max_rate, max(price, self.min_rate)))
+        return price_for_return
+
+
+class BasicAvailabilityWeightedStrategy(Strategy):
+    """
+    Basic strategy to target blob prices based on supply relative to mean supply
+
+    Discount price target with each incoming request, and raise it with each outgoing from the modeled price
+    until the rate is accepted or a threshold is reached
+    """
+    implementer(INegotiationStrategy)
+
+    def __init__(self, blob_tracker, acceleration=1.25, deceleration=0.9, max_rate=None, min_rate=0.0,
+                                    is_generous=True, base_price=0.0001, alpha=1.0):
+        price_model = MeanAvailabilityWeightedPrice(blob_tracker, base_price=base_price, alpha=alpha)
+        Strategy.__init__(self, price_model, max_rate, min_rate, is_generous)
+        self._acceleration = Decimal(acceleration)  # rate of how quickly to ramp offer
+        self._deceleration = Decimal(deceleration)
+
+    def _get_mean_rate(self, rates):
+        mean_rate = Decimal(sum(rates)) / Decimal(max(len(rates), 1))
+        return mean_rate
+
+    def _premium(self, rate, turn):
+        return rate * (self._acceleration ** Decimal(turn))
+
+    def _discount(self, rate, turn):
+        return rate * (self._deceleration ** Decimal(turn))
+
+    def _get_response_rate(self, rates, offer_count):
+        rate = self._get_mean_rate(rates)
+        discounted = self._discount(rate, offer_count)
+        rounded_price = round(discounted, 5)
+        return self._bounded_price(rounded_price)
+
+    def _make_rate_offer(self, rates, offer_count):
+        rate = self._get_mean_rate(rates)
+        with_premium = self._premium(rate, offer_count)
+        rounded_price = round(with_premium, 5)
+        return self._bounded_price(rounded_price)

lbrynet/core/Wallet.py

@@ -550,6 +550,9 @@ class Wallet(object):
         d.addCallback(_decode)
         return d
 
+    def get_claim_metadata_for_sd_hash(self, sd_hash):
+        return self._get_claim_metadata_for_sd_hash(sd_hash)
+
     def get_name_and_validity_for_sd_hash(self, sd_hash):
         d = self._get_claim_metadata_for_sd_hash(sd_hash)
         d.addCallback(lambda name_txid: self._get_status_of_claim(name_txid[1], name_txid[0], sd_hash) if name_txid is not None else None)

lbrynet/core/client/BlobRequester.py

@@ -1,25 +1,35 @@
-from collections import defaultdict
 import logging
+from collections import defaultdict
+from decimal import Decimal
+
 from twisted.internet import defer
 from twisted.python.failure import Failure
 from zope.interface import implements
-from lbrynet.core.Error import PriceDisagreementError, DownloadCanceledError, InsufficientFundsError
-from lbrynet.core.Error import InvalidResponseError, RequestCanceledError, NoResponseError
+
 from lbrynet.core.Error import ConnectionClosedBeforeResponseError
+from lbrynet.core.Error import InvalidResponseError, RequestCanceledError, NoResponseError
+from lbrynet.core.Error import PriceDisagreementError, DownloadCanceledError, InsufficientFundsError
 from lbrynet.core.client.ClientRequest import ClientRequest, ClientBlobRequest
 from lbrynet.interfaces import IRequestCreator
+from lbrynet.core.Offer import Offer
 
 
 log = logging.getLogger(__name__)
 
 
 def get_points(num_bytes, rate):
-    return 1.0 * num_bytes * rate / 2**20
+    if isinstance(rate, float):
+        return 1.0 * num_bytes * rate / 2**20
+    elif isinstance(rate, Decimal):
+        return 1.0 * num_bytes * float(rate) / 2**20
+    else:
+        raise Exception("Unknown rate type")
 
 
 def cache(fn):
     """Caches the function call for each instance"""
     attr = '__{}_value'.format(fn.__name__)
+
     def helper(self):
         if not hasattr(self, attr):
             value = fn(self)
@@ -42,6 +52,7 @@ class BlobRequester(object):
         self._unavailable_blobs = defaultdict(list)  # {Peer: [blob_hash]}}
         self._protocol_prices = {}  # {ClientProtocol: price}
         self._price_disagreements = []  # [Peer]
+        self._protocol_tries = {}
         self._incompatible_peers = []
 
     ######## IRequestCreator #########
@@ -65,9 +76,9 @@ class BlobRequester(object):
 
     def _send_next_request(self, peer, protocol):
         log.debug('Sending a blob request for %s and %s', peer, protocol)
-        availability = AvailabilityRequest(self, peer, protocol)
-        download = DownloadRequest(self, peer, protocol, self.wallet, self.payment_rate_manager)
-        price = PriceRequest(self, peer, protocol)
+        availability = AvailabilityRequest(self, peer, protocol, self.payment_rate_manager)
+        download = DownloadRequest(self, peer, protocol, self.payment_rate_manager, self.wallet)
+        price = PriceRequest(self, peer, protocol, self.payment_rate_manager)
 
         sent_request = False
         if availability.can_make_request():
@@ -161,10 +172,11 @@ class BlobRequester(object):
 
 
 class RequestHelper(object):
-    def __init__(self, requestor, peer, protocol):
+    def __init__(self, requestor, peer, protocol, payment_rate_manager):
         self.requestor = requestor
         self.peer = peer
         self.protocol = protocol
+        self.payment_rate_manager = payment_rate_manager
 
     @property
     def protocol_prices(self):
@@ -197,10 +209,10 @@ class RequestHelper(object):
             return
         return reason
 
-    def get_and_save_rate_for_protocol(self):
+    def get_and_save_rate(self):
         rate = self.protocol_prices.get(self.protocol)
         if rate is None:
-            rate = self.requestor.payment_rate_manager.get_rate_blob_data(self.peer)
+            rate = self.payment_rate_manager.get_rate_blob_data(self.peer, self.available_blobs)
             self.protocol_prices[self.protocol] = rate
         return rate
 
@@ -322,12 +334,59 @@ class AvailabilityRequest(RequestHelper):
             self.unavailable_blobs.remove(blob_hash)
 
 
+class PriceRequest(RequestHelper):
+    """Ask a peer if a certain price is acceptable"""
+    def can_make_request(self):
+        return self.get_and_save_rate() is not None
+
+    def make_request_and_handle_response(self):
+        request = self._get_price_request()
+        self._handle_price_request(request)
+
+    def _get_price_request(self):
+        rate = self.get_and_save_rate()
+        if rate is None:
+            log.debug("No blobs to request from %s", self.peer)
+            raise Exception('Cannot make a price request without a payment rate')
+        log.debug("Offer rate %s to %s for %i blobs", rate, self.peer, len(self.available_blobs))
+
+        request_dict = {'blob_data_payment_rate': rate}
+        return ClientRequest(request_dict, 'blob_data_payment_rate')
+
+    def _handle_price_request(self, price_request):
+        d = self.protocol.add_request(price_request)
+        d.addCallback(self._handle_price_response, price_request)
+        d.addErrback(self._request_failed, "price request")
+
+    def _handle_price_response(self, response_dict, request):
+        assert request.response_identifier == 'blob_data_payment_rate'
+        if 'blob_data_payment_rate' not in response_dict:
+            return InvalidResponseError("response identifier not in response")
+        assert self.protocol in self.protocol_prices
+        rate = self.protocol_prices[self.protocol]
+        offer = Offer(rate)
+        offer.handle(response_dict['blob_data_payment_rate'])
+        self.payment_rate_manager.record_offer_reply(self.peer.host, offer)
+
+        if offer.is_accepted:
+            log.debug("Offered rate %f/mb accepted by %s", rate, str(self.peer.host))
+            return True
+        elif offer.is_too_low:
+            log.debug("Offered rate %f/mb rejected by %s", rate, str(self.peer.host))
+            del self.protocol_prices[self.protocol]
+            return True
+        else:
+            log.warning("Price disagreement")
+            del self.protocol_prices[self.protocol]
+            self.requestor._price_disagreements.append(self.peer)
+            return False
+
+
 class DownloadRequest(RequestHelper):
     """Choose a blob and download it from a peer and also pay the peer for the data."""
-    def __init__(self, requestor, peer, protocol, wallet, payment_rate_manager):
-        RequestHelper.__init__(self, requestor, peer, protocol)
+    def __init__(self, requester, peer, protocol, payment_rate_manager, wallet):
+        RequestHelper.__init__(self, requester, peer, protocol, payment_rate_manager)
         self.wallet = wallet
-        self.payment_rate_manager = payment_rate_manager
 
     def can_make_request(self):
         return self.get_blob_details()
@@ -413,6 +472,9 @@ class DownloadRequest(RequestHelper):
     def _pay_or_cancel_payment(self, arg, reserved_points, blob):
         if self._can_pay_peer(blob, arg):
             self._pay_peer(blob.length, reserved_points)
+            d = self.requestor.blob_manager.add_blob_to_download_history(str(blob),
+                                                                         str(self.peer.host),
+                                                                         float(self.protocol_prices[self.protocol]))
         else:
             self._cancel_points(reserved_points)
         return arg
@@ -425,7 +487,7 @@ class DownloadRequest(RequestHelper):
 
     def _pay_peer(self, num_bytes, reserved_points):
         assert num_bytes != 0
-        rate = self.get_and_save_rate_for_protocol()
+        rate = self.get_and_save_rate()
         point_amount = get_points(num_bytes, rate)
         self.wallet.send_points(reserved_points, point_amount)
         self.payment_rate_manager.record_points_paid(point_amount)
@@ -452,7 +514,7 @@ class DownloadRequest(RequestHelper):
         # not yet been set for this protocol or for it to have been
         # removed so instead I switched it to check if a rate has been set
         # and calculate it if it has not
-        rate = self.get_and_save_rate_for_protocol()
+        rate = self.get_and_save_rate()
         points_to_reserve = get_points(num_bytes, rate)
         return self.wallet.reserve_points(self.peer, points_to_reserve)
 
@@ -481,39 +543,4 @@ class BlobDownloadDetails(object):
 
     def counting_write_func(self, data):
         self.peer.update_stats('blob_bytes_downloaded', len(data))
-        return self.write_func(data)
-
-
-class PriceRequest(RequestHelper):
-    """Ask a peer if a certain price is acceptable"""
-    def can_make_request(self):
-        return self.get_and_save_rate_for_protocol() is not None
-
-    def make_request_and_handle_response(self):
-        request = self._get_price_request()
-        self._handle_price_request(request)
-
-    def _get_price_request(self):
-        rate = self.get_and_save_rate_for_protocol()
-        if rate is None:
-            raise Exception('Cannot make a price request without a payment rate')
-        request_dict = {'blob_data_payment_rate': rate}
-        return ClientRequest(request_dict, 'blob_data_payment_rate')
-
-    def _handle_price_request(self, price_request):
-        d = self.protocol.add_request(price_request)
-        d.addCallback(self._handle_price_response, price_request)
-        d.addErrback(self._request_failed, "price request")
-
-    def _handle_price_response(self, response_dict, request):
-        assert request.response_identifier == 'blob_data_payment_rate'
-        if 'blob_data_payment_rate' not in response_dict:
-            return InvalidResponseError("response identifier not in response")
-        assert self.protocol in self.protocol_prices
-        response = response_dict['blob_data_payment_rate']
-        if response == "RATE_ACCEPTED":
-            return True
-        else:
-            del self.protocol_prices[self.protocol]
-            self.requestor._price_disagreements.append(self.peer)
-        return True
+        return self.write_func(data)

lbrynet/core/client/ClientProtocol.py

@@ -1,5 +1,6 @@
 import json
 import logging
+from decimal import Decimal
 from twisted.internet import error, defer
 from twisted.internet.protocol import Protocol, ClientFactory
 from twisted.python import failure
@@ -14,6 +15,12 @@ from zope.interface import implements
 log = logging.getLogger(__name__)
 
 
+def encode_decimal(obj):
+    if isinstance(obj, Decimal):
+        return float(obj)
+    raise TypeError(repr(obj) + " is not JSON serializable")
+
+
 class ClientProtocol(Protocol):
     implements(IRequestSender, IRateLimited)
 
@@ -132,7 +139,7 @@ class ClientProtocol(Protocol):
     def _send_request_message(self, request_msg):
         # TODO: compare this message to the last one. If they're the same,
         # TODO: incrementally delay this message.
-        m = json.dumps(request_msg)
+        m = json.dumps(request_msg, default=encode_decimal)
         self.transport.write(m)
 
     def _get_valid_response(self, response_msg):
@@ -191,7 +198,9 @@ class ClientProtocol(Protocol):
             for success, result in results:
                 if success is False:
                     failed = True
-                    log.info("The connection is closing due to an error: %s", str(result.getTraceback()))
+                    if not isinstance(result.value, DownloadCanceledError):
+                        log.info(result.value)
+                        log.info("The connection is closing due to an error: %s", str(result.getTraceback()))
             if failed is False:
                 log.debug("Asking for another request.")
                 from twisted.internet import reactor
@@ -215,7 +224,7 @@ class ClientProtocol(Protocol):
             # TODO: always be this way. it's done this way now because the client has no other way
             # TODO: of telling the server it wants the download to stop. It would be great if the
             # TODO: protocol had such a mechanism.
-            log.info("Closing the connection to %s because the download of blob %s was canceled",
+            log.debug("Closing the connection to %s because the download of blob %s was canceled",
                      str(self.peer), str(self._blob_download_request.blob))
             #self.transport.loseConnection()
             #return True

lbrynet/core/log_support.py

@@ -73,12 +73,12 @@ def _log_decorator(fn):
 
 def disable_third_party_loggers():
     logging.getLogger('requests').setLevel(logging.WARNING)
+    logging.getLogger('urllib3').setLevel(logging.WARNING)
     logging.getLogger('BitcoinRPC').setLevel(logging.INFO)
 
 def disable_noisy_loggers():
     logging.getLogger('lbrynet.analytics.api').setLevel(logging.INFO)
-    logging.getLogger('lbrynet.core.client').setLevel(logging.INFO)
-    logging.getLogger('lbrynet.core.server').setLevel(logging.INFO)
+    logging.getLogger('lbrynet.core').setLevel(logging.INFO)
     logging.getLogger('lbrynet.dht').setLevel(logging.INFO)
     logging.getLogger('lbrynet.lbrynet_daemon').setLevel(logging.INFO)
     logging.getLogger('lbrynet.core.Wallet').setLevel(logging.INFO)

lbrynet/core/server/BlobAvailabilityHandler.py

@@ -40,7 +40,7 @@ class BlobAvailabilityHandler(object):
 
     def handle_queries(self, queries):
         if self.query_identifiers[0] in queries:
-            log.debug("Received the client's list of requested blobs")
+            log.info("Received the client's list of requested blobs")
             d = self._get_available_blobs(queries[self.query_identifiers[0]])
 
             def set_field(available_blobs):

lbrynet/core/server/BlobRequestHandler.py

@@ -1,8 +1,11 @@
 import logging
+
 from twisted.internet import defer
 from twisted.protocols.basic import FileSender
 from twisted.python.failure import Failure
 from zope.interface import implements
+
+from lbrynet.core.Offer import Offer
 from lbrynet.interfaces import IQueryHandlerFactory, IQueryHandler, IBlobSender
 
 
@@ -34,18 +37,20 @@ class BlobRequestHandler(object):
     implements(IQueryHandler, IBlobSender)
     PAYMENT_RATE_QUERY = 'blob_data_payment_rate'
     BLOB_QUERY = 'requested_blob'
+    AVAILABILITY_QUERY = 'requested_blobs'
 
     def __init__(self, blob_manager, wallet, payment_rate_manager):
         self.blob_manager = blob_manager
         self.payment_rate_manager = payment_rate_manager
         self.wallet = wallet
-        self.query_identifiers = [self.PAYMENT_RATE_QUERY, self.BLOB_QUERY]
+        self.query_identifiers = [self.PAYMENT_RATE_QUERY, self.BLOB_QUERY, self.AVAILABILITY_QUERY]
         self.peer = None
         self.blob_data_payment_rate = None
         self.read_handle = None
         self.currently_uploading = None
         self.file_sender = None
         self.blob_bytes_uploaded = 0
+        self._blobs_requested = []
 
     ######### IQueryHandler #########
 
@@ -55,51 +60,19 @@ class BlobRequestHandler(object):
         request_handler.register_blob_sender(self)
 
     def handle_queries(self, queries):
-        response = {}
+        response = defer.succeed({})
+        log.debug("Handle query: %s", str(queries))
+
+        if self.AVAILABILITY_QUERY in queries:
+            self._blobs_requested = queries[self.AVAILABILITY_QUERY]
+            response.addCallback(lambda r: self._reply_to_availability(r, self._blobs_requested))
         if self.PAYMENT_RATE_QUERY in queries:
-            self._handle_payment_rate_query(response, queries[self.PAYMENT_RATE_QUERY])
+            offered_rate = queries[self.PAYMENT_RATE_QUERY]
+            offer = Offer(offered_rate)
+            response.addCallback(lambda r: self._handle_payment_rate_query(offer, r))
         if self.BLOB_QUERY in queries:
-            return self._handle_blob_query(response, queries[self.BLOB_QUERY])
-        else:
-            return defer.succeed(response)
-
-    def _handle_payment_rate_query(self, response, query):
-        if not self.handle_blob_data_payment_rate(query):
-            response['blob_data_payment_rate'] = "RATE_TOO_LOW"
-        else:
-            response['blob_data_payment_rate'] = 'RATE_ACCEPTED'
-
-    def _handle_blob_query(self, response, query):
-        log.debug("Received the client's request to send a blob")
-        response['incoming_blob'] = {}
-
-        if self.blob_data_payment_rate is None:
-            response['incoming_blob']['error'] = "RATE_UNSET"
-            return defer.succeed(response)
-        else:
-            return self._send_blob(response, query)
-
-    def _send_blob(self, response, query):
-        d = self.blob_manager.get_blob(query, True)
-        d.addCallback(self.open_blob_for_reading, response)
-        return d
-
-    def open_blob_for_reading(self, blob, response):
-        def failure(msg):
-            log.warning("We can not send %s: %s", blob, msg)
-            response['incoming_blob']['error'] = "BLOB_UNAVAILABLE"
-            return response
-        if not blob.is_validated():
-            return failure("blob can't be validated")
-        read_handle = blob.open_for_reading()
-        if read_handle is None:
-            return failure("blob can't be opened")
-
-        self.currently_uploading = blob
-        self.read_handle = read_handle
-        log.info("Sending %s to client", blob)
-        response['incoming_blob']['blob_hash'] = blob.blob_hash
-        response['incoming_blob']['length'] = blob.length
+            incoming = queries[self.BLOB_QUERY]
+            response.addCallback(lambda r: self._reply_to_send_request(r, incoming))
         return response
 
     ######### IBlobSender #########
@@ -118,12 +91,91 @@ class BlobRequestHandler(object):
 
     ######### internal #########
 
-    def handle_blob_data_payment_rate(self, requested_payment_rate):
-        if not self.payment_rate_manager.accept_rate_blob_data(self.peer, requested_payment_rate):
-            return False
+    def _reply_to_availability(self, request, blobs):
+        d = self._get_available_blobs(blobs)
+
+        def set_available(available_blobs):
+            log.debug("available blobs: %s", str(available_blobs))
+            request.update({'available_blobs': available_blobs})
+            return request
+
+        d.addCallback(set_available)
+        return d
+
+    def _handle_payment_rate_query(self, offer, request):
+        blobs = self._blobs_requested
+        log.debug("Offered rate %f LBC/mb for %i blobs", offer.rate, len(blobs))
+        reply = self.payment_rate_manager.reply_to_offer(self.peer, blobs, offer)
+        if reply.is_accepted:
+            self.blob_data_payment_rate = offer.rate
+            request[self.PAYMENT_RATE_QUERY] = "RATE_ACCEPTED"
+            log.debug("Accepted rate: %f", offer.rate)
+        elif reply.is_too_low:
+            request[self.PAYMENT_RATE_QUERY] = "RATE_TOO_LOW"
+            log.debug("Reject rate: %f", offer.rate)
+        elif reply.is_unset:
+            log.warning("Rate unset")
+            request['incoming_blob'] = {'error': 'RATE_UNSET'}
+        log.debug("Returning rate query result: %s", str(request))
+
+        return request
+
+    def _handle_blob_query(self, response, query):
+        log.debug("Received the client's request to send a blob")
+        response['incoming_blob'] = {}
+
+        if self.blob_data_payment_rate is None:
+            response['incoming_blob'] = {'error': "RATE_UNSET"}
+            return response
         else:
-            self.blob_data_payment_rate = requested_payment_rate
-            return True
+            return self._send_blob(response, query)
+
+    def _send_blob(self, response, query):
+        d = self.blob_manager.get_blob(query, True)
+        d.addCallback(self.open_blob_for_reading, response)
+        return d
+
+    def open_blob_for_reading(self, blob, response):
+        response_fields = {}
+        d = defer.succeed(None)
+        if blob.is_validated():
+            read_handle = blob.open_for_reading()
+            if read_handle is not None:
+                self.currently_uploading = blob
+                self.read_handle = read_handle
+                log.info("Sending %s to client", str(blob))
+                response_fields['blob_hash'] = blob.blob_hash
+                response_fields['length'] = blob.length
+                response['incoming_blob'] = response_fields
+                d.addCallback(lambda _: self.record_transaction(blob))
+                d.addCallback(lambda _: response)
+                return d
+        log.debug("We can not send %s", str(blob))
+        response['incoming_blob'] = {'error': 'BLOB_UNAVAILABLE'}
+        d.addCallback(lambda _: response)
+        return d
+
+    def record_transaction(self, blob):
+        d = self.blob_manager.add_blob_to_upload_history(str(blob), self.peer.host, self.blob_data_payment_rate)
+        return d
+
+    def _reply_to_send_request(self, response, incoming):
+        response_fields = {}
+        response['incoming_blob'] = response_fields
+
+        if self.blob_data_payment_rate is None:
+            log.debug("Rate not set yet")
+            response['incoming_blob'] = {'error': 'RATE_UNSET'}
+            return defer.succeed(response)
+        else:
+            log.debug("Requested blob: %s", str(incoming))
+            d = self.blob_manager.get_blob(incoming, True)
+            d.addCallback(lambda blob: self.open_blob_for_reading(blob, response))
+            return d
+
+    def _get_available_blobs(self, requested_blobs):
+        d = self.blob_manager.completed_blobs(requested_blobs)
+        return d
 
     def send_file(self, consumer):
 
@@ -165,6 +217,6 @@ class BlobRequestHandler(object):
                 self.currently_uploading = None
             self.file_sender = None
             if reason is not None and isinstance(reason, Failure):
-                log.info("Upload has failed. Reason: %s", reason.getErrorMessage())
+                log.warning("Upload has failed. Reason: %s", reason.getErrorMessage())
 
         return _send_file()

lbrynet/core/utils.py

@@ -4,6 +4,7 @@ import random
 import os
 import json
 import yaml
+import datetime
 
 from lbrynet.core.cryptoutils import get_lbry_hash_obj
 
@@ -76,4 +77,8 @@ def save_settings(path, settings):
     assert encoder is not False, "Unknown settings format .%s" % ext
     f = open(path, 'w')
     f.write(encoder(settings))
-    f.close()
+    f.close()
+
+
+def today():
+    return datetime.datetime.today()

lbrynet/cryptstream/client/CryptStreamDownloader.py

@@ -48,7 +48,7 @@ class CryptStreamDownloader(object):
 
         @param blob_manager: A BlobManager object
 
-        @param payment_rate_manager: A PaymentRateManager object
+        @param payment_rate_manager: A NegotiatedPaymentRateManager object
 
         @param wallet: An object which implements the IWallet interface
 

lbrynet/interfaces.py

@@ -647,4 +647,60 @@ class IWallet(Interface):
         @type amount: float
 
         @return: None
+        """
+
+
+class IBlobPriceModel(Interface):
+    """
+    A blob price model
+
+    Used by INegotiationStrategy classes
+    """
+
+    def calculate_price(self, blob):
+        """
+        Calculate the price for a blob
+
+        @param blob: a blob hash
+        @type blob: str
+
+        @return: blob price target
+        @type: Decimal
+        """
+
+
+class INegotiationStrategy(Interface):
+    """
+    Strategy to negotiate download payment rates
+    """
+
+    def make_offer(self, peer, blobs):
+        """
+        Make a rate offer for the given peer and blobs
+
+        @param peer: peer to make an offer to
+        @type: str
+
+        @param blobs: blob hashes to make an offer for
+        @type: list
+
+        @return: rate offer
+        @rtype: Offer
+        """
+
+    def respond_to_offer(self, offer, peer, blobs):
+        """
+        Respond to a rate offer given by a peer
+
+        @param offer: offer to reply to
+        @type: Offer
+
+        @param peer: peer to make an offer to
+        @type: str
+
+        @param blobs: blob hashes to make an offer for
+        @type: list
+
+        @return: accepted, rejected, or unset offer
+        @rtype: Offer
         """

lbrynet/lbryfile/client/EncryptedFileOptions.py

@@ -14,16 +14,16 @@ class EncryptedFileOptions(object):
         prm = payment_rate_manager
 
         def get_default_data_rate_description():
-            if prm.min_blob_data_payment_rate is None:
+            if prm.base.min_blob_data_payment_rate is None:
                 return "Application default (%s LBC/MB)" % str(prm.base.min_blob_data_payment_rate)
             else:
-                return "%f LBC/MB" % prm.min_blob_data_payment_rate
+                return "%f LBC/MB" % prm.base.min_blob_data_payment_rate
 
         rate_choices = []
-        rate_choices.append(DownloadOptionChoice(prm.min_blob_data_payment_rate,
+        rate_choices.append(DownloadOptionChoice(prm.base.min_blob_data_payment_rate,
                                                  "No change - %s" % get_default_data_rate_description(),
                                                  "No change - %s" % get_default_data_rate_description()))
-        if prm.min_blob_data_payment_rate is not None:
+        if prm.base.min_blob_data_payment_rate is not None:
             rate_choices.append(DownloadOptionChoice(None,
                                                      "Application default (%s LBC/MB)" % str(prm.base.min_blob_data_payment_rate),
                                                      "Application default (%s LBC/MB)" % str(prm.base.min_blob_data_payment_rate)))
@@ -36,7 +36,7 @@ class EncryptedFileOptions(object):
                 rate_choices,
                 "Rate which will be paid for data",
                 "data payment rate",
-                prm.min_blob_data_payment_rate,
+                prm.base.min_blob_data_payment_rate,
                 get_default_data_rate_description()
             ),
             DownloadOption(

lbrynet/lbryfilemanager/EncryptedFileDownloader.py

@@ -41,7 +41,7 @@ class ManagedEncryptedFileDownloader(EncryptedFileSaver):
         def _save_sd_hash(sd_hash):
             if len(sd_hash):
                 self.sd_hash = sd_hash[0]
-                d = self.wallet._get_claim_metadata_for_sd_hash(self.sd_hash)
+                d = self.wallet.get_claim_metadata_for_sd_hash(self.sd_hash)
             else:
                 d = defer.succeed(None)
 
@@ -122,13 +122,12 @@ class ManagedEncryptedFileDownloader(EncryptedFileSaver):
     def _start(self):
 
         d = EncryptedFileSaver._start(self)
-
-        d.addCallback(lambda _: self.stream_info_manager._get_sd_blob_hashes_for_stream(self.stream_hash))
+        d.addCallback(lambda _: self.stream_info_manager.get_sd_blob_hashes_for_stream(self.stream_hash))
 
         def _save_sd_hash(sd_hash):
             if len(sd_hash):
                 self.sd_hash = sd_hash[0]
-                d = self.wallet._get_claim_metadata_for_sd_hash(self.sd_hash)
+                d = self.wallet.get_claim_metadata_for_sd_hash(self.sd_hash)
             else:
                 d = defer.succeed(None)
 

lbrynet/lbryfilemanager/EncryptedFileManager.py

@@ -9,10 +9,10 @@ from twisted.enterprise import adbapi
 from twisted.internet import defer, task, reactor
 from twisted.python.failure import Failure
 
+from lbrynet.core.PaymentRateManager import NegotiatedPaymentRateManager
 from lbrynet.lbryfilemanager.EncryptedFileDownloader import ManagedEncryptedFileDownloader
 from lbrynet.lbryfilemanager.EncryptedFileDownloader import ManagedEncryptedFileDownloaderFactory
 from lbrynet.lbryfile.StreamDescriptor import EncryptedFileStreamType
-from lbrynet.core.PaymentRateManager import PaymentRateManager
 from lbrynet.cryptstream.client.CryptStreamDownloader import AlreadyStoppedError, CurrentlyStoppingError
 from lbrynet.core.sqlite_helpers import rerun_if_locked
 
@@ -74,7 +74,8 @@ class EncryptedFileManager(object):
     def _start_lbry_files(self):
 
         def set_options_and_restore(rowid, stream_hash, options):
-            payment_rate_manager = PaymentRateManager(self.session.base_payment_rate_manager)
+            payment_rate_manager = NegotiatedPaymentRateManager(self.session.base_payment_rate_manager,
+                                                                self.session.blob_tracker)
             d = self.start_lbry_file(rowid, stream_hash, payment_rate_manager,
                                      blob_data_rate=options)
             d.addCallback(lambda downloader: downloader.restore())

lbrynet/lbrylive/PaymentRateManager.py

@@ -19,11 +19,18 @@ class LiveStreamPaymentRateManager(object):
     def accept_rate_live_blob_info(self, peer, payment_rate):
         return payment_rate >= self.get_effective_min_live_blob_info_payment_rate()
 
-    def get_rate_blob_data(self, peer):
-        return self.get_effective_min_blob_data_payment_rate()
+    def get_rate_blob_data(self, peer, blobs):
+        response = self._payment_rate_manager.strategy.make_offer(peer, blobs)
+        return response.rate
 
-    def accept_rate_blob_data(self, peer, payment_rate):
-        return payment_rate >= self.get_effective_min_blob_data_payment_rate()
+    def accept_rate_blob_data(self, peer, blobs, offer):
+        response = self._payment_rate_manager.strategy.respond_to_offer(offer, peer, blobs)
+        return response.accepted
+
+    def reply_to_offer(self, peer, blobs, offer):
+        reply = self._payment_rate_manager.strategy.respond_to_offer(offer, peer, blobs)
+        self._payment_rate_manager.strategy.offer_accepted(peer, reply)
+        return reply
 
     def get_effective_min_blob_data_payment_rate(self):
         rate = self.min_blob_data_payment_rate
@@ -42,4 +49,4 @@ class LiveStreamPaymentRateManager(object):
         return rate
 
     def record_points_paid(self, amount):
-        self.points_paid += amount
+        self.points_paid += amount

lbrynet/lbrylive/client/LiveStreamDownloader.py

@@ -144,7 +144,7 @@ class FullLiveStreamDownloaderFactory(object):
 
     def make_downloader(self, metadata, options, payment_rate_manager):
         # TODO: check options for payment rate manager parameters
-        payment_rate_manager = LiveStreamPaymentRateManager(self.default_payment_rate_manager,
+        prm = LiveStreamPaymentRateManager(self.default_payment_rate_manager,
                                                             payment_rate_manager)
 
         def save_source_if_blob(stream_hash):
@@ -161,7 +161,7 @@ class FullLiveStreamDownloaderFactory(object):
         def create_downloader(stream_hash):
             stream_downloader = FullLiveStreamDownloader(stream_hash, self.peer_finder, self.rate_limiter,
                                                          self.blob_manager, self.stream_info_manager,
-                                                         payment_rate_manager, self.wallet, True)
+                                                         prm, self.wallet, True)
             # TODO: change upload_allowed=True above to something better
             d = stream_downloader.set_stream_info()
             d.addCallback(lambda _: stream_downloader)

lbrynet/lbrynet_console/Console.py

@@ -20,7 +20,6 @@ from lbrynet.conf import MIN_BLOB_DATA_PAYMENT_RATE, API_CONNECTION_STRING  # ,
 from lbrynet.core.utils import generate_id
 from lbrynet.core.StreamDescriptor import StreamDescriptorIdentifier
 from lbrynet.core.PaymentRateManager import PaymentRateManager
-from lbrynet.core.server.BlobAvailabilityHandler import BlobAvailabilityHandlerFactory
 from lbrynet.core.server.BlobRequestHandler import BlobRequestHandlerFactory
 from lbrynet.core.server.ServerProtocol import ServerProtocolFactory
 from lbrynet.core.PTCWallet import PTCWallet
@@ -363,19 +362,14 @@ class Console():
 
     def _setup_query_handlers(self):
         handlers = [
-            #CryptBlobInfoQueryHandlerFactory(self.lbry_file_metadata_manager, self.session.wallet,
-            #                                 self._server_payment_rate_manager),
-            BlobAvailabilityHandlerFactory(self.session.blob_manager),
-            #BlobRequestHandlerFactory(self.session.blob_manager, self.session.wallet,
-            #                          self._server_payment_rate_manager),
             self.session.wallet.get_wallet_info_query_handler_factory(),
         ]
 
         def get_blob_request_handler_factory(rate):
-            self.blob_request_payment_rate_manager = PaymentRateManager(
-                self.session.base_payment_rate_manager, rate
-            )
-            handlers.append(BlobRequestHandlerFactory(self.session.blob_manager, self.session.wallet,
+            self.blob_request_payment_rate_manager = PaymentRateManager(self.session.base_payment_rate_manager,
+                                                                        rate)
+            handlers.append(BlobRequestHandlerFactory(self.session.blob_manager,
+                                                      self.session.wallet,
                                                       self.blob_request_payment_rate_manager))
 
         d1 = self.settings.get_server_data_payment_rate()

lbrynet/lbrynet_console/ControlHandlers.py

@@ -644,7 +644,7 @@ class AddStream(CommandHandler):
         for option, option_value in zip(self.download_options, self.options_chosen):
             if option.short_description == "data payment rate":
                 if option_value == None:
-                    rate = self.payment_rate_manager.get_effective_min_blob_data_payment_rate()
+                    rate = 0.0
                 else:
                     rate = option_value
                 stream_size = None

lbrynet/lbrynet_daemon/Daemon.py

@@ -27,8 +27,6 @@ from txjsonrpc.web.jsonrpc import Handler
 from lbrynet import __version__ as lbrynet_version
 from lbryum.version import LBRYUM_VERSION as lbryum_version
 from lbrynet import analytics
-from lbrynet.core.PaymentRateManager import PaymentRateManager
-from lbrynet.core.server.BlobAvailabilityHandler import BlobAvailabilityHandlerFactory
 from lbrynet.core.server.BlobRequestHandler import BlobRequestHandlerFactory
 from lbrynet.core.server.ServerProtocol import ServerProtocolFactory
 from lbrynet.core.Error import UnknownNameError, InsufficientFundsError, InvalidNameError
@@ -546,7 +544,6 @@ class Daemon(jsonrpc.JSONRPC):
         d.addCallback(lambda _: add_lbry_file_to_sd_identifier(self.sd_identifier))
         d.addCallback(lambda _: self._setup_stream_identifier())
         d.addCallback(lambda _: self._setup_lbry_file_manager())
-        d.addCallback(lambda _: self._setup_lbry_file_opener())
         d.addCallback(lambda _: self._setup_query_handlers())
         d.addCallback(lambda _: self._setup_server())
         d.addCallback(lambda _: _log_starting_vals())
@@ -679,7 +676,6 @@ class Daemon(jsonrpc.JSONRPC):
         # TODO: this was blatantly copied from jsonrpc_start_lbry_file. Be DRY.
         def _start_file(f):
             d = self.lbry_file_manager.toggle_lbry_file_running(f)
-            d.addCallback(lambda _: self.lighthouse_client.announce_sd(f.sd_hash))
             return defer.succeed("Started LBRY file")
 
         def _get_and_start_file(name):
@@ -778,20 +774,13 @@ class Daemon(jsonrpc.JSONRPC):
 
     def _setup_query_handlers(self):
         handlers = [
-            # CryptBlobInfoQueryHandlerFactory(self.lbry_file_metadata_manager, self.session.wallet,
-            #                                 self._server_payment_rate_manager),
-            BlobAvailabilityHandlerFactory(self.session.blob_manager),
-            # BlobRequestHandlerFactory(self.session.blob_manager, self.session.wallet,
-            #                          self._server_payment_rate_manager),
+            BlobRequestHandlerFactory(self.session.blob_manager, self.session.wallet,
+                                      self.session.payment_rate_manager),
             self.session.wallet.get_wallet_info_query_handler_factory(),
         ]
 
         def get_blob_request_handler_factory(rate):
-            self.blob_request_payment_rate_manager = PaymentRateManager(
-                self.session.base_payment_rate_manager, rate
-            )
-            handlers.append(BlobRequestHandlerFactory(self.session.blob_manager, self.session.wallet,
-                                                      self.blob_request_payment_rate_manager))
+            self.blob_request_payment_rate_manager = self.session.payment_rate_manager
 
         d1 = self.settings.get_server_data_payment_rate()
         d1.addCallback(get_blob_request_handler_factory)
@@ -1104,14 +1093,6 @@ class Daemon(jsonrpc.JSONRPC):
         self.sd_identifier.add_stream_downloader_factory(EncryptedFileStreamType, file_opener_factory)
         return defer.succeed(None)
 
-    def _setup_lbry_file_opener(self):
-
-        downloader_factory = EncryptedFileOpenerFactory(self.session.peer_finder, self.session.rate_limiter,
-                                                   self.session.blob_manager, self.stream_info_manager,
-                                                   self.session.wallet)
-        self.sd_identifier.add_stream_downloader_factory(EncryptedFileStreamType, downloader_factory)
-        return defer.succeed(True)
-
     def _download_sd_blob(self, sd_hash, timeout=DEFAULT_SD_DOWNLOAD_TIMEOUT):
         def cb(result):
             if not r.called:
@@ -1123,7 +1104,7 @@ class Daemon(jsonrpc.JSONRPC):
 
         r = defer.Deferred(None)
         reactor.callLater(timeout, eb)
-        d = download_sd_blob(self.session, sd_hash, PaymentRateManager(self.session.base_payment_rate_manager))
+        d = download_sd_blob(self.session, sd_hash, self.session.payment_rate_manager)
         d.addCallback(BlobStreamDescriptorReader)
         d.addCallback(lambda blob: blob.get_info())
         d.addCallback(cb)
@@ -1906,13 +1887,8 @@ class Daemon(jsonrpc.JSONRPC):
         """
 
         name = p['name']
-        force = p.get('force', False)
 
-        if force:
-            d = self._get_est_cost(name)
-        else:
-            d = self._search(name)
-            d.addCallback(lambda r: [i['cost'] for i in r][0])
+        d = self._get_est_cost(name)
         d.addCallback(lambda r: self._render_response(r, OK_CODE))
         return d
 
@@ -2587,6 +2563,53 @@ class Daemon(jsonrpc.JSONRPC):
         d = self._render_response(SEARCH_SERVERS, OK_CODE)
         return d
 
+    def jsonrpc_get_mean_availability(self):
+        """
+        Get mean blob availability
+
+        Args:
+            None
+        Returns:
+            Mean peers for a blob
+        """
+
+        d = self._render_response(self.session.blob_tracker.last_mean_availability, OK_CODE)
+        return d
+
+    def jsonrpc_get_availability(self, p):
+        """
+        Get stream availability for a winning claim
+
+        Arg:
+            name (str): lbry uri
+
+        Returns:
+             peers per blob / total blobs
+        """
+
+        def _get_mean(blob_availabilities):
+            peer_counts = []
+            for blob_availability in blob_availabilities:
+                for blob, peers in blob_availability.iteritems():
+                    peer_counts.append(peers)
+            if peer_counts:
+                return round(1.0 * sum(peer_counts) / len(peer_counts), 2)
+            else:
+                return 0.0
+
+        name = p['name']
+
+        d = self._resolve_name(name, force_refresh=True)
+        d.addCallback(get_sd_hash)
+        d.addCallback(self._download_sd_blob)
+        d.addCallbacks(lambda descriptor: [blob.get('blob_hash') for blob in descriptor['blobs']],
+                       lambda _: [])
+        d.addCallback(self.session.blob_tracker.get_availability_for_blobs)
+        d.addCallback(_get_mean)
+        d.addCallback(lambda result: self._render_response(result, OK_CODE))
+
+        return d
+
 
 def get_lbrynet_version_from_github():
     """Return the latest released version from github."""

lbrynet/lbrynet_daemon/Downloader.py

@@ -9,7 +9,6 @@ from twisted.internet import defer
 from twisted.internet.task import LoopingCall
 
 from lbrynet.core.Error import InsufficientFundsError, KeyFeeAboveMaxAllowed
-from lbrynet.core.PaymentRateManager import PaymentRateManager
 from lbrynet.core.StreamDescriptor import download_sd_blob
 from lbrynet.metadata.Fee import FeeValidator
 from lbrynet.lbryfilemanager.EncryptedFileDownloader import ManagedEncryptedFileDownloaderFactory
@@ -48,11 +47,10 @@ class GetStream(object):
         self.description = None
         self.fee = None
         self.data_rate = data_rate
-        self.name = None
         self.file_name = file_name
         self.session = session
         self.exchange_rate_manager = exchange_rate_manager
-        self.payment_rate_manager = PaymentRateManager(self.session.base_payment_rate_manager)
+        self.payment_rate_manager = self.session.payment_rate_manager
         self.lbry_file_manager = lbry_file_manager
         self.sd_identifier = sd_identifier
         self.stream_hash = None
@@ -148,7 +146,7 @@ class GetStream(object):
         return self.finished
 
     def _start_download(self, downloader):
-        log.info('Starting download for %s', self.name)
+        log.info('Starting download for %s', self.resolved_name)
         self.downloader = downloader
         self.download_path = os.path.join(downloader.download_directory, downloader.file_name)
 

lbrynet/lbrynet_daemon/ExchangeRateManager.py

@@ -37,24 +37,34 @@ class MarketFeed(object):
         self._updater = LoopingCall(self._update_price)
 
     def _make_request(self):
-        r = requests.get(self.url, self.params)
-        return r.text
+        try:
+            r = requests.get(self.url, self.params)
+            return defer.succeed(r.text)
+        except Exception as err:
+            log.error(err)
+            return defer.fail(err)
 
     def _handle_response(self, response):
         return NotImplementedError
 
     def _subtract_fee(self, from_amount):
+        # increase amount to account for market fees
         return defer.succeed(from_amount / (1.0 - self.fee))
 
     def _save_price(self, price):
         log.debug("Saving price update %f for %s" % (price, self.market))
         self.rate = ExchangeRate(self.market, price, int(time.time()))
 
+    def _log_error(self, err):
+        log.error(err)
+        log.warning("There was a problem updating %s exchange rate information from %s", self.market, self.name)
+
     def _update_price(self):
-        d = defer.succeed(self._make_request())
+        d = self._make_request()
         d.addCallback(self._handle_response)
         d.addCallback(self._subtract_fee)
         d.addCallback(self._save_price)
+        d.addErrback(self._log_error)
 
     def start(self):
         if not self._updater.running:
@@ -94,7 +104,11 @@ class GoogleBTCFeed(MarketFeed):
         )
 
     def _make_request(self):
-        return googlefinance.getQuotes('CURRENCY:USDBTC')[0]
+        try:
+            r = googlefinance.getQuotes('CURRENCY:USDBTC')[0]
+            return defer.succeed(r)
+        except Exception as err:
+            return defer.fail(err)
 
     def _handle_response(self, response):
         return float(response['LastTradePrice'])

lbrynet/lbrynet_daemon/Publisher.py

@@ -9,7 +9,6 @@ from appdirs import user_data_dir
 from lbrynet.core.Error import InsufficientFundsError
 from lbrynet.lbryfilemanager.EncryptedFileCreator import create_lbry_file
 from lbrynet.lbryfile.StreamDescriptor import publish_sd_blob
-from lbrynet.core.PaymentRateManager import PaymentRateManager
 from lbrynet.metadata.Metadata import Metadata
 from lbrynet.lbryfilemanager.EncryptedFileDownloader import ManagedEncryptedFileDownloader
 from lbrynet import reflector
@@ -102,7 +101,7 @@ class Publisher(object):
 
     def add_to_lbry_files(self, stream_hash):
         self.stream_hash = stream_hash
-        prm = PaymentRateManager(self.session.base_payment_rate_manager)
+        prm = self.session.payment_rate_manager
         d = self.lbry_file_manager.add_lbry_file(stream_hash, prm)
         d.addCallback(self.set_lbry_file)
         return d

tests/functional/test_misc.py

@@ -13,13 +13,10 @@ from Crypto.Hash import MD5
 from lbrynet.conf import MIN_BLOB_DATA_PAYMENT_RATE
 from lbrynet.conf import MIN_BLOB_INFO_PAYMENT_RATE
 from lbrynet.lbrylive.LiveStreamCreator import FileLiveStreamCreator
-from lbrynet.lbrylive.PaymentRateManager import BaseLiveStreamPaymentRateManager
-from lbrynet.lbrylive.PaymentRateManager import LiveStreamPaymentRateManager
 from lbrynet.lbrylive.LiveStreamMetadataManager import DBLiveStreamMetadataManager
 from lbrynet.lbrylive.LiveStreamMetadataManager import TempLiveStreamMetadataManager
 from lbrynet.lbryfile.EncryptedFileMetadataManager import TempEncryptedFileMetadataManager, DBEncryptedFileMetadataManager
 from lbrynet.lbryfilemanager.EncryptedFileManager import EncryptedFileManager
-from lbrynet.core.PaymentRateManager import PaymentRateManager
 from lbrynet.core.PTCWallet import PointTraderKeyQueryHandlerFactory, PointTraderKeyExchanger
 from lbrynet.core.Session import Session
 from lbrynet.core.client.StandaloneBlobDownloader import StandaloneBlobDownloader
@@ -29,22 +26,19 @@ from lbrynet.core.StreamDescriptor import download_sd_blob
 from lbrynet.lbryfilemanager.EncryptedFileCreator import create_lbry_file
 from lbrynet.lbryfile.client.EncryptedFileOptions import add_lbry_file_to_sd_identifier
 from lbrynet.lbryfile.StreamDescriptor import get_sd_info
-from twisted.internet import defer, threads, task, error
+from twisted.internet import defer, threads, task
 from twisted.trial.unittest import TestCase
 from twisted.python.failure import Failure
 import os
+from lbrynet.dht.node import Node
+from tests.mocks import DummyBlobAvailabilityTracker
 from lbrynet.core.PeerManager import PeerManager
 from lbrynet.core.RateLimiter import DummyRateLimiter, RateLimiter
-from lbrynet.core.server.BlobAvailabilityHandler import BlobAvailabilityHandlerFactory
 from lbrynet.core.server.BlobRequestHandler import BlobRequestHandlerFactory
 from lbrynet.core.server.ServerProtocol import ServerProtocolFactory
 from lbrynet.lbrylive.server.LiveBlobInfoQueryHandler import CryptBlobInfoQueryHandlerFactory
 from lbrynet.lbrylive.client.LiveStreamOptions import add_live_stream_to_sd_identifier
 from lbrynet.lbrylive.client.LiveStreamDownloader import add_full_live_stream_downloader_to_sd_identifier
-from lbrynet.core.BlobManager import TempBlobManager
-from lbrynet.reflector.client.client import EncryptedFileReflectorClientFactory
-from lbrynet.reflector.server.server import ReflectorServerFactory
-from lbrynet.lbryfile.StreamDescriptor import publish_sd_blob
 
 
 log_format = "%(funcName)s(): %(message)s"
@@ -106,6 +100,9 @@ class FakeWallet(object):
     def set_public_key_for_peer(self, peer, public_key):
         pass
 
+    def get_claim_metadata_for_sd_hash(self, sd_hash):
+        return "fakeuri", "faketxid"
+
 
 class FakePeerFinder(object):
     def __init__(self, start_port, peer_manager, num_peers):
@@ -212,16 +209,12 @@ test_create_stream_sd_file = {
 
 
 def start_lbry_uploader(sd_hash_queue, kill_event, dead_event, file_size, ul_rate_limit=None):
-
-    sys.modules = sys.modules.copy()
-
-    del sys.modules['twisted.internet.reactor']
-
-    import twisted.internet
-
-    twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
-
-    sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
+    if sys.platform.startswith("linux"):
+        sys.modules = sys.modules.copy()
+        del sys.modules['twisted.internet.reactor']
+        import twisted.internet
+        twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
+        sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
 
     from twisted.internet import reactor
 
@@ -239,12 +232,14 @@ def start_lbry_uploader(sd_hash_queue, kill_event, dead_event, file_size, ul_rat
     rate_limiter = RateLimiter()
     sd_identifier = StreamDescriptorIdentifier()
 
+
     db_dir = "server"
     os.mkdir(db_dir)
 
     session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                           peer_finder=peer_finder, hash_announcer=hash_announcer, peer_port=5553,
-                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker,
+                          dht_node_class=Node)
 
     stream_info_manager = TempEncryptedFileMetadataManager()
 
@@ -274,9 +269,8 @@ def start_lbry_uploader(sd_hash_queue, kill_event, dead_event, file_size, ul_rat
         server_port = None
 
         query_handler_factories = {
-            BlobAvailabilityHandlerFactory(session.blob_manager): True,
             BlobRequestHandlerFactory(session.blob_manager, session.wallet,
-                                      PaymentRateManager(session.base_payment_rate_manager)): True,
+                                      session.payment_rate_manager): True,
             session.wallet.get_wallet_info_query_handler_factory(): True,
         }
 
@@ -322,20 +316,18 @@ def start_lbry_uploader(sd_hash_queue, kill_event, dead_event, file_size, ul_rat
         sd_hash_queue.put(sd_hash)
 
     reactor.callLater(1, start_all)
-    reactor.run()
+    if not reactor.running:
+        reactor.run()
 
 
 def start_lbry_reuploader(sd_hash, kill_event, dead_event, ready_event, n, ul_rate_limit=None):
 
-    sys.modules = sys.modules.copy()
-
-    del sys.modules['twisted.internet.reactor']
-
-    import twisted.internet
-
-    twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
-
-    sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
+    if sys.platform.startswith("linux"):
+        sys.modules = sys.modules.copy()
+        del sys.modules['twisted.internet.reactor']
+        import twisted.internet
+        twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
+        sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
 
     from twisted.internet import reactor
 
@@ -362,7 +354,7 @@ def start_lbry_reuploader(sd_hash, kill_event, dead_event, ready_event, n, ul_ra
     session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd" + str(n),
                           peer_finder=peer_finder, hash_announcer=hash_announcer,
                           blob_dir=None, peer_port=peer_port,
-                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
     stream_info_manager = TempEncryptedFileMetadataManager()
 
@@ -379,7 +371,7 @@ def start_lbry_reuploader(sd_hash, kill_event, dead_event, ready_event, n, ul_ra
         return factories[0].make_downloader(metadata, chosen_options, prm)
 
     def download_file():
-        prm = PaymentRateManager(session.base_payment_rate_manager)
+        prm = session.payment_rate_manager
         d = download_sd_blob(session, sd_hash, prm)
         d.addCallback(sd_identifier.get_metadata_for_sd_blob)
         d.addCallback(make_downloader, prm)
@@ -402,9 +394,8 @@ def start_lbry_reuploader(sd_hash, kill_event, dead_event, ready_event, n, ul_ra
         server_port = None
 
         query_handler_factories = {
-            BlobAvailabilityHandlerFactory(session.blob_manager): True,
             BlobRequestHandlerFactory(session.blob_manager, session.wallet,
-                                      PaymentRateManager(session.base_payment_rate_manager)): True,
+                                      session.payment_rate_manager): True,
             session.wallet.get_wallet_info_query_handler_factory(): True,
         }
 
@@ -438,21 +429,18 @@ def start_lbry_reuploader(sd_hash, kill_event, dead_event, ready_event, n, ul_ra
 
     d = task.deferLater(reactor, 1.0, start_transfer)
     d.addCallback(lambda _: start_server())
-
-    reactor.run()
+    if not reactor.running:
+        reactor.run()
 
 
 def start_live_server(sd_hash_queue, kill_event, dead_event):
 
-    sys.modules = sys.modules.copy()
-
-    del sys.modules['twisted.internet.reactor']
-
-    import twisted.internet
-
-    twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
-
-    sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
+    if sys.platform.startswith("linux"):
+        sys.modules = sys.modules.copy()
+        del sys.modules['twisted.internet.reactor']
+        import twisted.internet
+        twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
+        sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
 
     from twisted.internet import reactor
 
@@ -470,18 +458,14 @@ def start_live_server(sd_hash_queue, kill_event, dead_event):
     rate_limiter = DummyRateLimiter()
     sd_identifier = StreamDescriptorIdentifier()
 
+
     db_dir = "server"
     os.mkdir(db_dir)
 
     session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
-                          peer_finder=peer_finder, hash_announcer=hash_announcer, peer_port=5553,
-                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
-
-    base_payment_rate_manager = BaseLiveStreamPaymentRateManager(MIN_BLOB_INFO_PAYMENT_RATE)
-    data_payment_rate_manager = PaymentRateManager(session.base_payment_rate_manager)
-    payment_rate_manager = LiveStreamPaymentRateManager(base_payment_rate_manager,
-                                                        data_payment_rate_manager)
-
+                      peer_finder=peer_finder, hash_announcer=hash_announcer, peer_port=5553,
+                      use_upnp=False, rate_limiter=rate_limiter, wallet=wallet,
+                      blob_tracker_class=DummyBlobAvailabilityTracker)
     stream_info_manager = DBLiveStreamMetadataManager(session.db_dir, hash_announcer)
 
     logging.debug("Created the session")
@@ -492,10 +476,9 @@ def start_live_server(sd_hash_queue, kill_event, dead_event):
         logging.debug("Starting the server protocol")
         query_handler_factories = {
             CryptBlobInfoQueryHandlerFactory(stream_info_manager, session.wallet,
-                                             payment_rate_manager): True,
-            BlobAvailabilityHandlerFactory(session.blob_manager): True,
+                                             session.payment_rate_manager): True,
             BlobRequestHandlerFactory(session.blob_manager, session.wallet,
-                                      payment_rate_manager): True,
+                                      session.payment_rate_manager): True,
             session.wallet.get_wallet_info_query_handler_factory(): True,
         }
 
@@ -563,12 +546,9 @@ def start_live_server(sd_hash_queue, kill_event, dead_event):
         return d
 
     def enable_live_stream():
-        base_live_stream_payment_rate_manager = BaseLiveStreamPaymentRateManager(
-            MIN_BLOB_INFO_PAYMENT_RATE
-        )
-        add_live_stream_to_sd_identifier(sd_identifier, base_live_stream_payment_rate_manager)
+        add_live_stream_to_sd_identifier(sd_identifier, session.base_payment_rate_manager)
         add_full_live_stream_downloader_to_sd_identifier(session, stream_info_manager, sd_identifier,
-                                                         base_live_stream_payment_rate_manager)
+                                                         session.base_payment_rate_manager)
 
     def run_server():
         d = session.setup()
@@ -581,20 +561,18 @@ def start_live_server(sd_hash_queue, kill_event, dead_event):
         return d
 
     reactor.callLater(1, run_server)
-    reactor.run()
+    if not reactor.running:
+        reactor.run()
 
 
 def start_blob_uploader(blob_hash_queue, kill_event, dead_event, slow):
 
-    sys.modules = sys.modules.copy()
-
-    del sys.modules['twisted.internet.reactor']
-
-    import twisted.internet
-
-    twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
-
-    sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
+    if sys.platform.startswith("linux"):
+        sys.modules = sys.modules.copy()
+        del sys.modules['twisted.internet.reactor']
+        import twisted.internet
+        twisted.internet.reactor = twisted.internet.epollreactor.EPollReactor()
+        sys.modules['twisted.internet.reactor'] = twisted.internet.reactor
 
     from twisted.internet import reactor
 
@@ -621,7 +599,7 @@ def start_blob_uploader(blob_hash_queue, kill_event, dead_event, slow):
     session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="efgh",
                           peer_finder=peer_finder, hash_announcer=hash_announcer,
                           blob_dir=blob_dir, peer_port=peer_port,
-                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                          use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
     if slow is True:
         session.rate_limiter.set_ul_limit(2**11)
@@ -643,9 +621,7 @@ def start_blob_uploader(blob_hash_queue, kill_event, dead_event, slow):
         server_port = None
 
         query_handler_factories = {
-            BlobAvailabilityHandlerFactory(session.blob_manager): True,
-            BlobRequestHandlerFactory(session.blob_manager, session.wallet,
-                                      PaymentRateManager(session.base_payment_rate_manager)): True,
+            BlobRequestHandlerFactory(session.blob_manager, session.wallet, session.payment_rate_manager): True,
             session.wallet.get_wallet_info_query_handler_factory(): True,
         }
 
@@ -686,7 +662,8 @@ def start_blob_uploader(blob_hash_queue, kill_event, dead_event, slow):
         logging.debug("blob hash has been added to the queue")
 
     reactor.callLater(1, start_all)
-    reactor.run()
+    if not reactor.running:
+        reactor.run()
 
 
 class TestTransfer(TestCase):
@@ -768,7 +745,6 @@ class TestTransfer(TestCase):
 
         return d
 
-    @unittest.skip("Sadly skipping failing test instead of fixing it")
     def test_lbry_transfer(self):
         sd_hash_queue = Queue()
         kill_event = Event()
@@ -786,6 +762,7 @@ class TestTransfer(TestCase):
         rate_limiter = DummyRateLimiter()
         sd_identifier = StreamDescriptorIdentifier()
 
+
         db_dir = "client"
         blob_dir = os.path.join(db_dir, "blobfiles")
         os.mkdir(db_dir)
@@ -794,7 +771,8 @@ class TestTransfer(TestCase):
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer,
                                    blob_dir=blob_dir, peer_port=5553,
-                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker,
+                                   dht_node_class=Node)
 
         self.stream_info_manager = TempEncryptedFileMetadataManager()
 
@@ -808,7 +786,7 @@ class TestTransfer(TestCase):
             return factories[0].make_downloader(metadata, chosen_options, prm)
 
         def download_file(sd_hash):
-            prm = PaymentRateManager(self.session.base_payment_rate_manager)
+            prm = self.session.payment_rate_manager
             d = download_sd_blob(self.session, sd_hash, prm)
             d.addCallback(sd_identifier.get_metadata_for_sd_blob)
             d.addCallback(make_downloader, prm)
@@ -855,7 +833,7 @@ class TestTransfer(TestCase):
 
         return d
 
-    @require_system('Linux')
+    @unittest.skip("Sadly skipping failing test instead of fixing it")
     def test_live_transfer(self):
 
         sd_hash_queue = Queue()
@@ -878,7 +856,8 @@ class TestTransfer(TestCase):
 
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer, blob_dir=None,
-                                   peer_port=5553, use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                                   peer_port=5553, use_upnp=False, rate_limiter=rate_limiter, wallet=wallet,
+                                   blob_tracker_class=DummyBlobAvailabilityTracker, dht_node_class=Node)
 
         self.stream_info_manager = TempLiveStreamMetadataManager(hash_announcer)
 
@@ -893,12 +872,10 @@ class TestTransfer(TestCase):
 
         def start_lbry_file(lbry_file):
             lbry_file = lbry_file
-            logging.debug("Calling lbry_file.start()")
             return lbry_file.start()
 
         def download_stream(sd_blob_hash):
-            logging.debug("Downloaded the sd blob. Reading it now")
-            prm = PaymentRateManager(self.session.base_payment_rate_manager)
+            prm = self.session.payment_rate_manager
             d = download_sd_blob(self.session, sd_blob_hash, prm)
             d.addCallback(sd_identifier.get_metadata_for_sd_blob)
             d.addCallback(create_downloader, prm)
@@ -907,20 +884,17 @@ class TestTransfer(TestCase):
 
         def do_download(sd_blob_hash):
             logging.debug("Starting the download")
+
             d = self.session.setup()
             d.addCallback(lambda _: enable_live_stream())
             d.addCallback(lambda _: download_stream(sd_blob_hash))
             return d
 
         def enable_live_stream():
-            base_live_stream_payment_rate_manager = BaseLiveStreamPaymentRateManager(
-                MIN_BLOB_INFO_PAYMENT_RATE
-            )
-            add_live_stream_to_sd_identifier(sd_identifier,
-                                             base_live_stream_payment_rate_manager)
+            add_live_stream_to_sd_identifier(sd_identifier, self.session.payment_rate_manager)
             add_full_live_stream_downloader_to_sd_identifier(self.session, self.stream_info_manager,
                                                              sd_identifier,
-                                                             base_live_stream_payment_rate_manager)
+                                                             self.session.payment_rate_manager)
 
         d.addCallback(do_download)
 
@@ -951,7 +925,6 @@ class TestTransfer(TestCase):
         d.addBoth(stop)
         return d
 
-    @require_system('Linux')
     def test_last_blob_retrieval(self):
 
         kill_event = Event()
@@ -976,6 +949,7 @@ class TestTransfer(TestCase):
         hash_announcer = FakeAnnouncer()
         rate_limiter = DummyRateLimiter()
 
+
         db_dir = "client"
         blob_dir = os.path.join(db_dir, "blobfiles")
         os.mkdir(db_dir)
@@ -984,7 +958,7 @@ class TestTransfer(TestCase):
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer,
                                    blob_dir=blob_dir, peer_port=5553,
-                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
         d1 = self.wait_for_hash_from_queue(blob_hash_queue_1)
         d2 = self.wait_for_hash_from_queue(blob_hash_queue_2)
@@ -997,7 +971,7 @@ class TestTransfer(TestCase):
         d.addCallback(get_blob_hash)
 
         def download_blob(blob_hash):
-            prm = PaymentRateManager(self.session.base_payment_rate_manager)
+            prm = self.session.payment_rate_manager
             downloader = StandaloneBlobDownloader(blob_hash, self.session.blob_manager, peer_finder,
                                                   rate_limiter, prm, wallet)
             d = downloader.download()
@@ -1036,7 +1010,6 @@ class TestTransfer(TestCase):
 
         return d
 
-    @unittest.skip("Sadly skipping failing test instead of fixing it")
     def test_double_download(self):
         sd_hash_queue = Queue()
         kill_event = Event()
@@ -1054,6 +1027,7 @@ class TestTransfer(TestCase):
         rate_limiter = DummyRateLimiter()
         sd_identifier = StreamDescriptorIdentifier()
 
+
         downloaders = []
 
         db_dir = "client"
@@ -1064,10 +1038,9 @@ class TestTransfer(TestCase):
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer,
                                    blob_dir=blob_dir, peer_port=5553, use_upnp=False,
-                                   rate_limiter=rate_limiter, wallet=wallet)
+                                   rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
         self.stream_info_manager = DBEncryptedFileMetadataManager(self.session.db_dir)
-
         self.lbry_file_manager = EncryptedFileManager(self.session, self.stream_info_manager, sd_identifier)
 
         def make_downloader(metadata, prm):
@@ -1082,7 +1055,7 @@ class TestTransfer(TestCase):
             return downloader
 
         def download_file(sd_hash):
-            prm = PaymentRateManager(self.session.base_payment_rate_manager)
+            prm = self.session.payment_rate_manager
             d = download_sd_blob(self.session, sd_hash, prm)
             d.addCallback(sd_identifier.get_metadata_for_sd_blob)
             d.addCallback(make_downloader, prm)
@@ -1115,7 +1088,6 @@ class TestTransfer(TestCase):
             return d
 
         def start_transfer(sd_hash):
-
             logging.debug("Starting the transfer")
 
             d = self.session.setup()
@@ -1172,6 +1144,7 @@ class TestTransfer(TestCase):
         rate_limiter = DummyRateLimiter()
         sd_identifier = StreamDescriptorIdentifier()
 
+
         db_dir = "client"
         blob_dir = os.path.join(db_dir, "blobfiles")
         os.mkdir(db_dir)
@@ -1180,7 +1153,7 @@ class TestTransfer(TestCase):
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer,
                                    blob_dir=None, peer_port=5553,
-                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
         self.stream_info_manager = TempEncryptedFileMetadataManager()
 
@@ -1205,7 +1178,7 @@ class TestTransfer(TestCase):
             return factories[0].make_downloader(metadata, chosen_options, prm)
 
         def download_file(sd_hash):
-            prm = PaymentRateManager(self.session.base_payment_rate_manager)
+            prm = self.session.payment_rate_manager
             d = download_sd_blob(self.session, sd_hash, prm)
             d.addCallback(sd_identifier.get_metadata_for_sd_blob)
             d.addCallback(make_downloader, prm)
@@ -1290,6 +1263,7 @@ class TestStreamify(TestCase):
         rate_limiter = DummyRateLimiter()
         sd_identifier = StreamDescriptorIdentifier()
 
+
         db_dir = "client"
         blob_dir = os.path.join(db_dir, "blobfiles")
         os.mkdir(db_dir)
@@ -1298,7 +1272,7 @@ class TestStreamify(TestCase):
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer,
                                    blob_dir=blob_dir, peer_port=5553,
-                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
         self.stream_info_manager = TempEncryptedFileMetadataManager()
 
@@ -1342,6 +1316,7 @@ class TestStreamify(TestCase):
         rate_limiter = DummyRateLimiter()
         sd_identifier = StreamDescriptorIdentifier()
 
+
         db_dir = "client"
         blob_dir = os.path.join(db_dir, "blobfiles")
         os.mkdir(db_dir)
@@ -1350,7 +1325,7 @@ class TestStreamify(TestCase):
         self.session = Session(MIN_BLOB_DATA_PAYMENT_RATE, db_dir=db_dir, lbryid="abcd",
                                    peer_finder=peer_finder, hash_announcer=hash_announcer,
                                    blob_dir=blob_dir, peer_port=5553,
-                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet)
+                                   use_upnp=False, rate_limiter=rate_limiter, wallet=wallet, blob_tracker_class=DummyBlobAvailabilityTracker)
 
         self.stream_info_manager = DBEncryptedFileMetadataManager(self.session.db_dir)
 
@@ -1363,7 +1338,7 @@ class TestStreamify(TestCase):
 
         def combine_stream(stream_hash):
 
-            prm = PaymentRateManager(self.session.base_payment_rate_manager)
+            prm = self.session.payment_rate_manager
             d = self.lbry_file_manager.add_lbry_file(stream_hash, prm)
             d.addCallback(start_lbry_file)
 

tests/functional/test_reflector.py

@@ -12,6 +12,7 @@ from lbrynet.core import PeerManager
 from lbrynet.core import RateLimiter
 from lbrynet.core import Session
 from lbrynet.core import StreamDescriptor
+from lbrynet.dht.node import Node
 from lbrynet.lbryfile import EncryptedFileMetadataManager
 from lbrynet.lbryfile.client import EncryptedFileOptions
 from lbrynet.lbryfilemanager import EncryptedFileCreator
@@ -91,7 +92,9 @@ class TestReflector(unittest.TestCase):
             peer_port=5553,
             use_upnp=False,
             rate_limiter=rate_limiter,
-            wallet=wallet
+            wallet=wallet,
+            blob_tracker_class=mocks.DummyBlobAvailabilityTracker,
+            dht_node_class=Node
         )
 
         self.stream_info_manager = EncryptedFileMetadataManager.TempEncryptedFileMetadataManager()

tests/mocks.py

@@ -1,9 +1,11 @@
 import io
 
 from Crypto.PublicKey import RSA
+from decimal import Decimal
 from twisted.internet import defer, threads, task, error
 
 from lbrynet.core import PTCWallet
+from lbrynet.core.BlobAvailability import BlobAvailabilityTracker
 
 
 class Node(object):
@@ -134,6 +136,43 @@ class GenFile(io.RawIOBase):
         return output
 
 
+class DummyBlobAvailabilityTracker(BlobAvailabilityTracker):
+    """
+    Class to track peer counts for known blobs, and to discover new popular blobs
+
+    Attributes:
+        availability (dict): dictionary of peers for known blobs
+    """
+
+    def __init__(self, blob_manager=None, peer_finder=None, dht_node=None):
+        self.availability = {
+            '91dc64cf1ff42e20d627b033ad5e4c3a4a96856ed8a6e3fb4cd5fa1cfba4bf72eefd325f579db92f45f4355550ace8e7': ['1.2.3.4'],
+            'b2e48bb4c88cf46b76adf0d47a72389fae0cd1f19ed27dc509138c99509a25423a4cef788d571dca7988e1dca69e6fa0': ['1.2.3.4', '1.2.3.4'],
+            '6af95cd062b4a179576997ef1054c9d2120f8592eea045e9667bea411d520262cd5a47b137eabb7a7871f5f8a79c92dd': ['1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            '6d8017aba362e5c5d0046625a039513419810a0397d728318c328a5cc5d96efb589fbca0728e54fe5adbf87e9545ee07': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            '5a450b416275da4bdff604ee7b58eaedc7913c5005b7184fc3bc5ef0b1add00613587f54217c91097fc039ed9eace9dd': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            'd7c82e6cac093b3f16107d2ae2b2c75424f1fcad2c7fbdbe66e4a13c0b6bd27b67b3a29c403b82279ab0f7c1c48d6787': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            '9dbda74a472a2e5861a5d18197aeba0f5de67c67e401124c243d2f0f41edf01d7a26aeb0b5fc9bf47f6361e0f0968e2c': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            '8c70d5e2f5c3a6085006198e5192d157a125d92e7378794472007a61947992768926513fc10924785bdb1761df3c37e6': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            'f99d24cd50d4bfd77c2598bfbeeb8415bf0feef21200bdf0b8fbbde7751a77b7a2c68e09c25465a2f40fba8eecb0b4e0': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+            'c84aa1fd8f5009f7c4e71e444e40d95610abc1480834f835eefb267287aeb10025880a3ce22580db8c6d92efb5bc0c9c': ['1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4', '1.2.3.4'],
+        }
+        self.last_mean_availability = Decimal(0.0)
+        self._blob_manager = None
+        self._peer_finder = PeerFinder(11223, 11224, 2)
+        self._dht_node = None
+        self._check_popular = None
+        self._check_mine = None
+        self._get_mean_peers()
+
+    def start(self):
+        pass
+
+    def stop(self):
+        pass
+
+
+
 create_stream_sd_file = {
     'stream_name': '746573745f66696c65',
     'blobs': [

tests/unit/core/server/test_BlobRequestHandler.py

@@ -1,24 +1,24 @@
 import StringIO
 
 import mock
-from twisted.internet import defer, protocol
+from twisted.internet import defer
 from twisted.test import proto_helpers
 from twisted.trial import unittest
 
 from lbrynet.core import Peer
 from lbrynet.core.server import BlobRequestHandler
+from lbrynet.core.PaymentRateManager import NegotiatedPaymentRateManager, BasePaymentRateManager
+from tests.mocks import DummyBlobAvailabilityTracker
 
 
 class TestBlobRequestHandlerQueries(unittest.TestCase):
     def setUp(self):
         self.blob_manager = mock.Mock()
-        self.payment_rate_manager = mock.Mock()
-        self.handler = BlobRequestHandler.BlobRequestHandler(
-            self.blob_manager, None, self.payment_rate_manager)
+        self.payment_rate_manager = NegotiatedPaymentRateManager(BasePaymentRateManager(0.001), DummyBlobAvailabilityTracker())
+        self.handler = BlobRequestHandler.BlobRequestHandler(self.blob_manager, None, self.payment_rate_manager)
 
     def test_empty_response_when_empty_query(self):
-        self.assertEqual(
-            {}, self.successResultOf(self.handler.handle_queries({})))
+        self.assertEqual({}, self.successResultOf(self.handler.handle_queries({})))
 
     def test_error_set_when_rate_is_missing(self):
         query = {'requested_blob': 'blob'}
@@ -27,9 +27,8 @@ class TestBlobRequestHandlerQueries(unittest.TestCase):
         self.assertEqual(response, self.successResultOf(deferred))
 
     def test_error_set_when_rate_too_low(self):
-        self.payment_rate_manager.accept_rate_blob_data.return_value = False
         query = {
-            'blob_data_payment_rate': 'way_too_low',
+            'blob_data_payment_rate': '-1.0',
             'requested_blob': 'blob'
         }
         deferred = self.handler.handle_queries(query)
@@ -40,9 +39,8 @@ class TestBlobRequestHandlerQueries(unittest.TestCase):
         self.assertEqual(response, self.successResultOf(deferred))
 
     def test_response_when_rate_too_low(self):
-        self.payment_rate_manager.accept_rate_blob_data.return_value = False
         query = {
-            'blob_data_payment_rate': 'way_too_low',
+            'blob_data_payment_rate': '-1.0',
         }
         deferred = self.handler.handle_queries(query)
         response = {
@@ -51,12 +49,11 @@ class TestBlobRequestHandlerQueries(unittest.TestCase):
         self.assertEqual(response, self.successResultOf(deferred))
 
     def test_blob_unavailable_when_blob_not_validated(self):
-        self.payment_rate_manager.accept_rate_blob_data.return_value = True
         blob = mock.Mock()
         blob.is_validated.return_value = False
         self.blob_manager.get_blob.return_value = defer.succeed(blob)
         query = {
-            'blob_data_payment_rate': 'rate',
+            'blob_data_payment_rate': 1.0,
             'requested_blob': 'blob'
         }
         deferred = self.handler.handle_queries(query)
@@ -67,13 +64,12 @@ class TestBlobRequestHandlerQueries(unittest.TestCase):
         self.assertEqual(response, self.successResultOf(deferred))
 
     def test_blob_unavailable_when_blob_cannot_be_opened(self):
-        self.payment_rate_manager.accept_rate_blob_data.return_value = True
         blob = mock.Mock()
         blob.is_validated.return_value = True
         blob.open_for_reading.return_value = None
         self.blob_manager.get_blob.return_value = defer.succeed(blob)
         query = {
-            'blob_data_payment_rate': 'rate',
+            'blob_data_payment_rate': 0.0,
             'requested_blob': 'blob'
         }
         deferred = self.handler.handle_queries(query)
@@ -84,15 +80,17 @@ class TestBlobRequestHandlerQueries(unittest.TestCase):
         self.assertEqual(response, self.successResultOf(deferred))
 
     def test_blob_details_are_set_when_all_conditions_are_met(self):
-        self.payment_rate_manager.accept_rate_blob_data.return_value = True
         blob = mock.Mock()
         blob.is_validated.return_value = True
         blob.open_for_reading.return_value = True
         blob.blob_hash = 'DEADBEEF'
         blob.length = 42
+        peer = mock.Mock()
+        peer.host = "1.2.3.4"
+        self.handler.peer = peer
         self.blob_manager.get_blob.return_value = defer.succeed(blob)
         query = {
-            'blob_data_payment_rate': 'rate',
+            'blob_data_payment_rate': 1.0,
             'requested_blob': 'blob'
         }
         deferred = self.handler.handle_queries(query)
@@ -103,7 +101,8 @@ class TestBlobRequestHandlerQueries(unittest.TestCase):
                 'length': 42
             }
         }
-        self.assertEqual(response, self.successResultOf(deferred))
+        result = self.successResultOf(deferred)
+        self.assertEqual(response, result)
 
 
 class TestBlobRequestHandlerSender(unittest.TestCase):

tests/unit/core/test_Strategy.py

@@ -0,0 +1,125 @@
+import itertools
+from twisted.trial import unittest
+import random
+import mock
+from lbrynet.core.PaymentRateManager import NegotiatedPaymentRateManager, BasePaymentRateManager
+from lbrynet.core.Strategy import BasicAvailabilityWeightedStrategy
+from lbrynet.core.Offer import Offer
+from tests.mocks import DummyBlobAvailabilityTracker
+
+MAX_NEGOTIATION_TURNS = 10
+random.seed(12345)
+
+
+def get_random_sample(list_to_sample):
+    result = list_to_sample[random.randint(1, len(list_to_sample)):random.randint(1, len(list_to_sample))]
+    if not result:
+        return get_random_sample(list_to_sample)
+    return result
+
+
+def calculate_negotation_turns(client_base, host_base, host_is_generous=True, client_is_generous=True):
+    blobs = [
+        'b2e48bb4c88cf46b76adf0d47a72389fae0cd1f19ed27dc509138c99509a25423a4cef788d571dca7988e1dca69e6fa0',
+        'd7c82e6cac093b3f16107d2ae2b2c75424f1fcad2c7fbdbe66e4a13c0b6bd27b67b3a29c403b82279ab0f7c1c48d6787',
+        '5a450b416275da4bdff604ee7b58eaedc7913c5005b7184fc3bc5ef0b1add00613587f54217c91097fc039ed9eace9dd',
+        'f99d24cd50d4bfd77c2598bfbeeb8415bf0feef21200bdf0b8fbbde7751a77b7a2c68e09c25465a2f40fba8eecb0b4e0',
+        '9dbda74a472a2e5861a5d18197aeba0f5de67c67e401124c243d2f0f41edf01d7a26aeb0b5fc9bf47f6361e0f0968e2c',
+        '91dc64cf1ff42e20d627b033ad5e4c3a4a96856ed8a6e3fb4cd5fa1cfba4bf72eefd325f579db92f45f4355550ace8e7',
+        '6d8017aba362e5c5d0046625a039513419810a0397d728318c328a5cc5d96efb589fbca0728e54fe5adbf87e9545ee07',
+        '6af95cd062b4a179576997ef1054c9d2120f8592eea045e9667bea411d520262cd5a47b137eabb7a7871f5f8a79c92dd',
+        '8c70d5e2f5c3a6085006198e5192d157a125d92e7378794472007a61947992768926513fc10924785bdb1761df3c37e6',
+        'c84aa1fd8f5009f7c4e71e444e40d95610abc1480834f835eefb267287aeb10025880a3ce22580db8c6d92efb5bc0c9c'
+    ]
+
+    host = mock.Mock()
+    host.host = "1.2.3.4"
+    client = mock.Mock()
+    client.host = "1.2.3.5"
+
+    client_base_prm = BasePaymentRateManager(client_base)
+    client_prm = NegotiatedPaymentRateManager(client_base_prm,
+                                              DummyBlobAvailabilityTracker(),
+                                              generous=client_is_generous)
+    host_base_prm = BasePaymentRateManager(host_base)
+    host_prm = NegotiatedPaymentRateManager(host_base_prm,
+                                            DummyBlobAvailabilityTracker(),
+                                            generous=host_is_generous)
+    blobs_to_query = get_random_sample(blobs)
+    accepted = False
+    turns = 0
+    while not accepted:
+        rate = client_prm.get_rate_blob_data(host, blobs_to_query)
+        offer = Offer(rate)
+        accepted = host_prm.accept_rate_blob_data(client, blobs_to_query, offer)
+        turns += 1
+    return turns
+
+
+class AvailabilityWeightedStrategyTests(unittest.TestCase):
+    def test_first_offer_is_zero_and_second_is_not_if_offer_not_accepted(self):
+        strategy = BasicAvailabilityWeightedStrategy(DummyBlobAvailabilityTracker())
+        peer = "1.1.1.1"
+
+        blobs = strategy.price_model.blob_tracker.availability.keys()
+        offer1 = strategy.make_offer(peer, blobs)
+
+        offer2 = strategy.make_offer(peer, blobs)
+
+        self.assertEquals(offer1.rate, 0.0)
+        self.assertNotEqual(offer2.rate, 0.0)
+
+    def test_accept_zero_and_persist_if_accepted(self):
+        host_strategy = BasicAvailabilityWeightedStrategy(DummyBlobAvailabilityTracker())
+        client_strategy = BasicAvailabilityWeightedStrategy(DummyBlobAvailabilityTracker())
+
+        client = "1.1.1.1"
+        host = "1.1.1.2"
+        blobs = host_strategy.price_model.blob_tracker.availability.keys()
+
+        offer = client_strategy.make_offer(host, blobs)
+        response1 = host_strategy.respond_to_offer(offer, client, blobs)
+        client_strategy.update_accepted_offers(host, response1)
+
+        offer = client_strategy.make_offer(host, blobs)
+        response2 = host_strategy.respond_to_offer(offer, client, blobs)
+        client_strategy.update_accepted_offers(host, response2)
+
+        self.assertEquals(response1.is_too_low, False)
+        self.assertEquals(response1.is_accepted, True)
+        self.assertEquals(response1.rate, 0.0)
+
+        self.assertEquals(response2.is_too_low, False)
+        self.assertEquals(response2.is_accepted, True)
+        self.assertEquals(response2.rate, 0.0)
+
+    def test_how_many_turns_before_accept_with_similar_rate_settings(self):
+        base_rates = [0.0001 * n for n in range(1, 10)]
+        for host_base, client_base in itertools.product(base_rates, base_rates):
+            turns = calculate_negotation_turns(host_base,
+                                               client_base,
+                                               client_is_generous=False,
+                                               host_is_generous=False)
+            self.assertGreater(MAX_NEGOTIATION_TURNS, turns)
+
+    def test_generous_connects_in_one_turn(self):
+        base_rates = [0.0001 * n for n in range(1, 10)]
+        for host_base, client_base in itertools.product(base_rates, base_rates):
+            turns = calculate_negotation_turns(host_base, client_base)
+            self.assertEqual(1, turns)
+
+    def test_how_many_turns_with_generous_client(self):
+        base_rates = [0.0001 * n for n in range(1, 10)]
+        for host_base, client_base in itertools.product(base_rates, base_rates):
+            turns = calculate_negotation_turns(host_base,
+                                               client_base,
+                                               host_is_generous=False)
+            self.assertGreater(MAX_NEGOTIATION_TURNS, turns)
+
+    def test_how_many_turns_with_generous_host(self):
+        base_rates = [0.0001 * n for n in range(1, 10)]
+        for host_base, client_base in itertools.product(base_rates, base_rates):
+            turns = calculate_negotation_turns(host_base,
+                                               client_base,
+                                               client_is_generous=False)
+            self.assertGreater(MAX_NEGOTIATION_TURNS, turns)