fix redundant blob request to peer

lbrynet/core/client/BlobRequester.py

@@ -226,7 +226,8 @@ class RequestHelper(object):
         self.requestor._update_local_score(self.peer, score)
 
     def _request_failed(self, reason, request_type):
-        if reason.check(DownloadCanceledError, RequestCanceledError, ConnectionAborted):
+        if reason.check(DownloadCanceledError, RequestCanceledError, ConnectionAborted,
+                        ConnectionClosedBeforeResponseError):
             return
         if reason.check(NoResponseError):
             self.requestor._incompatible_peers.append(self.peer)

lbrynet/core/client/ClientProtocol.py

@@ -51,19 +51,8 @@ class ClientProtocol(Protocol, TimeoutMixin):
         self.setTimeout(None)
         self._rate_limiter.report_dl_bytes(len(data))
 
-        def in_case_IOError():
-            #TODO: writes can raise IOError if another peer finished
-            #writing and closes the other peeer's writers. Fix this
-            #by preventing peers from downloading the same blobs
-            msg = "Failed to write, blob is likely closed by another peer finishing download"
-            log.warn(msg)
-            self.transport.loseConnection()
-
         if self._downloading_blob is True:
-            try:
-                self._blob_download_request.write(data)
-            except IOError as e:
-                in_case_IOError()
+            self._blob_download_request.write(data)
         else:
             self._response_buff += data
             if len(self._response_buff) > conf.settings['MAX_RESPONSE_INFO_SIZE']:
@@ -75,12 +64,7 @@ class ClientProtocol(Protocol, TimeoutMixin):
                 self._response_buff = ''
                 self._handle_response(response)
                 if self._downloading_blob is True and len(extra_data) != 0:
-                    try:
-                        self._blob_download_request.write(extra_data)
-                    except IOError as e:
-                        in_case_IOError()
-
-
+                    self._blob_download_request.write(extra_data)
 
     def timeoutConnection(self):
         log.info("Connection timed out to %s", self.peer)