117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
package http3
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import (
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"crypto/tls"
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"crypto/x509"
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"net/http"
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"strings"
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"sync"
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"time"
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"github.com/lbryio/reflector.go/shared"
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"github.com/lbryio/reflector.go/store"
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"github.com/lbryio/lbry.go/v2/extras/errors"
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"github.com/lbryio/lbry.go/v2/stream"
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"github.com/lucas-clemente/quic-go"
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"github.com/lucas-clemente/quic-go/http3"
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)
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// Store is a blob store that gets blobs from a peer.
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// It satisfies the store.BlobStore interface but cannot put or delete blobs.
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type Store struct {
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opts StoreOpts
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NotFoundCache *sync.Map
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}
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// StoreOpts allows to set options for a new Store.
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type StoreOpts struct {
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Address string
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Timeout time.Duration
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}
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// NewStore makes a new peer store.
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func NewStore(opts StoreOpts) *Store {
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return &Store{opts: opts, NotFoundCache: &sync.Map{}}
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}
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func (p *Store) getClient() (*Client, error) {
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var qconf quic.Config
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window500M := 500 * 1 << 20
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qconf.MaxStreamReceiveWindow = uint64(window500M)
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qconf.MaxConnectionReceiveWindow = uint64(window500M)
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qconf.EnableDatagrams = true
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qconf.HandshakeIdleTimeout = 4 * time.Second
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qconf.MaxIdleTimeout = 20 * time.Second
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pool, err := x509.SystemCertPool()
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if err != nil {
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return nil, err
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}
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roundTripper := &http3.RoundTripper{
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TLSClientConfig: &tls.Config{
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RootCAs: pool,
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InsecureSkipVerify: true,
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},
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QuicConfig: &qconf,
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}
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connection := &http.Client{
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Transport: roundTripper,
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}
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c := &Client{
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conn: connection,
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roundTripper: roundTripper,
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ServerAddr: p.opts.Address,
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}
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return c, errors.Prefix("connection error", err)
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}
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func (p *Store) Name() string { return "http3" }
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// Has asks the peer if they have a hash
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func (p *Store) Has(hash string) (bool, error) {
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c, err := p.getClient()
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if err != nil {
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return false, err
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}
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defer c.Close()
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return c.HasBlob(hash)
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}
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// Get downloads the blob from the peer
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func (p *Store) Get(hash string) (stream.Blob, shared.BlobTrace, error) {
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start := time.Now()
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if lastChecked, ok := p.NotFoundCache.Load(hash); ok {
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if lastChecked.(time.Time).After(time.Now().Add(-5 * time.Minute)) {
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return nil, shared.NewBlobTrace(time.Since(start), p.Name()+"-notfoundcache"), store.ErrBlobNotFound
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}
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}
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c, err := p.getClient()
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if err != nil && strings.Contains(err.Error(), "blob not found") {
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p.NotFoundCache.Store(hash, time.Now())
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}
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if err != nil {
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return nil, shared.NewBlobTrace(time.Since(start), p.Name()), err
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}
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defer c.Close()
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return c.GetBlob(hash)
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}
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// Put is not supported
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func (p *Store) Put(hash string, blob stream.Blob) error {
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return errors.Err(shared.ErrNotImplemented)
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}
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// PutSD is not supported
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func (p *Store) PutSD(hash string, blob stream.Blob) error {
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return errors.Err(shared.ErrNotImplemented)
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}
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// Delete is not supported
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func (p *Store) Delete(hash string) error {
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return errors.Err(shared.ErrNotImplemented)
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}
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// Shutdown is not supported
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func (p *Store) Shutdown() {
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}
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