mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
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2428880058
* Update go-libp2p to 0.12.0 go-libp2p 0.12.0 made some significant changes to the stream interfaces around stream closing: * Close now closes in both directions and frees the stream. However, unlike FullClose did, it doesn't _wait_ for the remote peer to respond with an EOF. * To close for writing, call CloseWrite (like one would on a TCP connection, etc.). This patch: * Replaces calls to FullClose with Close where appropriate. * Replaces calls to Close with CloseWrite where appropriate. * Removes redundant Close calls. * Calls Reset to where appropriate to indicate that the request/response was aborted. Unlike Close, this will not flush and will not cause the remote peer to read an EOF. Instead, the remote peer will read an ErrReset error. * Ensures we always either close or reset streams. Send wasn't closing the stream on some error paths. * Now that stream closing is async, we explicitly wait for a response when "hanging up" on a peer (so we don't hang up before they receive our response/goodbye message). * update bazel * Gazelle * revert unintentional bazel workspace change * appease an overzealous linter * update to latest * Refactor encoder * gazelle * Gazelle Co-authored-by: Preston Van Loon <preston@prysmaticlabs.com> Co-authored-by: Nishant Das <nishdas93@gmail.com> Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>
55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package p2p
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import (
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"context"
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"github.com/libp2p/go-libp2p-core/network"
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"github.com/libp2p/go-libp2p-core/peer"
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"github.com/libp2p/go-libp2p-core/protocol"
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"github.com/prysmaticlabs/prysm/shared/traceutil"
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"go.opencensus.io/trace"
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)
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// Send a message to a specific peer. The returned stream may be used for reading, but has been
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// closed for writing.
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//
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// When done, the caller must Close or Reset on the stream.
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func (s *Service) Send(ctx context.Context, message interface{}, baseTopic string, pid peer.ID) (network.Stream, error) {
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ctx, span := trace.StartSpan(ctx, "p2p.Send")
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defer span.End()
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if err := VerifyTopicMapping(baseTopic, message); err != nil {
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return nil, err
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}
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topic := baseTopic + s.Encoding().ProtocolSuffix()
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span.AddAttributes(trace.StringAttribute("topic", topic))
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// Apply max dial timeout when opening a new stream.
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ctx, cancel := context.WithTimeout(ctx, maxDialTimeout)
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defer cancel()
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stream, err := s.host.NewStream(ctx, pid, protocol.ID(topic))
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if err != nil {
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traceutil.AnnotateError(span, err)
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return nil, err
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}
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// do not encode anything if we are sending a metadata request
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if baseTopic != RPCMetaDataTopic {
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if _, err := s.Encoding().EncodeWithMaxLength(stream, message); err != nil {
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traceutil.AnnotateError(span, err)
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_err := stream.Reset()
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_ = _err
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return nil, err
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}
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}
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// Close stream for writing.
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if err := stream.CloseWrite(); err != nil {
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traceutil.AnnotateError(span, err)
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_err := stream.Reset()
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_ = _err
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return nil, err
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}
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return stream, nil
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}
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