// Sends an AppendEntries RPC to a peer. func (t *HTTPTransporter) SendAppendEntriesRequest(server raft.Server, peer *raft.Peer, req *raft.AppendEntriesRequest) *raft.AppendEntriesResponse { var b bytes.Buffer if _, err := req.Encode(&b); err != nil { //log.Println("transporter.ae.encoding.error:", err) return nil } url := joinPath(peer.ConnectionString, t.AppendEntriesPath()) //log.Println(server.Name(), "POST", url) //oldTimeout := t.Transport.ResponseHeaderTimeout t.Transport.ResponseHeaderTimeout = server.ElectionTimeout() httpResp, err := t.httpClient.Post(url, "application/protobuf", &b) if httpResp == nil || err != nil { //log.Println("transporter.ae.response.error:", err) return nil } //t.Transport.ResponseHeaderTimeout = oldTimeout defer httpResp.Body.Close() resp := &raft.AppendEntriesResponse{} if _, err = resp.Decode(httpResp.Body); err != nil && err != io.EOF { //log.Println("transporter.ae.decoding.error:", err) return nil } return resp }