Merge pull request #1148 from ipfs/warnOnProtocolEOF

only warn about io.EOF from mux.ReaderHeaders (fixes #1143)

p2p/host/basic/basic_host.go

 package basichost
 
 import (
+	"io"
+
 	ma "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/go-multiaddr"
 	goprocess "github.com/ipfs/go-ipfs/Godeps/_workspace/src/github.com/jbenet/goprocess"
 	context "github.com/ipfs/go-ipfs/Godeps/_workspace/src/golang.org/x/net/context"
@@ -95,7 +97,11 @@ func (h *BasicHost) newConnHandler(c inet.Conn) {
 func (h *BasicHost) newStreamHandler(s inet.Stream) {
 	protoID, handle, err := h.Mux().ReadHeader(s)
 	if err != nil {
-		log.Error("protocol mux failed: %s", err)
+		if err == io.EOF {
+			log.Debugf("protocol EOF: %s", s.Conn().RemotePeer())
+		} else {
+			log.Warning("protocol mux failed: %s", err)
+		}
 		return
 	}
 
@@ -114,7 +120,7 @@ func (h *BasicHost) Peerstore() peer.Peerstore {
 	return h.Network().Peerstore()
 }
 
-// Networks returns the Network interface of the Host
+// Network returns the Network interface of the Host
 func (h *BasicHost) Network() inet.Network {
 	return h.network
 }
@@ -124,6 +130,7 @@ func (h *BasicHost) Mux() *protocol.Mux {
 	return h.mux
 }
 
+// IDService returns
 func (h *BasicHost) IDService() *identify.IDService {
 	return h.ids
 }
@@ -136,6 +143,7 @@ func (h *BasicHost) SetStreamHandler(pid protocol.ID, handler inet.StreamHandler
 	h.Mux().SetHandler(pid, handler)
 }
 
+// RemoveStreamHandler returns ..
 func (h *BasicHost) RemoveStreamHandler(pid protocol.ID) {
 	h.Mux().RemoveHandler(pid)
 }
@@ -232,6 +240,7 @@ func (h *BasicHost) Close() error {
 	return h.proc.Close()
 }
 
+// GetBandwidthReporter exposes the Host's bandiwth metrics reporter
 func (h *BasicHost) GetBandwidthReporter() metrics.Reporter {
 	return h.bwc
 }