rpc: fix godoc comments and run gofmt

rpc/ipc.go

@@ -54,4 +54,3 @@ func DialIPC(ctx context.Context, endpoint string) (*Client, error) {
 		return NewCodec(conn), err
 	})
 }
-

rpc/json.go

@@ -173,7 +173,7 @@ type jsonCodec struct {
 	conn    deadlineCloser
 }
 
-// NewCodec creates a codec which uses the given functions to read and write. If conn
+// NewFuncCodec creates a codec which uses the given functions to read and write. If conn
 // implements ConnRemoteAddr, log messages will use it to include the remote address of
 // the connection.
 func NewFuncCodec(conn deadlineCloser, encode, decode func(v interface{}) error) ServerCodec {

rpc/server.go

@@ -66,7 +66,7 @@ func (s *Server) RegisterName(name string, receiver interface{}) error {
 	return s.services.registerName(name, receiver)
 }
 
-// receiver reads incoming requests from codec, calls the appropriate callback and writes
+// ServeCodec reads incoming requests from codec, calls the appropriate callback and writes
 // the response back using the given codec. It will block until the codec is closed or the
 // server is stopped. In either case the codec is closed.
 //