dropped fiber for std http + gorilla websocket

Session serialization will use gob encoding instead of json.
Binary size will likely be reduced.
General backend code refactoring.

server/rpc/wrapper.go

@@ -0,0 +1,39 @@
+package rpc
+
+import (
+	"bytes"
+	"io"
+	"net/rpc/jsonrpc"
+)
+
+// Wrapper for HTTP RPC request that implements io.Reader interface
+type rpcRequest struct {
+	r    io.Reader
+	rw   io.ReadWriter
+	done chan bool
+}
+
+func newRequest(r io.Reader) *rpcRequest {
+	var buf bytes.Buffer
+	done := make(chan bool)
+	return &rpcRequest{r, &buf, done}
+}
+
+func (r *rpcRequest) Read(p []byte) (n int, err error) {
+	return r.r.Read(p)
+}
+
+func (r *rpcRequest) Write(p []byte) (n int, err error) {
+	return r.rw.Write(p)
+}
+
+func (r *rpcRequest) Close() error {
+	r.done <- true
+	return nil
+}
+
+func (r *rpcRequest) Call() io.Reader {
+	go jsonrpc.ServeConn(r)
+	<-r.done
+	return r.rw
+}