/
reqhandler.go
62 lines (53 loc) · 1.62 KB
/
reqhandler.go
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// Copyright 2018 The Mangos Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"fmt"
"net/http"
"time"
"nanomsg.org/go-mangos"
"nanomsg.org/go-mangos/protocol/rep"
"nanomsg.org/go-mangos/transport/ws"
)
// reqHandler just spins on the socket and reads messages. It replies
// with "REPLY <time>". Not very interesting...
func reqHandler(sock mangos.Socket) {
count := 0
for {
// don't care about the content of received message
_, e := sock.Recv()
if e != nil {
die("Cannot get request: %v", e)
}
reply := fmt.Sprintf("REPLY #%d %s", count, time.Now().String())
if e := sock.Send([]byte(reply)); e != nil {
die("Cannot send reply: %v", e)
}
count++
}
}
func addReqHandler(mux *http.ServeMux, port int) {
sock, _ := rep.NewSocket()
sock.AddTransport(ws.NewTransport())
url := fmt.Sprintf("ws://127.0.0.1:%d/req", port)
if l, e := sock.NewListener(url, nil); e != nil {
die("bad listener: %v", e)
} else if h, e := l.GetOption(ws.OptionWebSocketHandler); e != nil {
die("bad handler: %v", e)
} else {
mux.Handle("/req", h.(http.Handler))
l.Listen()
}
go reqHandler(sock)
}