/
subhandler.go
59 lines (49 loc) · 1.52 KB
/
subhandler.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/v2"
"nanomsg.org/go/mangos/v2/protocol/pub"
// register ws transport
"nanomsg.org/go/mangos/v2/transport/ws"
)
// subHandler just spins on the socket and publishes messages. It sends
// "PUB #<count> <time>". Not very interesting...
func subHandler(sock mangos.Socket) {
count := 0
for {
msg := fmt.Sprintf("PUB #%d %s", count, time.Now().String())
if e := sock.Send([]byte(msg)); e != nil {
die("Cannot send pub: %v", e)
}
time.Sleep(5 * time.Second)
count++
}
}
func addSubHandler(mux *http.ServeMux, port int) {
sock, _ := pub.NewSocket()
url := fmt.Sprintf("ws://127.0.0.1:%d/sub", 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("cannot get handler: %v", e)
} else {
mux.Handle("/sub", h.(http.Handler))
l.Listen()
}
go subHandler(sock)
}