为什么此Go程序的websocket连接建立失败？

Question

I am using this ip 192.168.1.55. I need to send some data to 192.168.1.137. I am using this code

package main

import (
    "fmt"
    "net/http"
    "os"
    "code.google.com/p/go.net/websocket"
)

func Echo(ws *websocket.Conn) {
    fmt.Println("Echoing")

    for n := 0; n < 10; n++ {
        msg := "Hello  " + string(n+48)
        fmt.Println("Sending to client: " + msg)
        err := websocket.Message.Send(ws, msg)
        if err != nil {
            fmt.Println("Can't send")
            break
        }
    }
}

func main() {

    http.Handle("http://192.168.1.137", websocket.Handler(Echo))
    http.ListenAndServe(":4242", nil)
}

func checkError(err error) {
    if err != nil {
        fmt.Println("Fatal error ", err.Error())
        os.Exit(1)
    }
}

But my ip is not connecting to the other ip which i have mentioned above(192.168.1.137). How to fix this?

Answer 1

The path given for handling is wrong. You have to define the route on which the websocket should connect.

func main() {
    http.Handle("http://192.168.1.137", websocket.Handler(Echo))
    http.ListenAndServe(":4242", nil)
}

should be

func main() {
    http.Handle("/", websocket.Handler(Echo))
    http.ListenAndServe(":4242", nil)
}

You can use Websocket.org to test your code.