英文:
Azure WebSocket not working with Go httpPlatformHandler
问题
我在Azure Web App上使用WebSocket遇到了困难，我正在将一个Node应用程序从Azure迁移到Go应用程序。
WebSocket在门户上已启用，这是我的web.config配置文件：
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.web>
<customErrors mode="Off"/>
</system.web>
<system.webServer>
<webSocket enabled="false" />
<handlers>
<add name="httpplatformhandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified" />
</handlers>
<httpPlatform stdoutLogEnabled="true" processPath="d:\home\site\wwwroot\v-0.0.10.exe"
arguments=""
startupTimeLimit="60">
<environmentVariables>
<environmentVariable name="GOROOT" value="d:\home\site\wwwroot\go" />
</environmentVariables>
</httpPlatform>
</system.webServer>
</configuration>
当然，在本地它工作正常。起初，我只尝试了这个示例：
package main
import (
"code.google.com/p/go.net/websocket"
"io"
"net/http"
"os"
)
func echoHandler(ws *websocket.Conn) {
io.Copy(ws, ws)
}
func main() {
http.Handle("/echo", websocket.Handler(echoHandler))
http.Handle("/", http.FileServer(http.Dir(".")))
err := http.ListenAndServe(":"+os.Getevn("HTTP_PLATFORM_PORT"), nil)
if err != nil {
panic("ListenAndServe: " + err.Error())
}
}
在客户端，我只是尝试连接：
var ws = new WebSocket("url");
ws.onopen = function() { ws.send("test"); }
ws.onmessage = function(e) { console.log(e.data); }
在部署到Azure后，readyState始终保持为0，onopen从未被调用。最终失败，并显示连接错误：
WebSocket connection to 'wss://***.azurewebsites.net/echo' failed: Error during WebSocket handshake: Unexpected response code: 500
我甚至尝试使用Gorilla WebSocket示例，以查看是否是Go扩展包的问题。
我尝试过的事情：
-
从web.config中删除
<webSocket enabled="false" />[相同的问题，但似乎需要更长时间才会发生。 -
添加一个标准的
http.HandleFunc来提供一个“标准”页面，它可以正常工作。
我在Azure上部署了一些Go应用程序，只是第一个需要使用WebSocket的应用程序，我想知道我做错了什么/没有理解的地方。
非常感谢任何帮助。
英文:
I'm having a hard time making websocket works on an Azure Web App, I'm currently porting a Node app from Azure to a Go app.
WebSocket is enable on the portal and here's my web.config
<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.web>
<customErrors mode="Off"/>
</system.web>
<system.webServer>
<webSocket enabled="false" />
<handlers>
<add name="httpplatformhandler" path="*" verb="*" modules="httpPlatformHandler" resourceType="Unspecified" />
</handlers>
<httpPlatform stdoutLogEnabled="true" processPath="d:\home\site\wwwroot\v-0.0.10.exe"
arguments=""
startupTimeLimit="60">
<environmentVariables>
<environmentVariable name="GOROOT" value="d:\home\site\wwwroot\go" />
</environmentVariables>
</httpPlatform>
</system.webServer>
</configuration>
Of course locally it's working fine. At first I only tried this sample:
package main
import (
"code.google.com/p/go.net/websocket"
"io"
"net/http"
"os"
)
func echoHandler(ws *websocket.Conn) {
io.Copy(ws, ws)
}
func main() {
http.Handle("/echo", websocket.Handler(echoHandler))
http.Handle("/", http.FileServer(http.Dir(".")))
err := http.ListenAndServe(":"+os.Getevn("HTTP_PLATFORM_PORT"), nil)
if err != nil {
panic("ListenAndServe: " + err.Error())
}
}
On the client side I simply try to connect:
var ws = new WebSocket("url")
ws.onopen = function() { ws.send("test"); }
ws.onmessage = function(e) { console.log(e.data); }
When deployed on Azure, the readystate always stays at 0, onopen is never call. It ultimately failed saying there's an error connecting:
WebSocket connection to 'wss://***.azurewebsites.net/echo' failed: Error during WebSocket handshake: Unexpected response code: 500
I even tried with Gorilla Websocket example to see if the Go extended package was in cause.
Things I tried:
-
Removed the
<webSocket enabled="false" />from web.config [same issue but it appears to take longer before occuring -
Adding a standard
http.HandleFuncto serve a "standard" page and it works fine.
I have a handful of Go app deploy to Azure, it's just the first one that I would need to use websocket, and I would like to know what I'm doing wrong / not understanding.
Any help would be greatly appreciated
答案1
得分: 1
我参考了你的代码并创建了一个示例，它对我来说有效。我没有做任何自定义的web.config，而是使用了来自Azure部署脚本的默认配置。
这是示例仓库的链接：https://github.com/shrimpy/gowebsockettry
英文:
I reference your code and created a sample, it is working for me.
I didn`t do any custom web.config but using the default one come from Azure Deployment script.
here is the sample repo: https://github.com/shrimpy/gowebsockettry
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