NodejS中的Docker Websocket附加 [英] Docker Websocket Attaching in NodejS

问题描述

我想使用Websockets连接到Docker API，但是，在任何容器中，它只会显示403 Forbidden Error。我不知道我在做什么错，没有足够的文档，但这是我的代码：

  var docker = require（'docker.io'）（{{
 socketPath：false，
 host： http://127.0.0.1，
 port： 4500 
}） ; 
 var WebSocket = require（’ws’）; 
 
 var opts = {
 AttachStdin：是，
 AttachStdout：是，
 AttachStderr：是，
 Tty： true，
 OpenStdin：true，
 Cmd：[
 / bin / bash 
]，
 Image： ubuntu 
}; 
 
 docker.containers.create（opts，function（err，result）{
 if（！err）{
 var containerId = result.Id; 
控制台。 log（ Container，containerId， created）; 
 docker.containers.start（containerId，function（err，result）{
 console.log（result）; 
 var ws =新的WebSocket（'ws：//127.0.0.1：4500 / v1.7 / containers /'+ containerId +'/ attach / ws？logs = 1& stderr = 1& stdout = 1'）; 
 ws。 on（ open，function（）{
 console.log（ ok，open）; 
}）; 
 
 ws.on（ message，function（ msg）{
 console.log（ msg，msg）; 
}）; 
 
 ws.on（ error，function（msg）{
 console.log（ error，msg）; 
}）; 
}）; 
} else {
 console.log（err）; 
} 
}）; 
  

它产生的输出为：

 容器ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922创建了
 
错误[错误：服务器意外响应（403）] 
  

但是我看到Docker守护程序的输出如下：

 本地（127.0.0.1）在resolv.conf中找到的DNS解析器，容器无法使用它。使用默认的外部服务器：[8.8.8.8 8.8.4.4] 
 [/ var / lib / docker | f99d0d11] -job create（）= OK（0）
 2014/04/16 23:04： 09 POST http://127.0.0.1:4500/v1.7/containers/ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922/start 
 [error] common.go：41解析媒体类型时出错：错误：mime：无媒体类型
 [ / var / lib / docker | f99d0d11] +作业开始（ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922）
 [/ var / lib / docker | f99d0d11] +作业分配接口（ceeef5eb34acbdf / d99 / b99bfbd52df7d6b3bfbdbfbdbfbdbfbdbfbdbfbdbfbdbfbdbfbdbfbdbdbdbfbdbfbdbfbdbfbdbdbfbfbdbdbdbdbfbdbfbfbdbdbdbdbfbdbdbdbfbdbdbfbdbdbdbfbdbfbdbfbdbfbdbfbdbfbdbdfd dfd}作业allocate_interface（ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922）= OK（0）
 [/ var / lib / docker | f99d0d11] -job start（ceeef5eb34acf06dad7d6fea01dd71d9b3e69）（23）$ 09a94914 $ 3ea3e00aa079091414a3e0e0b0b0b0b0e3e0e0e0b0b0e0b0e0b0b0e0b0e0b0e0b0e0b0e0b0e0b0e0b0b0b0b0b0b0c0e0b0b0e0b0b0b0c0e0e0b0b0b0b0b0b人员/v1.7/containers/ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922/attach/ws 
 [/ var / lib / docker | f99d0d11] +作业检查（ceeef5eb34acf06dad7d6fea01dd7 1d9b0283c63b14bc52d49585aa379ec4922，容器）
 [/ var / lib / docker | f99d0d11] -job inspect（ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922，container）= OK（0）
> c b 
 $ b 
可以看出，请求到达了Daemon，但没有迹象表明为什么会给出403 Forbidden错误。 
解决方案
似乎我需要将 127.0.0.1 更改为 localhost ，它神奇地起作用。
 
I want to connect to Docker API with Websockets, however, in any container it just gives me 403 Forbidden Error. I do not know what I am doing wrong, there is not enough documentation about it, but here is my code:
var docker = require('docker.io')({
    socketPath: false,
    host: "http://127.0.0.1",
    port: "4500"
});
var WebSocket = require('ws');

var opts = {
    "AttachStdin": true,
    "AttachStdout": true,
    "AttachStderr": true,
    "Tty": true,
    "OpenStdin": true,
    "Cmd": [
        "/bin/bash"
    ],
    "Image": "ubuntu"
};

docker.containers.create(opts, function(err, result) {
    if (!err) {
        var containerId = result.Id;
        console.log("Container", containerId, "created");
        docker.containers.start(containerId, function(err, result) {
            console.log(result);
            var ws = new WebSocket('ws://127.0.0.1:4500/v1.7/containers/' + containerId + '/attach/ws?logs=1&stderr=1&stdout=1');
            ws.on("open", function() {
                console.log("ok, open");
            });

            ws.on("message", function(msg) {
                console.log("msg", msg);
            });

            ws.on("error", function(msg) {
                console.log("error", msg);
            });
        });
    } else {
        console.log(err);
    }
});
The output it produces is:
Container ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922 created

error [Error: unexpected server response (403)]
But I see the Docker daemon output as follows:
Local (127.0.0.1) DNS resolver found in resolv.conf and containers can't use it. Using default external servers : [8.8.8.8 8.8.4.4]
[/var/lib/docker|f99d0d11] -job create() = OK (0)
2014/04/16 23:04:09 POST http://127.0.0.1:4500/v1.7/containers/ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922/start
[error] common.go:41 Error parsing media type:  error: mime: no media type
[/var/lib/docker|f99d0d11] +job start(ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922)
[/var/lib/docker|f99d0d11] +job allocate_interface(ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922)
[/var/lib/docker|f99d0d11] -job allocate_interface(ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922) = OK (0)
[/var/lib/docker|f99d0d11] -job start(ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922) = OK (0)
2014/04/16 23:04:09 GET /v1.7/containers/ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922/attach/ws
[/var/lib/docker|f99d0d11] +job inspect(ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922, container)
[/var/lib/docker|f99d0d11] -job inspect(ceeef5eb34acf06dad7d6fea01dd71d9b0283c63b14bc52d49585aa379ec4922, container) = OK (0)
As it can be seen requests comes to Daemon but there is no indication why it gives a 403 Forbidden error.  
解决方案
It seems that I needed to change 127.0.0.1 to localhost and it magically worked.

                        
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