与android的socket.io通信

时间：2012-03-19 21:02:44

标签： android node.js cordova socket.io

问题摘要

我正在尝试将一个简单的socket.io聊天应用捆绑到一个原生应用中，以便在Android 2.2及更高版本上使用phonegap运行。

socket.io网络客户端 - ＆gt; socket.io服务器工作

我有一个运行socket.io的简单服务器，当它在网络浏览器中运行时，它成功地与socket.io客户端通信。

移动浏览器中的socket.io移动客户端 - ＆gt; socket.io服务器工作

请注意because websockets arent supported on Android 2.2默认返回xhr轮询，在Android 2.2上通过Web浏览器连接时从服务器采样消息 

[root@webnode-2 nodechat]# node server.js
   info  - socket.io started
   debug - client authorized
   info  - handshake authorized 6036976111002307981
   debug - setting request GET /socket.io/1/xhr-polling/6036976111002307981?t=1332184313758
   debug - setting poll timeout
   debug - client authorized for
   debug - clearing poll timeout
   debug - xhr-polling writing 1::
   debug - set close timeout for client 6036976111002307981
6036976111002307981
   debug - setting request GET /socket.io/1/xhr-polling/6036976111002307981?t=1332184313839
   debug - setting poll timeout
   debug - clearing poll timeout
   debug - xhr-polling writing 5:::{"name":"message","args":["Welcome stranger!"]}
   debug - set close timeout for client 6036976111002307981
   debug - discarding transport
   debug - cleared close timeout for client 6036976111002307981
   debug - setting request GET /socket.io/1/xhr-polling/6036976111002307981?t=1332184313928
   debug - setting poll timeout
   debug - discarding transport
   debug - cleared close timeout for client 6036976111002307981
   debug - clearing poll timeout
   debug - xhr-polling writing 8::
   debug - set close timeout for client 6036976111002307981
   debug - xhr-polling closed due to exceeded duration
   debug - setting request GET /socket.io/1/xhr-polling/6036976111002307981?t=1332184334139
   debug - setting poll timeout
   debug - discarding transport
   debug - cleared close timeout for client 6036976111002307981
   debug - xhr-polling received data packet 5:::{"name":"connect_friends","args":[{"user_id":"2","friends_list":[1,2,3,4,5,6,7,8,9,10]}]}






REGISTER USER






{ user_id: '2',
  friends_list: [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] }
10
assigned user_id: 2 to socket 6036976111002307981

来自phonegap的

socket.io - ＆gt; socket.io服务器失败

但是，当我尝试连接phonegap中的socket.io时，连接已打开，但很快就关闭了。

在android日志中有关于requirin flash player＆gt; v10的错误，但我的手机有flash player v 11.1 

03-19 11:38:46.847: I/PhoneGapLog(18469): Found log level DEBUG
03-19 11:38:46.847: I/PhoneGapLog(18469): Changing log level to DEBUG(3)
03-19 11:38:46.847: D/DroidGap(18469): DroidGap.onCreate()
03-19 11:38:46.847: D/DroidGap(18469): DroidGap.loadUrl(file:///android_asset/www/index.html)
03-19 11:38:46.847: D/DroidGap(18469): DroidGap: url=file:///android_asset/www/index.html baseUrl=file:///android_asset/www/
03-19 11:38:46.847: D/DroidGap(18469): DroidGap.init()
03-19 11:38:46.941: D/dalvikvm(18469): GC_FOR_MALLOC freed 6234 objects / 618952 bytes in 68ms
03-19 11:38:46.968: D/SoftKeyboardDetect(18469): Ignore this event
03-19 11:38:47.007: D/SoftKeyboardDetect(18469): Ignore this event
03-19 11:38:47.058: D/SoftKeyboardDetect(18469): Ignore this event



03-19 11:38:47.241: D/PhoneGapLog(18469): Flash Player >= 10.0.0 is required.
03-19 11:38:47.241: D/PhoneGapLog(18469): file:///android_asset/www/js/socket.io/socket.io.js: Line 2622 : Flash Player >= 10.0.0 is required.
03-19 11:38:47.241: E/Web Console(18469): Flash Player >= 10.0.0 is required. at file:///android_asset/www/js/socket.io/socket.io.js:2622



03-19 11:38:47.796: D/PhoneGapLog(18469): Receiving Welcome stranger!
03-19 11:38:47.796: D/PhoneGapLog(18469): file:///android_asset/www/index.html: Line 8 : Receiving Welcome stranger!
03-19 11:38:47.796: I/Web Console(18469): Receiving Welcome stranger! at file:///android_asset/www/index.html:8
03-19 11:39:07.007: E/DroidGap(18469): DroidGap: TIMEOUT ERROR! - calling webViewClient
03-19 11:39:07.007: D/Cordova(18469): DroidGap: GapViewClient.onReceivedError: Error code=-6 Description=The connection to the server was unsuccessful. URL=file:///android_asset/www/index.html
03-19 11:39:07.167: D/SoftKeyboardDetect(18469): Ignore this event
03-19 11:39:16.323: D/dalvikvm(18469): GC_EXPLICIT freed 6130 objects / 505920 bytes in 156ms

服务器上的事件日志是 

[root@webnode-2 nodechat]# node server.js
   info  - socket.io started
   debug - client authorized
   info  - handshake authorized 1009349893764580916
   debug - setting request GET /socket.io/1/xhr-polling/1009349893764580916?t=1332182327502
   debug - setting poll timeout
   debug - client authorized for
   debug - clearing poll timeout
   debug - xhr-polling writing 1::
   debug - set close timeout for client 1009349893764580916
   debug - setting request GET /socket.io/1/xhr-polling/1009349893764580916?t=1332182327602
   debug - setting poll timeout
   debug - clearing poll timeout
   debug - xhr-polling writing 5:::{"name":"message","args":["Welcome stranger!"]}
   debug - set close timeout for client 1009349893764580916
   debug - discarding transport
   debug - cleared close timeout for client 1009349893764580916
   debug - setting request GET /socket.io/1/xhr-polling/1009349893764580916?t=1332182327802
   debug - setting poll timeout
   debug - discarding transport
   debug - cleared close timeout for client 1009349893764580916
   debug - clearing poll timeout
   info  - transport end
   debug - set close timeout for client 1009349893764580916
   debug - cleared close timeout for client 1009349893764580916






DISCONNECTED EVENT






debug - discarding transport
   debug - client authorized
   info  - handshake authorized 2044675477593417130
   debug - setting request GET /socket.io/1/xhr-polling/2044675477593417130?t=1332182347938
   debug - setting poll timeout
   debug - client authorized for
   debug - clearing poll timeout
   debug - xhr-polling writing 1::
   debug - set close timeout for client 2044675477593417130
   debug - setting request GET /socket.io/1/xhr-polling/2044675477593417130?t=1332182348112
   debug - setting poll timeout
   debug - clearing poll timeout
   debug - xhr-polling writing 5:::{"name":"message","args":["Welcome stranger!"]}
   debug - set close timeout for client 2044675477593417130
   debug - discarding transport
   debug - cleared close timeout for client 2044675477593417130
   debug - setting request GET /socket.io/1/xhr-polling/2044675477593417130?t=1332182348308
   debug - setting poll timeout
   debug - discarding transport
   debug - cleared close timeout for client 2044675477593417130
   debug - clearing poll timeout
   info  - transport end
   debug - set close timeout for client 2044675477593417130
   debug - cleared close timeout for client 2044675477593417130






DISCONNECTED EVENT






debug - discarding transport

来自服务器的消息说＆＃34;欢迎陌生人！＆＃34;是通过电话收到的。在电话上，对话框显示应用程序错误，与服务器的连接失败。 （文件：///android_asset/www/index.html）

电话间隙websockets客户端 - ＆gt; socket.io服务器失败

然后我读到，在phonegap中还没有支持websockets，并且WebSocket support in Android’s Phonegap apps遇到了这个项目。当我运行并尝试连接socket.io服务器时，我收到了错误

[root@webnode-2 nodechat]# node server.js
   info  - socket.io started
   debug - destroying non-socket.io upgrade

which i believe is due to trying to connect to a socket.io server using websockets without using the socket.io client js。我只使用node.js服务器测试它并且它可以工作

问题

  1. 有没有办法告诉socket.io关于使用WebSocket support in Android’s Phonegap apps创建的websocket？
  2. 为什么xhr轮询超时？

2 个答案:

答案 0 :(得分：1)

您需要查看HTTP标头。我的猜测是客户端要么不发送保持活动，要么被服务器忽略。在客户端发送的XHR请求中查找“Connection：keep-alive”。另请查看服务器端的响应。另一个指标可能是发送的http版本.. 1.0将暗示在请求后要关闭连接。

答案 1 :(得分：1)

1 - Socket.io在websocket的顶部添加了另一层（例如，它添加了心跳）。连接第三方lib不会被服务器接受（＆＃39;销毁nonsocket.io upgrade＆＃39;消息表明）。我还没有找到/使用过解决方案，我可能会修改phonegap ObjectiveC代码以加载外部网址而不是使用本地资源来避免此问题：Socket.io + PhoneGap。

2 - 轮询是一种技巧，客户端连接到服务器就好像它想要加载页面一样。但是服务器不提供页面，它在消息到达时写入消息，模拟套接字连接。但是，协议栈（浏览器端http，如果我理解全部？）不允许无限连接。它将断开连接，使超时。然后，socket.io客户端将重新启动新连接，直到它再次超时。因此，每30秒左右定期超时是一种正常行为。如果连接立即中断，则可能是访问源问题，但我不确定。

相关问题
最新问题