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Android XMPP服务器, BOSH(Http-Binding)和WEB客户端搭建

目标: 搭建一个XMPP服务器, 实现在web page上用javascript与自己XMPP服务器通信, 匿名登录并与任何一个XMPP(Jabber)帐户通信. (Gtalk目前尚有问题)

XMPP服务器可能不是必须的(见下文, 我没有尝试)

环境与配置:

XMPP服务器:ejabberd文档
HTTP-Binding: 使用ejabberd搭建, 5280端口.
Javascript Client:Strophe文档

安装Ejabberd

yuminstallejabberd#apt-get install ejabberd

编辑配置文件: /etc/ejabberd/ejabberd.cfg, 这是个era lang格式配置文件, 行注释符号是%. 请参考ejabberd文档.

下面是默认配置文件里我修改过部分:

%%debug{loglevel, 5}.{hosts, ["sagan.me"]}.{host_config, "sagan.me", [{auth_method, [anonymous,internal]},{anonymous_protocol, sasl_anon}]}.{listen, [  {5222, ejabberd_c2s, [                        {certfile, "/path/to/ssl/cert.pem"},                        %%starttls,                        starttls_required,                        {access, c2s},                        {shaper, c2s_shaper},                        {max_stanza_size, 65536}                       ]},  {5269, ejabberd_s2s_in, [                           {shaper, s2s_shaper},                           {max_stanza_size, 131072}                          ]},  {{5280, "127.0.0.1"}, ejabberd_http, [                        {request_handlers, [{["http-bind"], mod_http_bind}]},                         captcha                        ]} ]}.{s2s_use_starttls, true}.{s2s_certfile, "/path/to/ssl/cert.pem"}.{s2s_default_policy, allow}.{auth_method, [internal, anonymous]}.

上面配置中, 声明监听127.0.0.1(本地IP地址) 5280端口为http-binding (BOSH)服务地址, 路径是"http-bind", 即服务实际URI是"http://127.0.0.1:5280/http-bind". 然后需要在web服务器配置中用mod_proxy或mod_rewrite将80或443端口上对 "/http-bind" 访问转发到"http://127.0.0.1:5280/http-bind", 因为由于浏览器同源限制, yourdomain.com:80上的web page是无法直接向yourdomain.tld:5280提交ajax请求的. ( 所以在上面配置中把ejabberd http-bind监听的端口设为了127.0.0.1:5280, 即不能从外部直接访问)

添加域名DNS SRV记录

这一步是必须的, 否则搭建的XMPP服务器基本上无法与大多数其它服务器或客户端通信. (插一句: Google Apps Talk基于XMPP平台, 如果不设置域名SRV记录的话, 就只能够用Gtalk登录(无法使用其它XMPP客户端), 而且只能和gmail.com或其它Google Apps域名的帐户通信)

_xmpp-client._tcp.sagan.me. 86400 IN SRV 10 0 5222 sagan.me.
_xmpp-server._tcp.sagan.me. 86400 IN SRV 10 0 5269 sagan.me.

5269和5222是XMPP在ICANN注册的标准端口.

修改WEB服务器配置

我的Lighttpd ModProxy配置:

proxy.server = (        "/http-bind" => ( (                "host" => "127.0.0.1",                "port" => 5280        ) ))

应该也可以用web服务器直接转发请求到外部某个公开的Jabber (XMPP)服务器 http-bind地址, 我没有尝试. (基本上找不到公开的提供http-bind的XMPP服务器)

使用Javascript客户端

上面ejabberd配置里开启了匿名登录(ANOYMOUS mechanism), 最终目的就是为了在web page中匿名访问服务并向任何一个XMPP帐户发送消息.

下载Strophe JS库并上传到你的域名目录下(这个库只有一个文件strophe.js), 下面这个测试例子修改自Strophe examples目录下echobot.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>Strophe.js Echobot Example</title><script type=text/javascriptsrc=http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js></script><script type=text/javascriptsrc=../strophe.js></script><script type=text/javascriptsrc=echobot.js></script></head><body><div id=login style=text-align: center><form name=cred><label for=jid>JID:</label><input type=text id=jid value=http://www.mamicode.com/"sagan.me" /><label for=pass>Password:</label><input type=password id=pass /><input type=button id=connect value=http://www.mamicode.com/connect /></form></div><hr /><div id=log></div></body></html>

看echobot.js

varBOSH_SERVICE =/xmpp-httpbind;varconnection =null;functionlog(msg){$(#log).append(<div></div>).append(document.createTextNode(msg));}functiononConnect(status){if(status== Strophe.Status.CONNECTING){log(Strophe is connecting.);}elseif(status== Strophe.Status.CONNFAIL){log(Strophe failed to connect.);$(#connect).get(0).value=http://www.mamicode.com/connect;}elseif(status== Strophe.Status.DISCONNECTING){log(Strophe is disconnecting.);}elseif(status== Strophe.Status.DISCONNECTED){log(Strophe is disconnected.);$(#connect).get(0).value=http://www.mamicode.com/connect;}elseif(status== Strophe.Status.CONNECTED){log(Strophe is connected.);log(ECHOBOT: Send a message to + connection.jid+ to talk to me.);connection.addHandler(onMessage,null,message,null,null, null);connection.send($pres().tree());varreply = $msg({to:"ono@oogami.name", from: connection.jid, type:chat}).c("body").t("Test Chat Message");connection.send(reply.tree());}}functiononMessage(msg){varto = msg.getAttribute(to);varfrom = msg.getAttribute(from);vartype = msg.getAttribute(type);varelems = msg.getElementsByTagName(body);if(type =="chat"&&elems.length>0){varbody = elems[0];log(ECHOBOT: I got a message from + from +: +Strophe.getText(body));varreply = $msg({to: from, from: to, type:chat}).cnode(Strophe.copyElement(body));connection.send(reply.tree());log(ECHOBOT: I sent + from +: + Strophe.getText(body));}// we must return true to keep the handler alive.// returning false would remove it after it finishes.returntrue;}$(document).ready(function(){connection =newStrophe.Connection(BOSH_SERVICE);// Uncomment the following lines to spy on the wire traffic.//connection.rawInput = function (data) { log(‘RECV: ‘ + data); };//connection.rawOutput = function (data) { log(‘SEND: ‘ + data); };// Uncomment the following line to see all the debug output.//Strophe.log = function (level, msg) { log(‘LOG: ‘ + msg); };$(#connect).bind(click,function(){varbutton = $(#connect).get(0);if(button.value=http://www.mamicode.com/=connect){button.value=disconnect;connection.connect($(#jid).get(0).value,$(#pass).get(0).value,onConnect);}else{button.value=connect;connection.disconnect();}});});

将ono@oogami.name修改为一个测试Jabber帐号. 然后用浏览器打开echobot.html, 点击Connect按钮, Strophe就会匿名登录到刚刚建立的ejabber服务器( sagan.me ), 并向 "ono@oogami.name"这个帐号发送一条"Test Message"的信息.

另: 测试匿名登录向somebody@gtalk.com 发送消息失败, log里显示Gtalk服务器返回信息是503 error, Service-Unavailable, 但如果正常登录并添加Gtalk为好友的话则可以. Gtalk禁止了匿名用户向其发送消息? 我还在查资料中.

我准备用Javascript写一个简单的XMPP WEB匿名客户端, 实现允许访客直接与Gtalk和Facebook Chat通信等功能

http://www.ibm.com/developerworks/cn/xml/tutorials/x-realtimeXMPPtut/index.html

Android XMPP服务器, BOSH(Http-Binding)和WEB客户端搭建