ibrowser ################# :: ibrowse有两种许可证:LGPL或BSD license % 启动app 5> ibrowse:start(). 发送一个json类型的html請求:: erl>>ibrowse:send_req("http://", [{"Accept","application/json"}], get, [], []). 注意: url地址必须以 ``http://`` 开头用 ``{"Accept", "application/json"}`` 来表示json类型的請求,默认是 ``text/html`` 类型实例:: ibrowse:send_req("http://", [{"Accept","application/json"}], post, ["{\"id\":\"1234567890\", \"timestamp\":\"23421321421532143\"}"], []). * 一个简单的get应用:: 6> ibrowse:send_req("http://intranet/messenger/", [], get). {ok,"200", [{"Server","Microsoft-IIS/5.0"}, {"Content-Location","http://intranet/messenger/index.html"}, {"Date","Fri, 17 Dec 2004 15:16:19 GMT"}, {"Content-Type","text/html"}, {"Accept-Ranges","bytes"}, {"Last-Modified","Fri, 17 Dec 2004 08:38:21 GMT"}, {"Etag","\"aa7c9dc313e4c41:d77\""}, {"Content-Length","953"}], "\r\n\r\n\r\nMessenger......" } * 一个代理的get应用:: 7> ibrowse:send_req("http://www.google.com/", [], get, [], [{proxy_user, "XXXXX"}, {proxy_password, "XXXXX"}, {proxy_host, "proxy"}, {proxy_port, 8080}], 1000 ). {ok,"302", [{"Date","Fri, 17 Dec 2004 15:22:56 GMT"}, {"Content-Length","217"}, {"Content-Type","text/html"}, {"Set-Cookie", "PREF=ID=f58155c797f96096; expires=Sun, 17-Jan-2038 19:14:07 GMT;"}, {"Server","GWS/2.1"}, {"Location", "http://www.google.co.uk/cxfer?c=PREF%3D:TM%3D1103296999:S%3Do8bEY2FIHwdyGenS&prev=/"}, {"Via","1.1 netapp01 (NetCache NetApp/5.5R2)"}], "302 Moved\n

302 Moved

\r\n\r\n"} * 把get請求后的結果存放到文件中:: 创建一个临时文件, 返回这个刚创建的临时文件的文件名只有返回状态是200区间的才把請求的結果写入到这个临时文件中下载的目录可以用应用环境变量 `download_dir` ,默认是当前工作目录 8> ibrowse:send_req("http://www.747.cn/", [], get, [], [{save_response_to_file, true}], 1000). {ok,"200", [{"Server","nginx/0.8.46"}, {"Date","Thu, 01 Mar 2012 10:10:40 GMT"}, {"Content-Type","text/html"}, {"Content-Length","3796"}, {"Last-Modified","Mon, 27 Feb 2012 11:20:36 GMT"}, {"Connection","keep-alive"}, {"Vary","Accept-Encoding"}, {"Accept-Ranges","bytes"}], {file,"/home/gordon/tmp/ibrowser_test/ibrowse_tmp_file_1330597007674127"}} * 设置连接池与管道大小,下面这个例子設定连接到服务的最大连接数到10,并把管道大小设置为1:: Connections are setup a required 11> ibrowse:set_dest("www.hotmail.com", 80, [{max_sessions, 10}, {max_pipeline_size, 1}]). ok * 使用HEAD方法的实例:: 56> ibrowse:send_req("http://www.erlang.org", [], head). {ok,"200", [{"Date","Mon, 28 Feb 2005 04:40:53 GMT"}, {"Server","Apache/1.3.9 (Unix)"}, {"Last-Modified","Thu, 10 Feb 2005 09:31:23 GMT"}, {"Etag","\"8d71d-1efa-420b29eb\""}, {"Accept-ranges","bytes"}, {"Content-Length","7930"}, {"Content-Type","text/html"}], []} * 使用OPTIONS方法的实例:: 62> ibrowse:send_req("http://www.sun.com", [], options). {ok,"200", [{"Server","Sun Java System Web Server 6.1"}, {"Date","Mon, 28 Feb 2005 04:44:39 GMT"}, {"Content-Length","0"}, {"P3p", "policyref=\"http://www.sun.com/p3p/Sun_P3P_Policy.xml\", CP=\"CAO DSP COR CUR ADMa DEVa TAIa PSAa PSDa CONi TELi OUR SAMi PUBi IND PHY ONL PUR COM NAV INT DEM CNT STA POL PRE GOV\""}, {"Set-Cookie", "SUN_ID=X.X.X.X:169191109565879; EXPIRES=Wednesday, 31-Dec-2025 23:59:59 GMT; DOMAIN=.sun.com; PATH=/"}, {"Allow", "HEAD, GET, PUT, POST, DELETE, TRACE, OPTIONS, MOVE, INDEX, MKDIR, RMDIR"}], []} * 使用Asynchronous請求的实例:: 18> ibrowse:send_req("http://www.google.com", [], get, [], [{stream_to, self()}]). {ibrowse_req_id,{1115,327256,389608}} 19> flush(). ... ... * 用async选项請求失败的实例:: 这儿没有返回 {ibrowse_req_id, ReqId}格式，而是返回错误代码: 68> ibrowse:send_req("http://www.earlyriser.org", [], get, [], [{stream_to, self()}]). {error,conn_failed} * 即有代理又有用户认证的实例:: 17> ibrowse:send_req("http://www.erlang.se/lic_area/protected/patches/erl_756_otp_beam.README", [], get, [], [{proxy_user, "XXXXX"}, {proxy_password, "XXXXX"}, {proxy_host, "proxy"}, {proxy_port, 8080}, {basic_auth, {"XXXXX", "XXXXXX"}}]). ... ... ibrowse是一个HTTP客户端,下面是ibrowse的特性:: - RFC2616 compliant (AFAIK) - 支持 GET, POST, OPTIONS, HEAD, PUT, DELETE, TRACE, MKCOL, PROPFIND, PROPPATCH, LOCK, UNLOCK, MOVE and COPY - 支持 HTTP/0.9, HTTP/1.0 and HTTP/1.1 - 支持 chunked encoding - Can generate requests using Chunked Transfer-Encoding - Pools of connections to each webserver - Pipelining support - 下载到文件 - Asynchronous requests. Responses are streamed to a process - 基本的认证 - 支持代理认证 - 可以用SSL与安全webservers交互 - 其他特性