C # Implementation HTTP protocol support upload download file get, POST request
Using System; Using System.Collections.Generic; Using System.Text; Using System.Net; Using System.Net.Sockets; Using System.Collections; Using System.IO; Using System.Text.RegularExpressions; Using RE = System.Text.RegularExpressions.Regex; Using System.Security.Cryptography.X509Certificates; /******************************************************************************************************** * * FileName: HttpProc.cs * * Creator: Hedaode * * Day Period: 2007.09.01 * * Tracing Description: Implementing GET, POST request in HTTP protocol * * : httpproc.webclient client = new Httpproc.webclient (); client. Encoding = system.text.encoding.default;//default encoding, set other types as needed client. OpenRead ("http://www.baidu.com");/General GET request MessageBox.Show (client. resphtml);//Get ReturnBack to the Web page source code client. DownloadFile ("Http://www.loopc.com/upload/163album.rar", @ "C:/163album.rar");//download file client. OpenRead ("Http://passport.baidu.com/?login", "username=zhangsan&password=123456")//Submit form, here is an example of login to Baidu client. UploadFile ("Http://hiup.baidu.com/zhangsan/upload", @ "File1=d:/1.mp3");//Upload file client. UploadFile ("Http://hiup.baidu.com/zhangsan/upload", "folder=myfolder&size=4003550", @ "File1=d:/1.mp3"); Submit forms with text fields and file fields ************************************************************************************************** / namespace Httpproc { ///<summary > ///Upload event delegate ///</summary> /<param name= "Sender" ></param> ///<param name= "E" ></param> Public delegate void Webclientuploadevent (object sender, Httpproc.uploadeventargs e); ///<summary> ///Download event delegate ///</summary> ///<param name= "sender" ></param> ///<param name= "E" ></ param> public delegate void Webclientdownloadevent (object sender, Httpproc.downloadeventargs e); ///<summary> ///upload event parameter ///</summary > public struct Uploadeventargs { <summary> ///upload data total size ///</summary> public long totalbytes; ///<summary> ///data size ///</summary> Public long BytesSent; ///<summary> ///Send Progress ( 0-1) ///</summary> public double sendprogress; ///<summary> /// Send Speed bytes/s ///</summary> public double sendspeed; ///<summary> ///Download event parameters ///& lt;/summary> public struct Downloadeventargs { ///<summary> ///Download Data total size /// </summary> public long totalbytes; ///<summary> /// Received data size ///</summary> public long bytesreceived; ///<summary> /// Receive data Progress (0-1) ///</summary> public double receiveprogress; ///<summary> /// Current buffer data ///</summary> Public byte[] Receivedbuffer; <summary> ///receiving speed bytes/s ///</summary> public double receivespeed; } ///<summary> ///Implementation send and receive data to Web server ///</summary> public class WebClient { private webheadercollection requestheaders, responseheaders; private TcpClient Clientsocket; private MemoryStream Poststream; private Encoding Encoding = Encoding.default; Private Const string boundary = "--hedaode--"; Private Const int send_buffer_size = 10245; Private Const inT receive_buffer_size = 10245; private String cookie = ""; private String resphtml = ""; private String strrequestheaders = ""; private String strresponseheaders = ""; private int statusCode = 0; private bool iscanceled = false; public event Webclientuploadevent uploadprogresschanged; public event Webclientdownloadevent downloadprogresschanged; ///<summary> // /initialization of WebClient ///</summary> public WebClient () {&NBSP;&NBsp; responseheaders = new WebHeaderCollection (); requestheaders = new WebHeaderCollection (); } ///< Summary> ///reads the text of the specified URL // /</summary> ///<param name= "URL" > Requested address </param> ///<returns> Server response text </returns> public String OpenRead (string URL) { Requestheaders.add ("Connection", "close"); Sendrequestdata (URL, "get"); return gethtml (); } // Troubleshoot issues that cannot be accessed by certificate expiration class Certpolicy:icertificatepolicy { public bool CheckValidationResult (ServicePoint srvpt, X509Certificate cert, WebRequest req, int certprb) & nbsp; {return true;} } & nbsp; ///<summary> /// Use HTTPS protocol to access network ///</summary> ///<param name= "URL" >url address </param> ///<param name= "Strpostdata" > Data sent </param> ///<returns></returns> public string Openreadwithhttps (String url,string strpostdata) { servicepointmanager.certificatepolicy = new Certpolicy (); HttpWebRequest request = (HttpWebRequest) WebRequest.Create (URL); request. Cookiecontainer = new Cookiecontainer (); request. method = "POST"; request. Accept = "*/*"; request. Contenttype= "application/x-www-form-urlencoded"; byte[] buffer = this.encoding.GetBytes (StrpoStdata);
