一个上好的C# http/https类
直接Copy拿去用吧:
新的 tls 协议需要新的.net版本, tls 至少更新到.net4吧,尽量用最新的.net! 不然出错了就折腾...
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.ServiceModel.Security;
using System.Net;
using System.IO;
using System.IO.Compression;
using System.Text.RegularExpressions;
namespace Lzp.Service
{
/// <summary>
/// 有关HTTP/HTTPS请求的辅助类 lzpong
/// 默认 UTF-8 编码
/// </summary>
public class HTTPS
{
public HTTPS()
{
//spt = SecurityProtocolType.Tls;
requestEncoding = Encoding.GetEncoding("UTF-8");
requestUserAgent = DefaultUserAgent;
}
/// <summary>
/// SecurityProtocolType
/// 如果https出现"基础连接..."或"ssl/tls..."错误,更改此属性; 也可能需要升级 .net 已支持更新的安全协议
/// 不指定,使之自动协商/适应, 避免指定的版本与服务器不一样反而连不上
/// </summary>
//public static SecurityProtocolType spt { get; set; }
//设置编码 默认编码是UTF-8
public static Encoding requestEncoding { get; set; }
//设置编码
public static void SetEncoding(string endcode) { requestEncoding = Encoding.GetEncoding(endcode); }
private static string requestUserAgent = DefaultUserAgent;
private static readonly string DefaultUserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
//设置浏览器版本
public static void SetUserAgent(string userAgent = null) { if (!String.IsNullOrWhiteSpace(userAgent))requestUserAgent = userAgent; else requestUserAgent = DefaultUserAgent; }
/// <summary>
/// 创建GET方式的HTTP/HTTPS请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
/// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>
/// <returns></returns>
public static HttpWebResponse CreateGet(string url, int? timeout = null, string userAgent = null, CookieCollection cookies = null)
{
return Create(url, null, "GET", requestEncoding, timeout, cookies);
}
/// <summary>
/// 创建POST方式的HTTP/HTTPS请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="datas">随同请求POST的数据</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
/// <param name="headers">随同HTTP请求发送的headers信息，如Cookie等</param>
/// <returns></returns>
public static HttpWebResponse CreatePost(string url, string datas= null, int? timeout = null, string headers = null)
{
return Create(url, datas, "POST", requestEncoding, timeout, headers);
}
/// <summary>
/// 创建HTTP/HTTPS请求
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="datas">随同请求POST的参数名称及参数值字典</param>
/// <param name="timeout">请求的超时时间</param>
/// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>
/// <param name="requestEncoding">发送HTTP请求时所用的编码</param>
/// <param name="headers">随同HTTP请求发送的headers信息，如Cookie等</param>
/// <param name="AllowAutoRedirect">请求应自动跟随 Internet 资源的重定向响应，则为 true，否则为 false。默认值为 true。</param>
/// <returns></returns>
public static HttpWebResponse Create(string url, string datas=null, string method = "GET", Encoding requestEncoding = null, int? timeout = null, string headers= null, bool AllowAutoRedirect=true)
{
if (string.IsNullOrEmpty(url))
throw new ArgumentNullException("url");
if (requestEncoding == null)
requestEncoding=Encoding.GetEncoding("UTF-8");
HttpWebRequest request = null;
//如果是发送HTTPS请求
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
//ServicePointManager.SecurityProtocol = spt; //不指定,使之自动协商/适应, 避免指定的版本与服务器不一样反而连不上
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request = WebRequest.Create(url) as HttpWebRequest;
request.ProtocolVersion = HttpVersion.Version10;
}
else
request = WebRequest.Create(url) as HttpWebRequest;
request.Method = method;
request.UserAgent = requestUserAgent;
request.AllowAutoRedirect = AllowAutoRedirect;
if (timeout.HasValue)
request.Timeout = timeout.Value;
if (!string.IsNullOrWhiteSpace(headers))
{
string[] arr1 = headers.Split(new string[]{ "\r\n" },StringSplitOptions.RemoveEmptyEntries);
foreach(string s in arr1)
{
string[] arr2=s.Split(new string[]{ ": " }, StringSplitOptions.RemoveEmptyEntries);
if (arr2[0] == "Referer")
request.Referer = arr2[1];
else if (arr2[0] == "User-Agent")
request.UserAgent = arr2[1];
else if (arr2[0] == "Accept")
request.Accept = arr2[1];
else if (arr2[0] == "Range")
{
string[] arr3 = arr2[1].Split('-');
long f = long.Parse(arr3[0]);
long t = 0;
if(arr3.Length>1)
t=long.Parse(arr3[1]);
if (t < f)
request.AddRange(f, t);
else
request.AddRange(f);
}
else
request.Headers.Add(arr2[0], arr2[1]);
}
}
//如果需要POST数据
if (method == "POST")
{
request.ContentType = "application/x-www-form-urlencoded";
if (!String.IsNullOrWhiteSpace(datas))
{
byte[] data = requestEncoding.GetBytes(datas);
using (Stream stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
}
}
return request.GetResponse() as HttpWebResponse;
}
private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
return true; //总是接受
}
/// <summary>
/// GET 方法请求 获取文本内容
/// </summary>
/// <param name="url">请求的URL</param>
/// <param name="headers">随同HTTP请求发送的headers信息，如Cookie等</param>
///
public static string Get(string url,string heads=null,string encoding=null)
{
HttpWebResponse rq = HTTP.Create("GET", url, null, null, null, heads);
Stream rs = rq.GetResponseStream();
int bt;
MemoryStream mm = new MemoryStream(128);
while ((bt = rs.ReadByte()) > -1)
{
mm.WriteByte((byte)bt);
}
string data = Encoding.UTF8.GetString(mm.GetBuffer());//默认 utf8 编码
if (rq.ContentType.IndexOf("html") > -1) //网页内容
{
int n = data.IndexOf("content-type");
if (n > 0)
{//
n = data.IndexOf("charset", n);
if (n > 0) //去网页内部指明的编码
{
int m = data.IndexOf("\"", n + 1);
n = data.IndexOf("=", n) + 1;
string c = data.Substring(n, m - n).Trim();
data = Encoding.GetEncoding(c).GetString(mm.GetBuffer());
}
}
}
else if (!string.IsNullOrWhiteSpace(rq.CharacterSet) && rq.ContentType.IndexOf(';') > 0) //非网页
{
data = Encoding.GetEncoding(rq.CharacterSet).GetString(mm.GetBuffer());
}
return data.Replace("\0", "");//要去掉末尾的'\0'
}
}
}
当然,有从网上搜罗的, 但是也是自己改装优化过的,so 还是我的咯
转载应注明http://home.cnblogs.com/u/lzpong/
--- auth:lzpong
