作者： zyl910
最近有读者反馈“部分网站打不开”。于是我修正了这一问题，发布了v1.2.1版。
一、变更说明
v1.2.1的变更说明——
- 解决了部分网站无法打开的问题. 改进 TLS 的版本兼容性.
- 忽略HTTPS证书检查, 用于支持证书无效的网站.
二、使用介绍
用法与先前版本相同.
例如可以用它访问“https://www.weather.com.cn”。
浏览器的“开发者工具”中的“Privacy and security”标签页中，可以查看TLS协议的版本。例如上图中，可以看到该网站用的是“TLS 1.3”。
官方在“.NET Framework 中的传输层安全性 (TLS) 最佳做法”文档里提到，.NET Framework 程序在 Windows 11操作系统上运行时才支持“TLS 1.3”；而在Windows 10或更早的操作系统上运行时，最高仅支持“TLS 1.2”。
三、全部代码
窗口的代码（FrmTestHttpPost.cs）——
////////////////////////////////////////////////////////////
// FrmTestHttpPost.cs: 测试Http的POST方法.
// Author: zyl910
// Blog: http://www.cnblogs.com/zyl910
// URL: http://www.cnblogs.com/zyl910/archive/2012/09/19/TestHttpPost.html
// Version: V1.2.1
// Updata: 2025-07-15
//
////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.IO.Pipes;
using System.Net;
using System.Net.Cache;
using System.Net.Security;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace TestHttpPost
{
public partial class FrmTestHttpPost : Form
{
private EncodingInfo[] _Encodings = null; // 编码集合.
private Encoding _ResEncoding = null; // 回应的编码.
private bool _OutputFileAllow = false; // 允许输出文件.
private string _OutputFilePath = null; // 输出文件的路径.
private string[] _HeaderLines = null; // 请求头的行列表.
public FrmTestHttpPost()
{
int securityProtocol = 16368; // SSLv3 ~ TSLv1.3. 48 + 192 + 768 + 3072 + 12288 = 16368
ServicePointManager.SecurityProtocol = (SecurityProtocolType)securityProtocol;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(delegate {
return true;//https请求 忽略证书，可以直接访问
});
InitializeComponent();
}
/// <summary>
/// 根据BodyName创建Encoding对象。
/// </summary>
/// <param name="bodyname">与邮件代理正文标记一起使用的当前编码的名称。</param>
/// <returns>返回Encoding对象。若没有匹配的BodyName，便返回null。</returns>
public static Encoding Encoding_FromBodyName(string bodyname)
{
if (string.IsNullOrEmpty(bodyname)) return null;
try
{
foreach (EncodingInfo ei in Encoding.GetEncodings())
{
Encoding e = ei.GetEncoding();
if (0 == string.Compare(bodyname, e.BodyName, true))
{
return e;
}
}
}
catch
{
}
return null;
}
/// <summary>
/// 输出日志文本.
/// </summary>
/// <param name="s">日志文本</param>
private void OutLog(string s)
{
txtLog.Invoke(new Action<string>(p =>
{
txtLog.AppendText(p + Environment.NewLine);
txtLog.ScrollToCaret();
}), s);
}
private void OutLog(string format, params object[] args)
{
OutLog(string.Format(format, args));
}
private void HttpReq(Encoding myEncoding, string sMode, string sUrl, string sContentType, string sPostData, bool bVerbose)
{
HttpWebRequest req;
// == main ==
if (bVerbose) OutLog(string.Format("{3}: {0} {1} {2}", sMode, sUrl, sPostData, DateTime.Now.ToString("g")));
try
{
bool showRequestHeader = false;
// init
req = HttpWebRequest.Create(sMode == "GET" ? sUrl + sPostData : sUrl) as HttpWebRequest;
req.Method = sMode;
req.Accept = "*/*";
req.KeepAlive = false;
req.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
string[] headerLines = _HeaderLines;
if (null != headerLines && headerLines.Length > 0) {
var headers = req.Headers;
// Set.
showRequestHeader = true;
foreach(string line in headerLines) {
if (string.IsNullOrEmpty(line)) continue;
int pos = line.IndexOf(':');
if (pos <= 0) continue;
string key = line.Substring(0, pos).Trim();
string value = line.Substring(pos + 1).Trim();
if (string.IsNullOrEmpty(key)) continue;
headers[key] = value;
}
}
if (0 == string.Compare("POST", sMode))
{
byte[] bufPost = myEncoding.GetBytes(sPostData);
req.ContentType = sContentType;
req.ContentLength = bufPost.Length;
Stream newStream = req.GetRequestStream();
newStream.Write(bufPost, 0, bufPost.Length);
newStream.Close();
}
if (showRequestHeader) {
var headers = req.Headers;
// Output RequestHeader
OutLog(".\t#RequestHeader:");
for (int i = 0; i < headers.Count; ++i) {
OutLog("[{2}] {0}:\t{1}", headers.Keys[i], headers[i], i);
}
}
// Response
HttpWebResponse res = req.GetResponse() as HttpWebResponse;
try
{
if (bVerbose)
{
OutLog("Response.ContentLength:\t{0}", res.ContentLength);
OutLog("Response.ContentType:\t{0}", res.ContentType);
OutLog("Response.CharacterSet:\t{0}", res.CharacterSet);
OutLog("Response.ContentEncoding:\t{0}", res.ContentEncoding);
OutLog("Response.IsFromCache:\t{0}", res.IsFromCache);
OutLog("Response.IsMutuallyAuthenticated:\t{0}", res.IsMutuallyAuthenticated);
OutLog("Response.LastModified:\t{0}", res.LastModified);
OutLog("Response.Method:\t{0}", res.Method);
OutLog("Response.ProtocolVersion:\t{0}", res.ProtocolVersion);
OutLog("Response.ResponseUri:\t{0}", res.ResponseUri);
OutLog("Response.Server:\t{0}", res.Server);
OutLog("Response.StatusCode:\t{0}\t# {1}", res.StatusCode, (int)res.StatusCode);
OutLog("Response.StatusDescription:\t{0}", res.StatusDescription);
// header
OutLog(".\t#ResponseHeader:"); // 头.
for (int i = 0; i < res.Headers.Count; ++i)
{
OutLog("[{2}] {0}:\t{1}", res.Headers.Keys[i], res.Headers[i], i);
}
}
// 找到合适的编码
Encoding encoding = null;
//encoding = Encoding_FromBodyName(res.CharacterSet); // 后来发现主体部分的字符集与Response.CharacterSet不同.
//if (null == encoding) encoding = myEncoding;
encoding = _ResEncoding;
System.Diagnostics.Debug.WriteLine(encoding);
// body
if (bVerbose) OutLog(".\t#Body:"); // 主体.
using (Stream resStreamRaw = res.GetResponseStream())
{
Stream resStream = resStreamRaw;
if (_OutputFileAllow) {
MemoryStream memoryStream = new MemoryStream();
resStreamRaw.CopyTo(memoryStream);
OutLog(string.Format("Byte size: {0} // 0x{0:X}", memoryStream.Length));
if (!string.IsNullOrEmpty(_OutputFilePath)) {
string fullPath = Path.GetFullPath(_OutputFilePath);
memoryStream.Position = 0;
try {
File.WriteAllBytes(fullPath, memoryStream.GetBuffer());
OutLog(string.Format("Output file OK. {0}", fullPath));
} catch (Exception ex1) {
OutLog(string.Format("Output file fail! {0}", fullPath));
OutLog(ex1.ToString());
}
}
// next.
memoryStream.Position = 0;
resStream = memoryStream;
}
using (StreamReader resStreamReader = new StreamReader(resStream, encoding))
{
OutLog(resStreamReader.ReadToEnd());
}
}
if (bVerbose) OutLog(".\t#OK."); // 成功.
}
finally
{
res.Close();
}
}
catch (Exception ex)
{
OutLog(ex.ToString());
}
OutLog(string.Empty);
}
private void FrmTestHttpPost_Load(object sender, EventArgs e)
{
// Http方法
cboMode.SelectedIndex = 1; // POST
cboContentType.SelectedIndex = 0; // json
// 回应的编码
cboResEncoding.Items.Clear();
_Encodings = Encoding.GetEncodings();
cboResEncoding.DataSource = _Encodings;
cboResEncoding.DisplayMember = "DisplayName";
_ResEncoding = Encoding.UTF8;
cboResEncoding.SelectedIndex = cboResEncoding.FindStringExact(_ResEncoding.EncodingName);
}
private void btnGo_Click(object sender, EventArgs e)
{
Encoding myEncoding = Encoding.UTF8;
string sMode = (string)cboMode.SelectedItem;
string sUrl = txtUrl.Text;
string sPostData = txtPostData.Text;
string sContentType = cboContentType.SelectedItem.ToString(); // "application/x-www-form-urlencoded";
TextReader read = new System.IO.StringReader(sPostData);
_OutputFileAllow = chkOutputFile.Checked;
_OutputFilePath = txtOutputFile.Text.Trim();
if (_OutputFileAllow && string.IsNullOrEmpty(_OutputFilePath)) {
MessageBox.Show("The OutputFile textbox is empty!", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Stop);
return;
}
_HeaderLines = null;
if (chkHeader.Checked) {
_HeaderLines = txtHeader.Lines;
}
// Log Length
//if (txtLog.Lines.Length > 3000) txtLog.Clear();
if (checkBox1.Checked)
{
Task.Run(() =>
{
do
{
if (string.IsNullOrWhiteSpace(sUrl))
break;
sPostData = read.ReadLine();
if (string.IsNullOrWhiteSpace(sPostData))
break;
// == main ==
HttpReq(myEncoding, sMode, sUrl, sContentType, sPostData, checkBox2.Checked);
Thread.Sleep((int)numericUpDown1.Value);
} while (!string.IsNullOrWhiteSpace(sPostData));
});
}
else
{
// == main ==
HttpReq(myEncoding, sMode, sUrl, sContentType, sPostData, checkBox2.Checked);
}
}
private void cboResEncoding_SelectedIndexChanged(object sender, EventArgs e)
{
EncodingInfo ei = cboResEncoding.SelectedItem as EncodingInfo;
if (null == ei) return;
_ResEncoding = ei.GetEncoding();
}
private void button1_Click(object sender, EventArgs e)
{
txtLog.Clear();
}
}
}
源码: https://github.com/zyl910/TestHttpPost
程序下载: https://github.com/zyl910/TestHttpPost/releases/tag/v1.2.1
参考文献
- microsoft《HttpWebRequest 类》. https://learn.microsoft.com/zh-cn/dotnet/api/system.net.httpwebrequest?view=netframework-4.5
- microsoft《.NET Framework 中的传输层安全性 (TLS) 最佳做法》. https://learn.microsoft.com/zh-cn/dotnet/framework/network-programming/tls
- zyl910《[C#] TestHttpPost：测试Http的POST方法的小工具》. https://www.cnblogs.com/zyl910/archive/2012/09/19/TestHttpPost.html
京ICP备14020293号-4