c# https请求

 

private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
return true; //总是接受
}

public static string PostHttpsUrl(string url, string postData, string key)
{
HttpWebRequest request = null;
if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
{
request = WebRequest.Create(url) as HttpWebRequest;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
request.ProtocolVersion = HttpVersion.Version11;
// 这里设置了协议类型。
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;// SecurityProtocolType.Tls1.2;
request.KeepAlive = false;
ServicePointManager.CheckCertificateRevocationList = true;
ServicePointManager.DefaultConnectionLimit = 100;
ServicePointManager.Expect100Continue = false;
}
else
{
request = (HttpWebRequest)WebRequest.Create(url);
}

request.Method = "POST"; //使用get方式发送数据
request.ContentType = "application/json;charset=utf-8";
request.Headers.Add("appToken", key);
request.Referer = null;
request.AllowAutoRedirect = true;
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
request.Accept = "*/*";

byte[] data = Encoding.UTF8.GetBytes(postData);
Stream newStream = request.GetRequestStream();
newStream.Write(data, 0, data.Length);
newStream.Close();

//获取网页响应结果
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream stream = response.GetResponseStream();
string result = string.Empty;
using (StreamReader sr = new StreamReader(stream))
{
result = sr.ReadToEnd();
}

return result;
}