C# WebRequest 请求HTTPS 基础连接已关闭：发送时发生错误，远程主机强迫关闭了一个现有有连接
作者：互联网
internal static class SendRequest
{
private static string GetBody(Dictionary<string, string> senddata)
{
if (senddata == null)
{
senddata = new Dictionary<string, string>();
}
StringBuilder buffer = new StringBuilder();
int i = 0;
foreach (string k in senddata.Keys)
{
if (i > 0)
{
buffer.AppendFormat("&{0}={1}", k, senddata[k]);
}
else
{
buffer.AppendFormat("{0}={1}", k, senddata[k]);
}
i++;
}
string bodys = buffer.ToString();
return bodys;
}
public static string Send(string url, Dictionary<string, string> headerdata, Dictionary<string, string> senddata)
{
return Send(url, "POST", headerdata, senddata, "application/x-www-form-urlencoded;charset=UTF-8");
}
public static string Send(string url, string method, Dictionary<string, string> headerdata, Dictionary<string, string> senddata)
{
return Send(url, method, headerdata, senddata, "application/x-www-form-urlencoded;charset=UTF-8");
}
public static string Send(string url, string method, Dictionary<string, string> headerdata, Dictionary<string, string> senddata, string contentType)
{
string bodys = GetBody(senddata);
//new internalErrorLog(new Exception(), "SendBody:" + bodys);
HttpWebRequest httpRequest = null;
HttpWebResponse httpResponse = null;
if (url.Contains("https://"))
{
//ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
/*
请求某些接口一直返回基础连接已关闭：发送时发生错误
远程主机强迫关闭了一个现有的连接
*/
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
ServicePointManager.Expect100Continue = false;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
httpRequest.ProtocolVersion = HttpVersion.Version10;
}
else
{
httpRequest = (HttpWebRequest)WebRequest.Create(url);
}
httpRequest.Proxy = null;
httpRequest.Method = method;
foreach (string k in headerdata.Keys)
{
httpRequest.Headers.Add(k, headerdata[k]);
}
//new internalErrorLog(new Exception(), "SendHeader:" + Newtonsoft.Json.JsonConvert.SerializeObject(headerdata));
//根据API的要求，定义相对应的Content-Type
httpRequest.ContentType = contentType;
if (0 < bodys.Length)
{
byte[] data = Encoding.UTF8.GetBytes(bodys);
using (Stream stream = httpRequest.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
}
try
{
httpRequest.ServicePoint.Expect100Continue = false;
httpResponse = (HttpWebResponse)httpRequest.GetResponse();
Stream st = httpResponse.GetResponseStream();
StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
string json = reader.ReadToEnd();
return json;
}
catch (WebException ex)
{
new internalErrorLog(ex, "请求URL:" + url);
httpResponse = (HttpWebResponse)ex.Response;
return ex.Message;
}
}
private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)
{
return true;
}
public static string SendGet(string url, Dictionary<string, string> headerdata)
{
HttpWebRequest httpRequest = null;
HttpWebResponse httpResponse = null;
if (url.Contains("https://"))
{
ServicePointManager.SecurityProtocol =(SecurityProtocolType)3072;
ServicePointManager.Expect100Continue = false;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
httpRequest.ProtocolVersion = HttpVersion.Version10;
}
else
{
httpRequest = (HttpWebRequest)WebRequest.Create(url);
}
httpRequest.Proxy = null;
httpRequest.Method = "Get";
httpRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
foreach (string k in headerdata.Keys)
{
httpRequest.Headers.Add(k, headerdata[k]);
}
try
{
httpResponse = (HttpWebResponse)httpRequest.GetResponse();
Stream st = httpResponse.GetResponseStream();
StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
string json = reader.ReadToEnd();
return json;
}
catch (WebException ex)
{
httpResponse = (HttpWebResponse)ex.Response;
return ex.Message;
}
}
public static string SendJSON(string url, JObject objdata)
{
string jsondata = objdata.ToString();
return SendJSON(url, jsondata);
}
public static string SendJSON(string url, string jsondata)
{
HttpWebRequest httpRequest = null;
HttpWebResponse httpResponse = null;
if (url.Contains("https://"))
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls;
ServicePointManager.Expect100Continue = false;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
httpRequest.ProtocolVersion = HttpVersion.Version10;
httpRequest.KeepAlive = false;
ServicePointManager.DefaultConnectionLimit = 500;
}
else
{
httpRequest = (HttpWebRequest)WebRequest.Create(url);
}
httpRequest.Proxy = null;
httpRequest.Method = "POST";
httpRequest.ContentType = "application/json";
//WebClient.UploadString("", jsondata);
try
{
httpRequest.ServicePoint.Expect100Continue = false;
byte[] buffer = Encoding.UTF8.GetBytes(jsondata);
//new internalErrorLog(new Exception(jsondata));
httpRequest.ContentLength = buffer.Length;
httpRequest.GetRequestStream().Write(buffer, 0, buffer.Length);
httpResponse = (HttpWebResponse)httpRequest.GetResponse();
Stream st = httpResponse.GetResponseStream();
StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
string json = reader.ReadToEnd();
return json;
}
catch (WebException ex)
{
new internalErrorLog(ex, "发送地址:" + url);
httpResponse = (HttpWebResponse)ex.Response;
return ex.Message;
}
}
public static string SendJSON(string url, Dictionary<string, string> header, string jsondata)
{
HttpWebRequest httpRequest = null;
HttpWebResponse httpResponse = null;
if (url.Contains("https://"))
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls;
ServicePointManager.Expect100Continue = false;
ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);
httpRequest = (HttpWebRequest)WebRequest.CreateDefault(new Uri(url));
}
else
{
httpRequest = (HttpWebRequest)WebRequest.Create(url);
}
httpRequest.Method = "POST";
httpRequest.ContentType = "application/json";
foreach (string k in header.Keys)
{
httpRequest.Headers.Add(k, header[k]);
}
//WebClient.UploadString("", jsondata);
try
{
httpRequest.ServicePoint.Expect100Continue = false;
byte[] buffer = Encoding.UTF8.GetBytes(jsondata);
new internalErrorLog(new Exception(jsondata));
httpRequest.ContentLength = buffer.Length;
httpRequest.GetRequestStream().Write(buffer, 0, buffer.Length);
httpResponse = (HttpWebResponse)httpRequest.GetResponse();
Stream st = httpResponse.GetResponseStream();
StreamReader reader = new StreamReader(st, Encoding.GetEncoding("utf-8"));
string json = reader.ReadToEnd();
return json;
}
catch (WebException ex)
{
httpResponse = (HttpWebResponse)ex.Response;
return ex.Message;
}
}
public static string Submit(string url, Hashtable ht, string type)
{
return Submit(url, ht, type, Encoding.Default);
}
public static string Submit(string url, NameValueCollection ht, string type)
{
return Submit(url, ht, type, Encoding.Default);
}
public static string Submit(string url, Hashtable ht, string type, Encoding encoding)
{
IDictionaryEnumerator enumerator = ht.GetEnumerator();
NameValueCollection keyValue = new NameValueCollection();
while (enumerator.MoveNext())
{
keyValue.Add(enumerator.Key.ToString(), (enumerator.Value == null) ? "" : enumerator.Value.ToString());
}
return Submit(url, keyValue, type, encoding);
}
private static string Submit(string url, NameValueCollection keyValue, string type, Encoding encoding)
{
string str = string.Empty;
WebClient client = new WebClient();
try
{
byte[] bytes = client.UploadValues(url, type.ToString(), keyValue);
str = encoding.GetString(bytes);
}
catch (Exception exception)
{
throw exception;
}
finally
{
client.Dispose();
}
return str;
}
}
标签：httpRequest,return,string,C#,url,关闭,httpResponse,new,连接 来源： https://www.cnblogs.com/gxivwshjj/p/16378137.html