问题描述
尝试实施谷歌 Recaptcha,在本地运行良好。但是当部署到其他服务器(通过八达通)时,它会抛出异常。无法找到原因。发生在 PostAsync 调用上。请需要帮助。
using (HttpClient client = new HttpClient())
{
System.Net.ServicePointManager.SecurityProtocol = System.Net.ServicePointManager.SecurityProtocol | System.Net.SecurityProtocolType.Tls12;
client.Timeout = TimeSpan.FromMilliseconds(this.ValidationTimeoutMiliseconds);
var values = new Dictionary<string,string>
{
{ "secret",Secret },{ "response",value as string }
};
LogHelper.WriteLog("Start: Recaptcha requestdata is about to post to google...");
var response = client.PostAsync("https://www.google.com/recaptcha/api/siteverify",new FormUrlEncodedContent(values)).GetAwaiter().GetResult();
LogHelper.WriteLog("End: Recaptcha requestdata is posted successfully");
var responseString = response.Content.ReadAsstringAsync().Result;
var responseModel = JsonConvert.DeserializeObject<GRecaptchaValidationResponseModel>(responseString);
if (responseModel.ErrorCodes != null && responseModel.ErrorCodes.Contains("invalid-input-secret"))
LogHelper.WriteLogAsync("Invalid input secret for reCaptcha. Please configure in advanced settings parameters for Forms.");
return responseModel.Success;
}
抛出异常: 发布到 google recaptcha 时发生异常:System.Net.WebException:底层连接已关闭:发送时发生意外错误。 ---> System.IO.IOException: 无法从传输连接读取数据:远程主机强行关闭了现有连接。 ---> System.Net.sockets.socketException: 一个现有的连接被远程主机强行关闭 在 System.Net.sockets.socket.EndReceive(IAsyncResult asyncResult) 在 System.Net.sockets.NetworkStream.EndRead(IAsyncResult asyncResult) --- 内部异常堆栈跟踪结束 --- 在 System.Net.Tlsstream.EndWrite(IAsyncResult asyncResult) 在 System.Net.ConnectStream.WriteHeadersCallback(IAsyncResult ar) --- 内部异常堆栈跟踪结束 --- 在 System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult,TransportContext& context) 在 System.Net.Http.httpclienthandler.GetRequestStreamCallback(IAsyncResult ar)
解决方法
谢谢 已解决,服务器中存在防火墙问题阻止。解决后,工作正常。