2

尝试通过 HTTPS 发布一些数据时，我会间歇性地收到此异常。在单声道 2.10.1（现在更改为 2.10.9）上运行。我不知道为什么会发生这种情况，它似乎与请求大小（大约 2.5MB）无关，因为其他类似大小的请求正在工作。

// these arguments are not null, as I can see them in a log.
var response1 = web1.UploadData(address, "POST", buffer);

堆栈跟踪单声道 2.10.1：

System.Net.WebException: An error occurred performing a WebClient request. ---> System.IO.IOException: IO exception during Write. ---> System.NullReferenceException: Object reference not set to an instance of an object
  at Mono.Security.Protocol.Tls.SslStreamBase.InternalBeginWrite (Mono.Security.Protocol.Tls.InternalAsyncResult asyncResult) [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at Mono.Security.Protocol.Tls.SslStreamBase.InternalBeginWrite (Mono.Security.Protocol.Tls.InternalAsyncResult asyncResult) [0x00000] in <filename unknown>:0 
  at Mono.Security.Protocol.Tls.SslStreamBase.BeginWrite (System.Byte[] buffer, Int32 offset, Int32 count, System.AsyncCallback callback, System.Object state) [0x00000] in <filename unknown>:0 
  at System.Net.WebConnection.BeginWrite (System.Net.HttpWebRequest request, System.Byte[] buffer, Int32 offset, Int32 size, System.AsyncCallback cb, System.Object state) [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Net.WebClient.UploadData (System.Uri address, System.String method, System.Byte[] data) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Net.WebClient:UploadData (System.Uri,string,byte[])

使用单声道 2.10.9 我得到一个不同的错误：

System.Net.WebException: Error getting response stream (ReadDone1): ReceiveFailure ---> Mono.Security.Protocol.Tls.TlsException: The authentication or decryption has failed.
  at Mono.Security.Protocol.Tls.RecordProtocol.ProcessAlert (AlertLevel alertLevel, AlertDescription alertDesc) [0x00000] in <filename unknown>:0
  at Mono.Security.Protocol.Tls.RecordProtocol.InternalReceiveRecordCallback (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
  --- End of inner exception stack trace ---
  at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
  at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0
  at System.Net.WebClient.GetWebResponse (System.Net.WebRequest request) [0x00000] in <filename unknown>:0
  at System.Net.WebClient.ReadAll (System.Net.WebRequest request, System.Object userToken) [0x00000] in <filename unknown>:0
  at System.Net.WebClient.UploadDataCore (System.Uri address, System.String method, System.Byte[] data, System.Object userToken) [0x00000] in <filename unknown>:0
  at System.Net.WebClient.UploadData (System.Uri address, System.String method, System.Byte[] data) [0x00000] in <filename unknown>:0
4

2 回答 2

1

这似乎是网络层应该处理的间歇性网络问题。该问题随着后续尝试而消失。

证书无效。我发现解决此问题的唯一方法是捕获异常并重试请求，创建一个新的 WebClient 对象（因为某些标头已被清除）。

我基本上把代码放在一个循环中，试图多次上传数据。

int maxAttempts = 5;
for (int attempt = 1; attempt <= maxAttempts; attempt++) {
    try {
        if (attempt > 1) {
             // Wait a few seconds
             Thread.Sleep(new TimeSpan(0, 0, 10));
             Logger.Output(string.Format("Retrying request, try: {0}", attempt));
        }
        using (var webClient = new WebClient()) {
            webClient.Headers.Add("Content-Type", string.Format("multipart/form-data; boundary={0}", boundary));
            Logger.Output(webClient.Headers.ToString());
            var response1 = webClient.UploadData(address, "POST", buffer);
        }
        Logger.Output("Table {0} added successfully", table);
        break;
    } catch (WebException e) {
        // More logging here
        if (attempt == maxAttempts) {
            throw; // Re-throw it, clearly something is wrong if it fails x times.
        }
    }
}
于 2013-05-07T05:19:40.607 回答
0

可能是单声道的The authentication or decryption has failed.错误，使用 curl 应该可以工作。看到这个帖子。

于 2015-05-30T15:54:07.443 回答