c# Tcp客户端用sslStream传输文件答案

【问题标题】：c# Tcp client transfer file with sslStreamc# Tcp客户端用sslStream传输文件
【发布时间】：2015-12-07 16:30:01
【问题描述】：

我尝试使用 tcp 客户端的 sslStream 发送文件。文件大约 250kb。当我不将 dataLength 写入流时，服务器会因为最大接收缓冲区大小而关闭连接。当我将dataLength写入流时，我没有例外，但服务器出现类型错误（连接正常关闭）。一个原因是，因为 Tcp 客户端关闭事件，服务器无法接收我发送的数据；这是我的代码。服务器代码丢失，我知道它是用 indy 套接字库在 delphi 中编写的这是我的代码

TcpClient sendClient = new TcpClient(serverName, port);
        LingerOption lingerOption = new LingerOption(true, 20);
        sendClient.LingerState = lingerOption;
        using (SslStream sendStream = new SslStream(sendClient.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null))
        {

            try
            {

                sendStream.AuthenticateAsClient(serverName, null, SslProtocols.Ssl2, true);


                sendStream.Write(Encoding.UTF8.GetBytes("Login\r\n" + username + "\r\n" + password + "\r\n"));
                sendStream.Flush();
                int bytesResp = -1;
                byte[] buffer = new byte[1024];

                bytesResp = sendStream.Read(buffer, 0, buffer.Length);

                string response = Encoding.UTF8.GetString(buffer, 0, bytesResp);

                if (response.Trim() == "OK")
                {

                    sendStream.Write(Encoding.ASCII.GetBytes("Send\r\n"));

                    FileStream inputStream = File.OpenRead(filePath);
                    FileInfo f = new FileInfo(filePath);
                    int size = unchecked((int)f.Length);


                    byte[] byteSize = Encoding.ASCII.GetBytes(size.ToString());

                    sendStream.Write(byteSize);
                    sendStream.Write(Encoding.ASCII.GetBytes("\r\n"));

                    sendStream.Write(Encoding.ASCII.GetBytes(fileName + "\r\n"));







                    using (FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read))
                    {

                        long sum = 0;
                        int count = 0;
                        byte[] data = new byte[1024];
                        while (sum < size)
                        {
                            count = fs.Read(data, 0, data.Length);
                            sendStream.Write(data, 0, count);
                            sum += count;

                            Array.Clear(data, 0, data.Length);
                        }
                        sendStream.Flush();
                    }
                    sendStream.Write(Encoding.UTF8.GetBytes("\r\n"));
                    sendStream.Write(Encoding.UTF8.GetBytes("Quit\r\n"));


                }

                MessageBox.Show("end the procedure");

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }

            finally
            {
                if (sendClient.Client.Connected)
                {
                    sendClient.Client.Disconnect(false);
                    sendClient.Client.Dispose();
                }
            }

【问题讨论】：

标签： c# sockets tcp buffer sslstream

【解决方案1】：

我不确定它是否会有所帮助，但我在 using(){} 上遇到了类似的问题，由于某种原因它关闭了 sslstream。所以可能会删除

using (SslStream sendStream = new SslStream(sendClient.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null)){}

进入

SslStream sendStream = new SslStream(sendClient.GetStream(), false, new RemoteCertificateValidationCallback(ValidateServerCertificate), null);

【讨论】：