我在c＃中有一个基本的tcp客户端/服务器设置。我现在正在尝试加密来回传输的数据。我能够将数据从客户端发送到服务器，让服务器运行命令，然后尝试将结果发送回客户端。我可以从客户端获取数据到服务器，服务器运行命令。当服务器尝试将结果发送回客户端时，我在客户端上收到一条错误消息，表明该流不可读。以下是相关的代码部分。
服务器：
.......
//Create an instance of TcpListener to listen for TCP connection.
TcpListener tcpListener = new TcpListener(IPAddress.Any, TcpPort);
try
{
while (true)
{
tcpListener.Start();
//Accept the client if one is found.
TcpClient TCP = tcpListener.AcceptTcpClient();
// Console.WriteLine("Client connected through TCP.");
//Create a network stream from the connection.
NetworkStream NetStream = TCP.GetStream();
//Create a new instance of the RijndaelManaged class
// and decrypt the stream.
RijndaelManaged RMCrypto = new RijndaelManaged();
//Create a CryptoStream, pass it the NetworkStream, decrypt with the Rijndael class using the key and IV.
CryptoStream CryptStream = new CryptoStream(NetStream,RMCrypto.CreateDecryptor(Key, IV),CryptoStreamMode.Read);
//Read the stream.
StreamReader SReader = new StreamReader(CryptStream);
//run the command received
string commandToRun = SReader.ReadToEnd();
string commandOutput = runCommand(commandToRun);
Console.WriteLine("output is " + commandOutput);
// SReader.Close();
// now send results back
CryptoStream CStream_WRITE = new CryptoStream(NetStream, RMCrypto.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
if (CStream_WRITE.CanWrite)
{
//Create a StreamWriter for easy writing to the network stream.
StreamWriter SWriter2 = new StreamWriter(CStream_WRITE);
//Write to the stream.
SWriter2.Write(commandOutput, commandOutput.Length);
Console.WriteLine("writing {0} bytes back ", commandOutput.Length);
SWriter2.Flush();
SWriter2.Close();
}
// CStream_WRITE.Close();
// NetStream.Close();
// TCP.Close();
tcpListener.Stop();
} // end while
}
//Catch any exceptions.
catch
{
Console.WriteLine("Server Failed");
}
}
这是客户端：.......粗线是我收到错误的地方
//Create a TCP connection to a listening TCP process.
TcpClient TCP = new TcpClient(serverName, TCPPORT);
//Create a network stream from the TCP connection.
NetworkStream NetStream = TCP.GetStream();
//Create a new instance of the RijndaelManaged class
// and encrypt the stream.
RijndaelManaged RMCrypto = new RijndaelManaged();
byte[] Key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
byte[] IV = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
//Create a CryptoStream, pass it the NetworkStream, and encrypt
//it with the Rijndael class.
CryptoStream CryptStream = new CryptoStream(NetStream, RMCrypto.CreateEncryptor(Key, IV), CryptoStreamMode.Write);
if (CryptStream.CanWrite)
{
//Create a StreamWriter for easy writing to the network stream.
StreamWriter SWriter = new StreamWriter(CryptStream);
//Write to the stream.
SWriter.WriteLine(theData);
SWriter.Flush();
SWriter.Close();
// CryptStream.Close();
//Inform the user that the message was written to the stream.
Console.WriteLine("The message was sent.");
}
// get response
**CryptoStream CStreamREAD = new CryptoStream(NetStream, RMCrypto.CreateDecryptor(Key, IV), CryptoStreamMode.Read);**
if (CStreamREAD.CanRead)
{
Console.WriteLine("stream can read\n");
StreamReader SReader = new StreamReader(CStreamREAD);
string commandResults = SReader.ReadToEnd();
Console.WriteLine("receiving {0} bytes from server", commandResults.Length);
Console.WriteLine("results are " + commandResults)