我有一些非常简单的代码,可以从它连接的网络流中读取行。在代码示例中,每次读取只有一行,并且不会继续从服务器获取更多内容。
怎么了?
byte[] readBuffer = new byte[1024];
byte[] tempBuff = new byte[1024];
int tempBuffSize = 0;
private void btnConnect_Click(object sender, EventArgs e)
{
TcpClient tcpClient = new TcpClient("192.168.1.151", 5505);
NetworkStream stream = tcpClient.GetStream();
stream.BeginRead(readBuffer, 0, 1024, readHandler, tcpClient);
}
void readHandler(IAsyncResult result)
{
TcpClient tcpClient = (TcpClient)result.AsyncState;
int dataLen = tcpClient.GetStream().EndRead(result);
int currStart = 0;
int currEnd = -1;
for (int i = 0; i < dataLen; i++)
{
if (readBuffer[i] == '\r' && i < (readBuffer.Length - 1) &&
readBuffer[i + 1] == '\n')
{
// Set the end of the data
currEnd = i - 1;
// If we have left overs from previous runs:
if (tempBuffSize != 0)
{
byte[] joinedData = new byte[tempBuffSize + (currEnd - currStart + 1)];
Array.Copy(tempBuff, 0, joinedData, 0, tempBuffSize);
Array.Copy(readBuffer, currStart, joinedData, tempBuffSize, (currEnd - currStart + 1));
System.Text.Encoding enc = System.Text.Encoding.ASCII;
string myString = enc.GetString(joinedData);
System.Diagnostics.Debug.Write(myString);
tempBuffSize = 0;
}
else
{
System.Text.Encoding enc = System.Text.Encoding.ASCII;
string myString = enc.GetString(readBuffer);
System.Diagnostics.Debug.Write(myString);
// HandleData(readBuffer, currStart, currEnd);
}
// Set the new start - after our delimiter
currStart = i + 2;
}
}
// See if we still have any leftovers
if (currStart < dataLen)
{
Array.Copy(readBuffer, currStart, tempBuff, 0, dataLen - currStart);
tempBuffSize = dataLen - currStart;
}
}