I have mad开发者_JAVA百科e a server and a client in C# which transfers files. But when transferring it pauses for some seconds and then continues. I have uploaded a video on YouTube to demonstrate: http://www.youtube.com/watch?v=GGRKRW6ihLo
As you can see it sometime pauses and then continues.
Receiver:
using (var writer = new StreamWriter(Path.Combine(_localPath, file.FileName))) {
var buffer = new byte[_bufferSize];
while (file.Transferred < file.Size && _active) {
int read = ns.Read(buffer, 0, _bufferSize);
writer.BaseStream.Write(buffer, 0, read);
file.Transferred += read;
}
writer.Close();
}
Sender:
using (var reader = new StreamReader(file.FilePath)) {
var buffer = new byte[_bufferSize];
while (file.Transferred < file.Size && _active) {
int read = reader.BaseStream.Read(buffer, 0, _bufferSize);
ns.Write(buffer, 0, read);
file.Transferred += read;
}
reader.Close();
}
Try setting
// Sends data immediately upon calling NetworkStream.Write.
tcpClient.NoDelay = true;
Send
var buffer = new byte[ tcpClient.SendBufferSize ];
Read
var buffer = new byte[ tcpClient.ReceiveBufferSize ];
The TcpClient.SendBufferSize and TcpClient.ReceiveBufferSize can vary depending on platform. I have in some cases made the buffer half the size or twice the size - of the TcpClient Buffer size.
Nice video.... What is your _bufferSize set to? Drop down the size and see if it changes the behavior. My transfers were less lumpy when I cut the size in half. Have fun!
You could take a look at the sendfile http://msdn.microsoft.com/en-us/library/sx0a40c2.aspx
It uses the kernel to avoid the copying of data around in memory.
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