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POHow to wait until stream write is done
 

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    <p>I have a server app that listens for connections on port 8888. I am also creating the client application. It is a simple application the only hard thing about it is managing multiple connections. so I just need to send files between computers so the way I do that, I don't know if it is wright but it works maybe you guys can correct me. here is my algorithm when sending the file:</p> <pre><code>NetworkStream stream = \\ initialize it while(someCondition) { // first I open the file for reading and read chunks of it byte[] chunk = fileRead(file, indexStart, indexEnd) // I have a similar method this is just to illustate my point stream.Write(chunk, \\other params) // since I often send large files it will be nice if I can wait here // until the stream.Write is done. when debuging this the while loop // executes several times then it waits. } </code></pre> <p>and on the other side I read bytes from that stream and write it to a file.</p> <p>I also need to wait sometimes because I send multiple files and I want to make sure that the first file has been sent before moving to the next. I know I can solve this by using the stream.Read method once the transfer has been done. and sending data back from the client. but sometimes I believe it will be helpful to know when the stream.write is done.</p> <hr> <p>Edit</p> <p>ok so based on your answers I can for example send to the client the number of bytes that I am planing to send. and once the client recives that many bytes it means it is done. But my question is if this is efficient. I mean doing something like</p> <p>on the server:</p> <p>writing data "sending the file length"</p> <p>read data "check to see if the client received the length" (expecting a string ok for example)</p> <p>write data "tel the client the name of the file"</p> <p>read data "check to see if the client recived the name of the file"</p> <p>write data "start sending chuncks of the file"</p> <p>read data "wait until client replies with the string ok for example"</p>
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    1. COAm I missing something? The stream.Write call is going to be blocking, so it always waits until it is complete. http://msdn.microsoft.com/en-us/library/system.net.sockets.networkstream.write.aspx
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    2. COI don't think that is the case because before the way I used to tell the client that the file had been sent was by calling the method. stream.Write( "<done>".toByteArray,...) and that string I sent it obviously when I was done sending the file right. but sometimes that string was received before and chunks of the file later...
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    3. COin other words the client the app that was receiving the file I used to check every time if a string of length x was sent and if was equal to "<done>" then to close the file but sometimes the "<done>" was sent before other parts of the file causing the file to be incomplete..
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