Java PrintWriter behavior as socket

Question

I made a server in which the sending of the data itself is made like this:

PrintWriter writer = new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream(), "UTF-8"));
writer.write(json);
writer.close();

How can i know if the server has indeed sent the entire message?

In my client (written in C#), when the json string is long, then i get a certain amount of bytes which is less then the length of the json string (for some reason always a max length of 183 bytes).

The client is using asynchronous connection. How can i know if the server indeed sent the entire message? Is it possible i need to divide a long message into chunks and send them one after the other? I'm just not sure if the problem is in the server or in the client.

Answer 1

What I did in the end was adding an header to the message with the size of the message and then checked on the C# side if the size of the received message is the size of the message and if it's not, ask again the socket for data until I got the full message.