Waiting for reply in Socket Programming

Question

I am opening and Socket connection and then I need to reply for the result from the server before moving forward.

While(true)
{
Receive message from Client
Process message.
Send query to client .
//wait for message
Receive the result from client.
}

But when the client replies, the message is received at step 1 but I need to receive it at step 4. I am not able to understand how to program it. I have basic server and client code ready. Can somebody just point me in the right direction.

Answer 1

While(true)
{
//wait for message - you should receive message in one point
Receive message from Client
Process message.
if (message==1) Send query to client .
if (message==2) This is result from client

}

upd

Not very clear your architecture, but you'll always receive messages on first step. Maybe you need to use blocking call or another solution. Eg

3 step:
Send query to client.
wait() // blocking call - waiting result

1 step:
if (message==2) //This is result from client
pass reply to 3 step(another thread)

Answer 2

the message is received at step 1 but I need to receive it at step 4.

So do that.

I am not able to understand how to program it

Program step 4 the same way you programmed step 1.