• holo (29/29) Sep 24 2015 Hello
• tcak (6/36) Sep 24 2015 Where is the other side of this client? There must be a TCP
• holo (66/112) Sep 27 2015 Sorry i forgot to paste server side. After your post i look on

holo <holosian gmail.comm> writes:

Hello

I'm trying to connect to server and send data, with such simple 
client:



import std.stdio;
import std.socket;
import std.socketstream;
import std.process;
import std.conv;
import core.time;

void main()
{
         char[1024] buffer = 0;

         Socket client = new TcpSocket();
         auto addrServer = new InternetAddress("localhost", 8080);
         client.connect(addrServer);

         while(1)
         {

                 client.send(readln());
                 client.receive(buffer);
                 writeln(buffer);
                 buffer = 0;
          }
}

It is working but only one time, when I'm trying to send again 
(second loop of while) it's stooping on readln() but not sending 
input data.

What am i missing here?

Thanks in advance for any help.

tcak <1ltkrs+3wyh1ow7kzn1k sharklasers.com> writes:

On Thursday, 24 September 2015 at 14:20:39 UTC, holo wrote:
 Hello

 I'm trying to connect to server and send data, with such simple 
 client:



 import std.stdio;
 import std.socket;
 import std.socketstream;
 import std.process;
 import std.conv;
 import core.time;

 void main()
 {
         char[1024] buffer = 0;

         Socket client = new TcpSocket();
         auto addrServer = new InternetAddress("localhost", 
 8080);
         client.connect(addrServer);

         while(1)
         {

                 client.send(readln());
                 client.receive(buffer);
                 writeln(buffer);
                 buffer = 0;
          }
 }

 It is working but only one time, when I'm trying to send again 
 (second loop of while) it's stooping on readln() but not 
 sending input data.

 What am i missing here?

 Thanks in advance for any help.

Where is the other side of this client? There must be a TCP 
Server to listen connections, and create a second TCPSocket for 
communication. There is only one TCPSocket in your code. A lot of 
things are missing there. I would suggest you to check "C 
TCPSocket example" in your favourite search engine.

holo <holosian gmail.comm> writes:

On Friday, 25 September 2015 at 04:38:06 UTC, tcak wrote:
 On Thursday, 24 September 2015 at 14:20:39 UTC, holo wrote:
 Hello

 I'm trying to connect to server and send data, with such 
 simple client:



 import std.stdio;
 import std.socket;
 import std.socketstream;
 import std.process;
 import std.conv;
 import core.time;

 void main()
 {
         char[1024] buffer = 0;

         Socket client = new TcpSocket();
         auto addrServer = new InternetAddress("localhost", 
 8080);
         client.connect(addrServer);

         while(1)
         {

                 client.send(readln());
                 client.receive(buffer);
                 writeln(buffer);
                 buffer = 0;
          }
 }

 It is working but only one time, when I'm trying to send again 
 (second loop of while) it's stooping on readln() but not 
 sending input data.

 What am i missing here?

 Thanks in advance for any help.

 Where is the other side of this client? There must be a TCP 
 Server to listen connections, and create a second TCPSocket for 
 communication. There is only one TCPSocket in your code. A lot 
 of things are missing there. I would suggest you to check "C 
 TCPSocket example" in your favourite search engine.

Sorry i forgot to paste server side. After your post i look on 
that side of my simple socket program and i find out the problem. 
This is example from other forum topic:



import std.stdio;
import std.socket;
import std.algorithm;
import std.conv;

void main() {
     Socket server = new TcpSocket();
     server.setOption(SocketOptionLevel.SOCKET, 
SocketOption.REUSEADDR, true);
     server.bind(new InternetAddress(8080));
     server.listen(1);


	
     while(true) {

         Socket client = server.accept();


         char[1024] buffer = 0;
         auto received = client.receive(buffer);

         writefln("The client said:\n%s", buffer[0.. received]);

         enum header =
             "HTTP/1.0 200 OK\nContent-Type: text/html; 
charset=utf-8\n\n";

         string response = header ~ "Hello World!\n";
         client.send(response);
	
         client.shutdown(SocketShutdown.BOTH);
         client.close();


    }


}

Lie we see after each data recive server is closing connection. I 
rewrite it to something like it:



import std.stdio;
import std.socket;
import std.algorithm;
import std.conv;

void main() {
     Socket server = new TcpSocket();
     server.setOption(SocketOptionLevel.SOCKET, 
SocketOption.REUSEADDR, true);
     server.bind(new InternetAddress(8080));
     server.listen(1);


	Socket client = server.accept();

     while(true) {


         char[1024] buffer = 0;
         auto received = client.receive(buffer);

         writefln("The client said:\n%s", buffer[0.. received]);

         enum header =
             "HTTP/1.0 200 OK\nContent-Type: text/html; 
charset=utf-8\n\n";

         string response = header ~ "Hello World!\n";
         client.send(response);
	

	auto command = to!string(buffer[0.. received]);
	if(command == "exit")
	{
		
		break;
	}
    }

     client.shutdown(SocketShutdown.BOTH);
     client.close();

}

Now everything is working like i needed.