matt-attack/netlibrary

A simple networking library for C++. Designed with games in mind, but can be used for other things. Tested to work on Android and Windows.

Here's the basics of how to use this...

First, include the Connection.h file:

#include "Netlibrary/Connection.h"

Then you must open a connection on some port:

NetConnection connection;
connection.Open(5432/*insert your port here*/);

Then you can connect to another server, or just run a message receive loop as shown further down to operate a server. This is a blocking function. It tries to connect 4 times, with a timeout of 1 second each before failing:

int status = connection.Connect(Address(127,0,0,1,5007), "password", 0/*status string pointer if you want*/);
if (status < 0)
{
	//connection failed
}

To receive messages:

Peer* sender; int size;
char* buffer;
while (buffer = connection.Receive(sender, size))
{
	//do stuff with your message
	
	delete[] buffer;//delete the message buffer when you are finished with it, or else it leaks
}

Now, there are four different types of messages that you can send:

• Unreliable, Unsequenced Messages - these may or may not arrive in any order
• Reliable, Unordered Messages - these are guaranteed to arrive, but can be in any order
• Reliable, Ordered Messages - these are guaranteed to arrive in the order that they were sent in
• OOB Messages - these are unreliable messages used primarily for low level commands that are sent immediately

//There are two different ways to send messages, either by specifying the Peer* or not
netconnection.SendOOB(char* data, int size);
netconnection.SendOOB(Peer* peer, char* data, int size);

netconnection.Send(char* data, int size);
netconnection.Send(Peer* peer, char* data, int size);

netconnection.SendReliable(char* data, int size);
netconnection.SendReliable(Peer* peer, char* data, int size);

You may access all of the connected peers through the peers std::map

netconnection.peers