The proxy preserves message boundaries, the ordered/unordered property, the payload protocol identifier, and the stream identifier. It distributes the incoming SCTP associations to multiple servers in a round robin fashion using multiple threads.
The proxy supports all operating systems with kernel SCTP support. The following table shows how to compile the code.
| OS | Compile Command |
|---|---|
| FreeBSD | cc -o proxy -pthread proxy.c |
| Linux | gcc -o proxy -pthread proxy.c -lsctp |
| Solaris | gcc -o proxy proxy.c -lsocket -lnsl -lsctp |
On Linux, you must have installed the libsctp-dev package.
This provides the required header files and the required library.
-4-6-i number_of_incoming_streams-o number_of_outgoing_streams-L address_1,address_2,...,address_N:port-X address_1,address_2,...,address_N-S address_1,address_2,...,address_N:port
proxy -i 2048 -o 1024 -L 127.0.0.1,::1:5001 -X 127.0.0.1,::1 -S 127.0.0.1,::1:6001 -S 127.0.0.1,::1:6002
The proxy will allow 2048 incoming streams from clients and requests 1024 outgoing streams from them.
It will listen for clients on port 5001 using the IP-addresses 127.0.0.1 and ::1 as specified by the -L option.
When connecting to a server, the proxy will use the IP-addresses 127.0.0.1 and ::1 as specified by the -X option.
The proxy will connect to two servers, one listening at the IP-addresses 127.0.0.1 and ::1 on port 6001, and one litening at the IP addresses 127.0.0.1 and ::1 on port 6002, as specified by the -S options.