libtransport

#Overview

libtransport is the solution to Project 1. If you just modified transport.c for your project solution, you may hot swap it in instead of libtransport (unrecommended since there might be some implementation details that you’ve missed).

#listen_loop

void listen_loop(int sockfd, struct sockaddr_in* addr, int initial_state,
                 ssize_t (*input_p)(uint8_t*, size_t),
                 void (*output_p)(uint8_t*, size_t));

An ever running loop where the transport layer continously runs the Project 1 protocol to send and receive data.

#Parameters

• int sockfd: The socket that’s already bound to an AF_INET address.
• struct sockaddr_in*: The destination AF_INET address.
• int initial_state: Notifies the transport layer if it’s acting as the client or server.
• ssize_t (*input_p)(uint8_t*, size_t): A pointer to a function that serves as the output from the upper layer (i.e. input into the transport layer).
• void (*output_p)(uint8_t*, size_t): A pointer to a function that servers as the input from the upper layer (i.e. output from the transport layer).

#Returns

Never.