Extra Credit - Networking

[srujun]

This issue will keep track of things that will need to be done to implement Networking within MazeOS.

System Calls - from Beej's Networking Guide

1. getaddrinfo() (and freeaddrinfo())

Populates a linked list of connection information.

int
getaddrinfo(const char *node,    // e.g. "www.example.com" or IP
            const char *service, // e.g. "http" or port number
            const struct addrinfo *hints,
            struct addrinfo **res);

2. socket()

Creates the file descriptor to use when sending or receiving data.

int
socket(int domain, int type, int protocol);

3. connect()

Connects the socket to the remote host.

int
bind(int sockfd, struct sockaddr *my_addr, int addrlen);

4. send() and recv() - for TCP sockets

Sending and receiving data for stream sockets.

int
send(int sockfd, const void *msg, int len, int flags);

int
recv(int sockfd, void *buf, int len, int flags);

4. sendto() and recvfrom() - for UDP sockets

Sending and receiving data for datagram sockets.

int
sendto(int sockfd, const void *msg, int len, unsigned int flags, const struct sockaddr *to, socklen_t tolen);

int
recvfrom(int sockfd, void *buf, int len, unsigned int flags, struct sockaddr *from, int *fromlen);