README.md

SLA Library

Library function

• int openTCPSock(char *IP, unsigned short port)

  • This function open TCP socket with provided IP and Port.
  • Return Value : sockfd
  • return -1: Failed to open socket.

• int openUDPSock(char *IP, unsigned short port)

  • This function open UCP socket with provided IP and Port.
  • Note that UDP is connectionless so it saves sock info for later use.
  • Return Value : sockfd
  • return -1: Failed to open socket.

• void closeSock(int sock)

  • This function closes the socket.

• ssize_t recvMsgUntil(int sock, const char* regex, void* buf, size_t n)

  • This function stands for TCP protocol.
  • This function reads in maximum n bytes from the given socket.
  • Return Value : length of recieved data
  • return -1: Failed to read.
  • Even though regex never matched, it can return positive value.

• int sendMsg(int sock, const char* buf, size_t n)

  • This function stands for TCP protocol.
  • This function sends a string to the connected socket.
  • return 0: Succeeded to send all data.
  • return -1: Failed to send.

• int handshake(int sock, const char* ID, const char* privKeyPath, const char* passPath, const char* successMsg)

  • This function performs PGP-based authentication.
  • return 0: handshake succeeded.
  • return -1: handshake failed.