Distributed Systems Development - Autonomics Development: A Domain-Specific Aspect Language Approach - page 11

Server

socket()

bind()

listen()

Client

accept()

socket()

Blocks until connection
received from client

Connection
Estabilishment

connect()

read() write()

write() read()

close() close()

Figure 2.1. Socket calls for a connection-oriented protocol.

piggybacking [107] are used. To overcome this, we provide a set of utility routines
to read the remaining bytes, in the case of a read call, or output the remaining
bytes, in the case of a write call.

int readline(int socket, char ∗buffer, int len);
int writeline(int socket, char ∗ buffer, int bytes);

Our server implementation is as follows:

extern int writeline(int socket, char ∗buffer,int bytes);

int main(int argc, char ∗∗ argv) {

int sock;
struct sockaddr_in server;