/** A basic client, note that he will create the sockets, not the server
* @param path Path to the server socket
*/
void client_socket(char *path){
lsocket*main_socket=make_socket(path);
/* Connect to the given socket address */
open_socket(main_socket,S_IWUSR);
/* Creation of the two sockets */
sockets=open_communication();
/* Send the socket to listen to */
if (handshake(main_socket,sockets)<0) OUT("The server didn't accepted connection");
/* Acknoledge user requests */
bor_signal(SIGINT,gotcha,0);
while (user_request(sockets));
/* Properly close connection */
self_terminate();
}
/*-----------main---------------
* This function opens a socket, and listens for any
* client trying to connect, and then forms the connection
* then it reads what the client is requesting
* and replies with the result of that request
-------------------------------*/
int main(int argc, char **argv){
/* variable declaration:*/
int comm_fd, listen_fd; //the file descriptor for the socket used for communication
int portno; //the port number to connect to
char directory[MAX_STR_LEN]; //the directory to look in for the requested file
char request[MAX_STR_LEN]; // the http request received from the client
char response[MAX_RES_LEN]; // the response to send back to the client
// check to see if there are enough arguments provided by the user
if(argc < 3)
{
fprintf(stderr,"ERROR: please provide the port number and the location of the file in the program arguments");
exit(1);
}
/* grab the port number and the directory from
* the program arguments*/
portno = atoi(argv[1]);
strncpy(directory, argv[2], MAX_STR_LEN);
// attempt to open a connection
listen_fd = open_communication(portno);
// run until alt+C is pressed by the user
while(1){
// listen for an attempted connection from the server
listen(listen_fd, 10);
// attempt to accept the connection
comm_fd = accept(listen_fd, (struct sockaddr*) NULL, NULL);
// check to see if the connection is successfully made
if(comm_fd < 0)
{
fprintf(stderr,"ERROR: unable to accept communications");
exit(0);
}
//write zeros to the memory pointed to by "request" and "response" character strings
bzero(request, MAX_STR_LEN);
bzero(response, MAX_RES_LEN);
// attempt to read the request from the client
if(read(comm_fd,request,MAX_STR_LEN) < 0)
{
//the read failed, so report it and exit
fprintf(stderr,"ERROR: failed to read from the client");
close(comm_fd);
exit(1);
}
// parse the request and form a response
perform_http(request, response, directory);
//send the response back to the client
if(write(comm_fd,response,MAX_RES_LEN) < 0)
{
// the write failed, so report it and exit
fprintf(stderr,"ERROR: failed to write to the client");
close(comm_fd);
exit(1);
}
// close the socket used for the communication
close(comm_fd);
}
}
