sysdis-tp/client.c

#include "client.h"



int main(int argc, char* argv[]){

	/* [1] Initialisation
	=========================================================*/
	/* (1) Socket information */
	// Server socket address
	static struct sockaddr_in server_addr;
	// Local socket
	int sock;
	
	/* (2) Misc. information */
	// Response
	char *msg = "some message\0";
	// Reception buffer
	char buffer[BUFSIZE] = {'\0'};
	// Will contain the response
	char *response;
	// Will contain the length of received/sent data
	int nb_bytes;
	


	/* [2] UPD socket creation
	=========================================================*/
	sock = xconnect("localhost", 4000, (struct sockaddr*) &server_addr);

	/* (1-) Manage error */
	if( sock == -1 ){
		perror("erreur création socket");
		exit(1);
	}


	/* [3] Send message
	=========================================================*/
	/* (1) Send message to server */
	nb_bytes = xsend(sock, msg, (struct sockaddr*) &server_addr);

	/* (2) Check if send succesfully */
	if( nb_bytes == -1 ){
		perror("erreur envoi message");
		exit(1);
	}

	// log
	printf("paquet envoyé, nb_bytes = %d\n",nb_bytes);



	/* [4] Wait for response
	=========================================================*/
	/* (1) Wait for response */
	nb_bytes = xlisten(sock, (struct sockaddr*) &server_addr, buffer, BUFSIZE);

	/* (2) Check if received successfully (and consistently) */
	if( nb_bytes == -1 ){
		perror("erreur réponse serveur");
		exit(1);
	}

	/* (3) Copy response into var */
	response = (char*) malloc(nb_bytes * sizeof(char));
	memcpy(response, buffer, nb_bytes);

	/* (4) log */
	printf("response recue du serveur : %s\n",response);


	/* [5] Close socket
	=========================================================*/
	close(sock);

	return 0;
}