109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <arpa/inet.h>
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#include "../src/ipc.h"
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#include "../src/utils.h"
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/**
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* tcp connection to localhost port argv[1]
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* message 1: pong
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* message 2: echo with libipc format
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*
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* [messagetype | len | usertype | payload ]
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* 1 B | 4 B | 1 B | ]
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*/
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int connection (char *ipstr, int port)
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{
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int sockfd;
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SECURE_DECLARATION (struct sockaddr_in, server);
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socklen_t addrlen;
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// socket factory
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T_PERROR_Q (((sockfd = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) == -1), "socket creation", EXIT_FAILURE);
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// init remote addr structure and other params
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server.sin_family = AF_INET;
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server.sin_port = htons (port);
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addrlen = sizeof (struct sockaddr_in);
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// get addr from command line and convert it
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T_PERROR_Q ((inet_pton (AF_INET, ipstr, &server.sin_addr) <= 0), "inet_pton", EXIT_FAILURE);
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printf ("Trying to connect to the remote host\n");
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T_PERROR_Q ((connect (sockfd, (struct sockaddr *)&server, addrlen) == -1), "connection", EXIT_FAILURE);
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printf ("Connection OK\n");
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return sockfd;
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}
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void send_receive (int sockfd)
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{
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SECURE_BUFFER_DECLARATION (unsigned char, buf, BUFSIZ);
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int paylen;
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// first, send service name "pong"
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// send string
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T_PERROR_Q ((send (sockfd, "pong", 4, 0) == -1), "sending a message", EXIT_FAILURE);
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printf ("message 'pong' sent\n");
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T_PERROR_Q (((paylen = recv (sockfd, buf, BUFSIZ, 0)) <= 0), "cannot connect to networkd", EXIT_FAILURE);
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print_hexa ("should be 'OK'", buf, paylen);
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memset (buf, 0, BUFSIZ);
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// 2 | 6 | 0 | "coucou"
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// 1 B | 4 B | 1 | 6 B
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ipc_message_raw_serialize ((char *)buf, MSG_TYPE_DATA, 42, "coucou", 6);
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printf("\n");
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print_hexa ("message to send", buf, 12);
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printf("\n");
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// sleep (1);
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T_PERROR_Q ((send (sockfd, buf, 12, 0) == -1), "sending a message", EXIT_FAILURE);
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printf ("message 'coucou' sent\n");
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memset (buf, 0, BUFSIZ);
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// receiving a message
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T_PERROR_Q (((paylen = recv (sockfd, buf, BUFSIZ, 0)) < 0), "receiving a message", EXIT_FAILURE);
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printf("\n");
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if (paylen == 0) {
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fprintf (stderr, "error: disconnection from the server\n");
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exit (EXIT_FAILURE);
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}
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print_hexa ("RECEIVED MESSAGE", buf, paylen);
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}
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int main (int argc, char *argv[])
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{
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char *ipstr = "127.0.0.1";
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int port = 9000;
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if (argc == 2) {
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port = atoi (argv[1]);
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} else if (argc == 3) {
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ipstr = argv[1];
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port = atoi (argv[2]);
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}
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int sockfd = connection (ipstr, port);
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send_receive (sockfd);
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printf ("\nDisconnection\n");
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// close the socket
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close (sockfd);
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return EXIT_SUCCESS;
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}
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