cod server

/* Modul CLIENT TCP */

#include <stdio.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <errno.h>

#include <netdb.h>



main (int argc, char ** argv)

{

    unsigned short port; /* portul client, acelasi ca cel specificat in modulul server */

    char buffer[32];

    struct sockaddr_in server; /*adresa server*/

    struct hostent * hostnm; /*informatii server */

    int s, rc;



    if (argc != 3)

    {

          printf("Apel: %s hostname port \n", argv[0]);

          exit(1);

    }



/*preia numele calculatorului local */

    if (!(hostnm=(struct hostent *) gethostbyname(argv[1])))



    {

            perror("Eroare la preluarea numelui serverului");

            exit(3);

    }



    printf("A preluat numele de server grupa 1080 Batrinac Sergiu client TCP.... \n");



    port = (unsigned short)atoi(argv[2]);

    strcpy(buffer, "Mesaj prin socket, TCP-gr1080");



    /*preia informatiile despre server*/

    server.sin_family = AF_INET; /*AF_UNIX, AF_INET*/

    server.sin_port = htons(port);

    server.sin_addr.s_addr = inet_addr("172.22.23.56"); /* aceeasi ca la server */



    printf("A preluat inf. despre server....\n");
    printf("Am transmis mesaj pe TCP Batrinac Sergiu");



    if ((s = socket(AF_INET,SOCK_STREAM,0)) < 0)

    {

            perror("Eroare la creare socket");

            exit(4);

    }



    printf("A creat socket-ul....\n");

    if (connect(s, &server, sizeof(server)) < 0)

    {

            perror("Eroare la obtinerea conexiunii");

           exit(5);

    }





    printf("A realizat conexiunea.....\n");



    /* Transmite mesajul serverului */

    if (send(s, buffer, strlen(buffer), 0) < 0)

    {

         perror("Eroare la transmisie");

        exit(6);

    }





    printf("A transmis mesajul.....\n");



    /* Confirmare de la server */

    if (recv(s, buffer, 32, 0) < 0)

    {

            perror("Eroare la receptie");

            exit(7);

    }



    printf("Confirmarea de la server a fost facuta.... \n");



    close(s);

    exit(0);

}