Etudes/BTS/C/Deuxieme annee/chatSocketSelectServer.c

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C
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2016-10-14 15:11:52 +00:00
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include <unistd.h>
#define BACKLOG 5
#define MAX 512
int main()
{
fd_set rfds;
struct timeval tv;
struct sockaddr_in infoServer;
struct sockaddr_in retourServer;
socklen_t tailleInfoServ;
int retourSocket;
int retourBind;
int retourListen;
int retourAccept;
int retourRead;
int retourWrite;
char msg[MAX];
infoServer.sin_family = AF_INET;
infoServer.sin_addr.s_addr = htonl(INADDR_ANY);
infoServer.sin_port = htons(3434);
retourSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if(retourSocket == -1)
{
printf("Erreur socket\n");
printf("%s", strerror(errno));
exit(errno);
}
retourBind = bind(retourSocket, (struct sockaddr *)&infoServer, sizeof(infoServer));
if(retourBind == -1)
{
printf("Erreur bind\n");
printf("%s", strerror(errno));
exit(errno);
}
retourListen = listen(retourSocket, BACKLOG);
if(retourListen == -1)
{
printf("Erreur listen\n");
printf("%s", strerror(errno));
exit(errno);
}
printf("Attente d'une connexion.\n\n");
tailleInfoServ = sizeof(retourServer);
retourAccept = accept(retourSocket, (struct sockaddr *)&retourServer, &tailleInfoServ);
if(retourAccept == -1)
{
printf("Erreur accept\n");
printf("%s", strerror(errno));
exit(errno);
}
while(1)
{
FD_ZERO(&rfds);
FD_SET(0, &rfds);
tv.tv_sec = 5;
tv.tv_usec = 0;
printf("Attente d'un nouveau message...\n\n");
if(select(retourSocket+1, &rfds, NULL, NULL, &tv))
{
retourRead = read(retourAccept, &msg, sizeof(msg));
if(retourRead == -1)
{
printf("Erreur read\n");
printf("%s", strerror(errno));
exit(errno);
}
printf("Nouveau message \n");
printf("IP : %s:%d: %s\n\n", inet_ntoa(retourServer.sin_addr), ntohs(retourServer.sin_port), msg);
}
printf("Message : ");
gets(msg);
printf("\n\n");
retourWrite = write(retourAccept, &msg, sizeof(msg));
if(retourWrite == -1)
{
printf("Erreur write\n");
printf("%s", strerror(errno));
exit(errno);
}
}
close(retourAccept);
return 0;
}