Après TCP : UDP
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TheCamel
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26
Date d'inscription
dimanche 16 mars 2008
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Membre
Dernière intervention
23 février 2011
-
17 févr. 2009 à 18:59
TheCamel Messages postés 26 Date d'inscription dimanche 16 mars 2008 Statut Membre Dernière intervention 23 février 2011 - 19 févr. 2009 à 17:22
TheCamel Messages postés 26 Date d'inscription dimanche 16 mars 2008 Statut Membre Dernière intervention 23 février 2011 - 19 févr. 2009 à 17:22
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4 réponses
SebLinck
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212
Date d'inscription
mardi 17 mai 2005
Statut
Membre
Dernière intervention
23 juin 2011
19 févr. 2009 à 09:47
19 févr. 2009 à 09:47
Salut,
alors voilà:
-------------------------------------------------------------------------- SERVEUR
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#include
#define MSGSIZE 500
main(int argc, char **argv)
{
int sockfd, cc, addr_in_size;
u_short portnum = 12345;
struct sockaddr_in *my_addr, *from;
char *msg;
u_long fromaddr;
addr_in_size = sizeof(struct sockaddr_in);
msg = ( char *)malloc(MSGSIZE);
from = (struct sockaddr_in *)malloc(addr_in_size);
my_addr = ( struct sockaddr_in *)malloc(addr_in_size);
memset((char *)my_addr,(char)0,addr_in_size);
my_addr->sin_family = AF_INET;
my_addr->sin_addr.s_addr = htonl(INADDR_ANY);
my_addr->sin_port = portnum;
if ((sockfd = socket (PF_INET, SOCK_DGRAM, 0)) < 0){
fprintf(stderr,"Error %d in socket: %s\n",errno,sys_errlist[errno]);
exit(errno);
};
if(bind(sockfd, (struct sockaddr *)my_addr, addr_in_size) < 0){
fprintf(stderr,"Error %d in bind: %s\n",errno,sys_errlist[errno]);
if(errno != EADDRINUSE) exit(errno);
};
fprintf(stdout,"Ready to receive\n");
while (1){
if((cc = recvfrom (sockfd,msg,MSGSIZE,0,(struct sockaddr *)from,
&addr_in_size)) = = -1){
fprintf(stderr,"Error %d in recvfrom: %s\n",
errno,sys_errlist[errno]);
exit(errno);
};
fromaddr = from->sin_addr.s_addr;
msg[cc] = '\0';
fprintf(stdout,"From %s port %d: %s\n",
(gethostbyaddr(( char *)&fromaddr,
sizeof(fromaddr),
AF_INET))->h_name,
from->sin_port,msg);
}
}
------------------------------------------------------------------CLIENT
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include
#define MSGSIZE 500
main(int argc,char **argv)
{
int sockfd, ok, addr_in_size;
u_short portnum = 12345;
struct sockaddr_in *to;
struct hostent *toinfo;
char *msg, *htoname = "127.0.0.1";
u_long toaddr;
msg = ( char *)malloc(MSGSIZE);
to = (struct sockaddr_in *)malloc(sizeof(struct sockaddr_in));
if((toinfo gethostbyname(htoname)) NULL){
fprintf(stderr,"Error %d in gethostbyname: %s\n",
errno,sys_errlist[errno]);
exit(errno);
};
toaddr = *(u_long *)toinfo->h_addr_list[0];
addr_in_size = sizeof (struct sockaddr_in);
memset((char *)to,(char)0,addr_in_size);
to->sin_family = AF_INET;
to->sin_addr.s_addr = toaddr;
to->sin_port = /*(htons)*/portnum;
if ((sockfd socket (PF_INET, SOCK_DGRAM, 0)) = -1){
fprintf(stderr,"Error %d in socket: %s\n",errno,sys_errlist[errno]);
exit(errno);
};
ok = 1;
while (ok){
fprintf(stdout,"Message: ");
scanf("%s",msg);
fprintf(stdout,"\n");
ok = (msg[0] != '0');
if (sendto(sockfd,msg,strlen(msg),0,(struct sockaddr *)to,
addr_in_size) == -1){
fprintf(stderr,"Error %d in sendto: %s\n",errno,sys_errlist[errno]);
exit(errno);
}
}
}
Cordialement,
Sébastien.
alors voilà:
-------------------------------------------------------------------------- SERVEUR
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>
#include
#define MSGSIZE 500
main(int argc, char **argv)
{
int sockfd, cc, addr_in_size;
u_short portnum = 12345;
struct sockaddr_in *my_addr, *from;
char *msg;
u_long fromaddr;
addr_in_size = sizeof(struct sockaddr_in);
msg = ( char *)malloc(MSGSIZE);
from = (struct sockaddr_in *)malloc(addr_in_size);
my_addr = ( struct sockaddr_in *)malloc(addr_in_size);
memset((char *)my_addr,(char)0,addr_in_size);
my_addr->sin_family = AF_INET;
my_addr->sin_addr.s_addr = htonl(INADDR_ANY);
my_addr->sin_port = portnum;
if ((sockfd = socket (PF_INET, SOCK_DGRAM, 0)) < 0){
fprintf(stderr,"Error %d in socket: %s\n",errno,sys_errlist[errno]);
exit(errno);
};
if(bind(sockfd, (struct sockaddr *)my_addr, addr_in_size) < 0){
fprintf(stderr,"Error %d in bind: %s\n",errno,sys_errlist[errno]);
if(errno != EADDRINUSE) exit(errno);
};
fprintf(stdout,"Ready to receive\n");
while (1){
if((cc = recvfrom (sockfd,msg,MSGSIZE,0,(struct sockaddr *)from,
&addr_in_size)) = = -1){
fprintf(stderr,"Error %d in recvfrom: %s\n",
errno,sys_errlist[errno]);
exit(errno);
};
fromaddr = from->sin_addr.s_addr;
msg[cc] = '\0';
fprintf(stdout,"From %s port %d: %s\n",
(gethostbyaddr(( char *)&fromaddr,
sizeof(fromaddr),
AF_INET))->h_name,
from->sin_port,msg);
}
}
------------------------------------------------------------------CLIENT
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include
#define MSGSIZE 500
main(int argc,char **argv)
{
int sockfd, ok, addr_in_size;
u_short portnum = 12345;
struct sockaddr_in *to;
struct hostent *toinfo;
char *msg, *htoname = "127.0.0.1";
u_long toaddr;
msg = ( char *)malloc(MSGSIZE);
to = (struct sockaddr_in *)malloc(sizeof(struct sockaddr_in));
if((toinfo gethostbyname(htoname)) NULL){
fprintf(stderr,"Error %d in gethostbyname: %s\n",
errno,sys_errlist[errno]);
exit(errno);
};
toaddr = *(u_long *)toinfo->h_addr_list[0];
addr_in_size = sizeof (struct sockaddr_in);
memset((char *)to,(char)0,addr_in_size);
to->sin_family = AF_INET;
to->sin_addr.s_addr = toaddr;
to->sin_port = /*(htons)*/portnum;
if ((sockfd socket (PF_INET, SOCK_DGRAM, 0)) = -1){
fprintf(stderr,"Error %d in socket: %s\n",errno,sys_errlist[errno]);
exit(errno);
};
ok = 1;
while (ok){
fprintf(stdout,"Message: ");
scanf("%s",msg);
fprintf(stdout,"\n");
ok = (msg[0] != '0');
if (sendto(sockfd,msg,strlen(msg),0,(struct sockaddr *)to,
addr_in_size) == -1){
fprintf(stderr,"Error %d in sendto: %s\n",errno,sys_errlist[errno]);
exit(errno);
}
}
}
Cordialement,
Sébastien.
SebLinck
Messages postés
212
Date d'inscription
mardi 17 mai 2005
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Dernière intervention
23 juin 2011
17 févr. 2009 à 22:27
17 févr. 2009 à 22:27
Des longues année de fumisterie alors ..
Cordialement,
Sébastien.
Cordialement,
Sébastien.
TheCamel
Messages postés
26
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dimanche 16 mars 2008
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23 février 2011
1
18 févr. 2009 à 18:20
18 févr. 2009 à 18:20
Je ne vois pas en quoi ne pas avoir besoin d'utiliser de protocole UDP est de la fumisterie ... le plus souvent on me chargeait de chats quand il fallait du réseau.
TheCamel
Messages postés
26
Date d'inscription
dimanche 16 mars 2008
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Dernière intervention
23 février 2011
1
19 févr. 2009 à 17:22
19 févr. 2009 à 17:22
Ah, merci beaucoup.
