89 lines
1.9 KiB
C
89 lines
1.9 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <string.h>
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#include <errno.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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#define BACKLOG 5
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int main()
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{
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struct sockaddr_in infoServer;
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struct sockaddr_in retourServer;
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socklen_t tailleRetourServ;
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int retourSocket;
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int retourBind;
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int retourListen;
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int retourAccept;
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int retourRead;
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int retourWrite;
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int msg;
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infoServer.sin_family = AF_INET;
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infoServer.sin_addr.s_addr = htonl(INADDR_ANY);
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infoServer.sin_port = htons(5555);
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retourSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
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if(retourSocket == -1)
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{
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printf("Erreur socket\n");
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printf("%s", strerror(errno));
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exit(errno);
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}
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retourBind = bind(retourSocket, (struct sockaddr *)&infoServer, sizeof(infoServer));
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if(retourBind == -1)
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{
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printf("Erreur bind\n");
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printf("%s", strerror(errno));
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exit(errno);
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}
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retourListen = listen(retourSocket, BACKLOG);
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if(retourListen == -1)
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{
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printf("Erreur listen\n");
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printf("%s", strerror(errno));
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exit(errno);
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}
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tailleRetourServ = sizeof(retourServer);
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retourAccept = accept(retourSocket, (struct sockaddr *)&retourServer, &tailleRetourServ);
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if(retourAccept == -1)
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{
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printf("Erreur accept\n");
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printf("%s", strerror(errno));
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exit(errno);
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}
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retourRead = read(retourAccept, &msg, sizeof(msg));
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if(retourRead == -1)
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{
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printf("Erreur recv\n");
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printf("%s", strerror(errno));
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exit(errno);
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}
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printf("%d", msg);
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msg = -msg;
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retourWrite = write(retourAccept, &msg, sizeof(msg));
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if(retourWrite == -1)
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{
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printf("Erreur sendto\n");
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printf("%s", strerror(errno));
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exit(errno);
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}
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return 0;
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}
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