C Programmation de Socket Cheat Sheet (DRAFT) by Torvak

int main(){
//DECLARATION VARIABLES
int clientSocket, connexion, reception, envoie, deconnexion;
struct sockaddr_in serverAddr;
struct sockaddr_in localAddr;
socklen_t addr_size;
char requete[] = "test";
char reponse[1024];
long port = 10500;
long ip = inet_addr("193.50.225.215");

//TRAITEMENT
    
// Création de la socket
printf("Creation de la socket.....\n");
clientSocket = socket(PF_INET, SOCK_STREAM, 0); 
    
// Configuration des parametres de ma struct de l'addresse locale
printf("Configuration de la struct d'addresse locale\n");
memset(localAddr.sin_zero, '\0', sizeof(localAddr.sin_zero));   
localAddr.sin_family = AF_INET; 
localAddr.sin_port = htons(0); //port locale
localAddr.sin_addr.s_addr = htonl (INADDR_ANY); //Adr. locale
bind(clientSocket, (struct sockaddr) &localAddr, sizeof(struct sockaddr)); //Association IP et port*

// Configuration des parametres de la struct de l'addresse du serveur 
printf("Configuration de la struct d'addresse serveur\n");
memset(serverAddr.sin_zero, '\0', sizeof(serverAddr.sin_zero));   
serverAddr.sin_family = AF_INET;  
serverAddr.sin_port = htons(port); //port du serveur
serverAddr.sin_addr.s_addr = inet_addr("127.0.0.1");  // Adr. du serveur

//Connexion du serveur
addr_size = sizeof serverAddr; 
connect(clientSocket, (struct sockaddr *) &serverAddr, 

//Boucle de communication avec le serveur
while(!fini) {
   //Envoie de la requete au serveur
    send(clientSocket, requete, strlen(requete), 0);
   //Attente de la réponse du serveur
    recv(clientSocket, reponse, strlen(reponse), 0);
}
  // Deconnexion et fermeture de la socket
  shutdown(clientSocket, 2);
  close(clientSocket);

  return 0;
}

int main(){
  
//DECLARATION 
int socketEcoute, socketService, attachement, connexion, reception, envoie, deconnexion, fermeture;
int dialogueClient = 1;
char reponse[1024];
struct sockaddr_in serverAddr;
struct sockaddr_storage serverStorage;
socklen_t addr_size;
long port = 10500;
  
//TRAITEMENT
// Creation de la socket ecoute
printf("Creation de socketEcoute.....\n");
socketEcoute = socket(PF_INET, SOCK_STREAM, 0); 

// Configuration des parametres de la struct de l'addresse du serveur 
memset(serverAddr.sin_zero, '\0', sizeof serverAddr.sin_zero);  
serverAddr.sin_family = AF_INET; 
serverAddr.sin_port = htons(port);
serverAddr.sin_addr.s_addr = htonl(INADDR_ANY);  


//Attachement
printf("Attachement de socketEcoute....\n");
attachement = bind(socketEcoute, (struct sockaddr *) &serverAddr, sizeof(serverAddr));
  
//Mise à l'ecoute (maxi 5 connections)
if(listen(socketEcoute,5)==0)
  printf("Mise a l'ecoute.....\n\n");
else
    printf("Erreur de mise a l'ecoute\n\n");

//Attente connexion
while(1) {
addr_size = sizeof serverStorage;
socketService = accept(socketEcoute, (struct sockaddr *) &serverStorage, &addr_size); 
  
//Dialogue avec le client
while(1) {
//Lecture de la requete du client

//Envoie de la reponse au client
}
// Terminaison et fermeture socket de service 
shutdown(socketService, 2);
}
//Fermeture de la socket d'écoute
close(socketService);

  return 0;
}