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@dflima
Created November 8, 2012 23:58
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Aula de Sockets (Concorrente) - Servidor
#include<sys/types.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<stdio.h>
#include<stdlib.h>
#define PORTA 8888
#define MAXBUF 20
#define MAXCONECT 5
main(){
int esock,nsock, test;
struct sockaddr_in server;
struct sockaddr_in client;
int tam;
char buffer[MAXBUF];
/* cria o socket */
if ((esock = socket(AF_INET, SOCK_STREAM, 0)) < 0){
perror("Erro na criacao do socket no servidor");
exit(1);
}
/* inicializa a estrutura endereco/porta */
server.sin_family = AF_INET;
server.sin_port = htons(PORTA);
server.sin_addr.s_addr = INADDR_ANY;
bzero(&(server.sin_zero), 8);
/* associa um número de porta ao socket */
if(bind(esock, (struct sockaddr*)&server, sizeof(struct sockaddr))<0){
perror("Erro na associacao do socket (Bind)");
exit(1);
}
/* coloca o socket em modo "listening"*/
test = listen(esock, MAXCONECT);
if (test < 0){
perror("\nErro na funcao listen.");
exit(1);
}
tam = sizeof(struct sockaddr_in);
nsock = accept(esock,(struct sockaddr *)&client,&tam);
if(nsock < 0) {
perror("Erro no accept");
//continue;
}
printf("Cliente conectado em %s\n", inet_ntoa(client.sin_addr));
while(1) {
if(recv(nsock,buffer,sizeof(buffer),0)<0){
perror("Erro no recebimento de dados");
exit(1);
}
printf("\n O outro disse: %s\n", buffer);
printf("\n Eu: ");
gets(buffer);
/* envia uma mensagem */
if(send(nsock, buffer, sizeof(buffer),0)<0){
perror("Erro no envio de dados");
exit(1);
}
}
close(nsock);
}
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