Created
November 8, 2012 23:58
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Aula de Sockets (Concorrente) - Servidor
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#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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