Ten blb čeká že po odpojení klienta se znovu spustí naslouchání -_-
/*
C socket server example
*/
#include<stdio.h>
#include<string.h> //strlen
#include<sys/socket.h>
#include<arpa/inet.h> //inet_addr
#include<unistd.h> //write
#include<fcntl.h>
#include<sys/ioctl.h>
#include<netinet/in.h>
#include <wiringPi.h>
#include <wiringSerial.h>
int main(int argc , char *argv[])
{
int socket_desc , client_sock , c , read_size;
struct sockaddr_in server , client;
char client_message[200];
//Create socket
socket_desc = socket(AF_INET , SOCK_STREAM, 0);
if (socket_desc == -1)
{
printf("Could not create socket");
}
puts("Socket created");
//Prepare the sockaddr_in structure
server.sin_family = AF_INET;
server.sin_addr.s_addr = INADDR_ANY;
server.sin_port = htons( 8888 );
//Bind
if( bind(socket_desc,(struct sockaddr *)&server , sizeof(server)) < 0)
{
//print the error message
perror("bind failed. Error");
return 1;
}
puts("bind done");
//Listen
listen(socket_desc , 3);
//Accept and incoming connection
puts("Waiting for incoming connections...");
c = sizeof(struct sockaddr_in);
//accept connection from an incoming client
client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
if (client_sock < 0)
{
perror("accept failed");
return 1;
}
puts("Connection accepted");
//Receive a message from client
while( (read_size = recv(client_sock , client_message , sizeof(client_message) , 0)) > 0 )
{
//Non-blocking Socket
ioctl(socket_desc, FIONBIO, (char *)&c);
//Terminal print control
puts(client_message);
//Send the message back to client
write(client_sock , client_message , strlen(client_message));
//SERIAL Connect
int serial = serialOpen ("/dev/ttyS0", 9600);
//SERIAL Send
serialPrintf (serial, client_message) ;
//Clear Buffer - client_message
memset(client_message, 0, sizeof client_message);
}
if(read_size == 0)
{
puts("Client disconnected");
fflush(stdout);
}
else if(read_size == -1)
{
perror("recv failed");
}
return 0;
}