File size: 2,222 Bytes
c7436b1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | /*
* sock_echo.c
*
* Created on: Mar 16, 2015
* Author: Gideon
*/
#include "ipv4/lwip/inet.h"
#include "socket.h"
#include <stdio.h>
#include "FreeRTOS.h"
#include "FreeRTOSConfig.h"
#include "task.h"
#include "semphr.h"
#define fcntl(a,b,c) lwip_fcntl(a,b,c)
static void echo_run()
{
int lSocket;
struct sockaddr_in sLocalAddr;
lSocket = lwip_socket(AF_INET, SOCK_STREAM, 0);
if (lSocket < 0) {
puts("lSocket < 0");
return;
}
memset((char *)&sLocalAddr, 0, sizeof(sLocalAddr));
sLocalAddr.sin_family = AF_INET;
sLocalAddr.sin_len = sizeof(sLocalAddr);
sLocalAddr.sin_addr.s_addr = 0L; //htonl(IP_ADDR_ANY);
sLocalAddr.sin_port = htons(23);
if (lwip_bind(lSocket, (struct sockaddr *)&sLocalAddr, sizeof(sLocalAddr)) < 0) {
lwip_close(lSocket);
puts("bind failed");
return;
}
if ( lwip_listen(lSocket, 20) != 0 ) {
lwip_close(lSocket);
puts("listen failed");
return;
}
while (1) {
int clientfd;
struct sockaddr_in client_addr;
int addrlen=sizeof(client_addr);
char buffer[1024];
int nbytes;
clientfd = lwip_accept(lSocket, (struct sockaddr*)&client_addr, (socklen_t *)&addrlen);
if (clientfd >= 0) {
puts("Accepted Echo Connection");
/*
int flags = fcntl(clientfd, F_GETFL, 0);
printf("flags = %d\n", flags);
fcntl(clientfd, F_SETFL, flags | O_NONBLOCK);
flags = fcntl(clientfd, F_GETFL, 0);
if ((flags & O_NONBLOCK) == O_NONBLOCK) {
printf("it's nonblocking");
}
else {
printf("it's blocking.");
}
*/
struct timeval tv;
tv.tv_sec = 500;
tv.tv_usec = 500;
setsockopt(clientfd, SOL_SOCKET, SO_RCVTIMEO, (char *)&tv,sizeof(struct timeval));
do {
nbytes = lwip_recv(clientfd, buffer, sizeof(buffer),0);
if (nbytes > 0)
lwip_send(clientfd, buffer, nbytes, 0);
else
lwip_send(clientfd, "#", 1, 0);
} while (nbytes != 0);
puts("Closing connection.");
lwip_close(clientfd);
}
}
lwip_close(lSocket);
puts("Socked closed.");
}
void echo_task( void *a ) {
puts("Echo task has started.");
echo_run();
puts("Echo task has ended.");
vTaskSuspend(NULL);
}
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