a36cec2ff1
This is minor optimisation to the tcp_client code: Note that two lines, one is 'send mes error', the other is 'recv msg from server', the first 'mes' should be 'msg', for short. The code is more readable.
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
#include "tcp_client.h"
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "lwip/api.h"
|
|
#include <lwip/sockets.h>
|
|
#include <lwip/err.h>
|
|
#include <lwip/sys.h>
|
|
#include <errno.h>
|
|
|
|
char recvline[512];
|
|
|
|
const char *str = "Welcome to TencentOS Tiny!";
|
|
const char *server_ip = "182.254.196.11";
|
|
const unsigned short server_port = 8087;
|
|
|
|
void application_entry(void *arg)
|
|
{
|
|
int socketfd, len;
|
|
static int cnt=0;
|
|
struct sockaddr_in sockaddr;
|
|
struct timeval tv = {10, 0};
|
|
|
|
MX_LWIP_Init();
|
|
|
|
while (1) {
|
|
socketfd = socket(AF_INET, SOCK_STREAM, 0);
|
|
setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(struct timeval));
|
|
memset(&sockaddr, 0, sizeof(sockaddr));
|
|
|
|
sockaddr.sin_addr.s_addr = inet_addr(server_ip);
|
|
sockaddr.sin_family = AF_INET;
|
|
sockaddr.sin_port = htons(server_port);
|
|
|
|
if ((connect(socketfd, (struct sockaddr*)&sockaddr, sizeof(sockaddr))) < 0) {
|
|
printf("connect error %s errno: %d\n", strerror(errno), errno);
|
|
goto tcp_client_exit;
|
|
}
|
|
|
|
printf("send(%d): %s:%d :%s\n", ++cnt, server_ip, server_port, str);
|
|
if ((send(socketfd, str, strlen(str), 0)) < 0) {
|
|
printf("send msg error: %s errno : %d\n", strerror(errno), errno);
|
|
goto tcp_client_exit;
|
|
}
|
|
|
|
len = recv(socketfd, recvline, sizeof(recvline), 0);
|
|
if (len > 0) {
|
|
recvline[len] = '\0';
|
|
printf("recv msg from server: %s\n", recvline);
|
|
} else {
|
|
printf("recv err(%d)\n", len);
|
|
}
|
|
|
|
close(socketfd);
|
|
tos_task_delay(1000);
|
|
}
|
|
|
|
tcp_client_exit:
|
|
printf("exit\n");
|
|
}
|
|
|