From 14bbb45d375b611d19494874996e94aad64cf912 Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Mon, 06 Nov 2023 17:15:05 +0800
Subject: [PATCH] add socket argments sample
---
ch2_socket/sockudp_client.c | 104 ++++++++++++++++++++++++++--------------------------
1 files changed, 52 insertions(+), 52 deletions(-)
diff --git a/ch2_socket/sockudp_client.c b/ch2_socket/sockudp_client.c
index ebe318b..3674339 100644
--- a/ch2_socket/sockudp_client.c
+++ b/ch2_socket/sockudp_client.c
@@ -1,13 +1,13 @@
/*********************************************************************************
- * Copyright: (C) 2018 LingYun IoT Studio
- * All rights reserved.
+ * Copyright: (C) 2018 LingYun IoT Studio
+ * All rights reserved.
*
- * Filename: sockudp_client.c
- * Description: This file is UDP socket client example source code.
+ * Filename: sockudp_client.c
+ * Description: This file is UDP socket client example source code.
*
- * Version: 1.0.0(10/23/2018)
- * Author: Guo Wenxue <guowenxue@gmail.com>
- * ChangeLog: 1, Release initial version on "2018-10-23 01:38:08 PM"
+ * Version: 1.0.0(10/23/2018)
+ * Author: Guo Wenxue <guowenxue@gmail.com>
+ * ChangeLog: 1, Release initial version on "2018-10-23 01:38:08 PM"
*
********************************************************************************/
#include <stdio.h>
@@ -20,59 +20,59 @@
#include <netinet/in.h>
#include <arpa/inet.h>
-#define SERVER_IP "127.0.0.1"
-#define SERVER_PORT 8890
+#define SERVER_IP "127.0.0.1"
+#define SERVER_PORT 8890
int main(int argc, char **argv)
{
- int sockfd = -1;
- int rv = -1;
- char buf[1024];
- struct sockaddr_in serv_addr;
- socklen_t addrlen = sizeof(serv_addr);
- float temp;
+ int sockfd = -1;
+ int rv = -1;
+ char buf[1024];
+ struct sockaddr_in serv_addr;
+ socklen_t addrlen = sizeof(serv_addr);
+ float temp;
- /* create UDP socket */
- sockfd = socket(AF_INET, SOCK_DGRAM, 0);
- if(sockfd < 0)
- {
- printf("create socket failure: %s\n", strerror(errno));
- return -1;
- }
+ /* create UDP socket */
+ sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+ if(sockfd < 0)
+ {
+ printf("create socket failure: %s\n", strerror(errno));
+ return -1;
+ }
- /* set socket server information */
- memset(&serv_addr, 0, sizeof(serv_addr));
- serv_addr.sin_family = AF_INET;
- serv_addr.sin_port = htons(SERVER_PORT);
- inet_aton( SERVER_IP, &serv_addr.sin_addr );
+ /* set socket server information */
+ memset(&serv_addr, 0, sizeof(serv_addr));
+ serv_addr.sin_family = AF_INET;
+ serv_addr.sin_port = htons(SERVER_PORT);
+ inet_aton( SERVER_IP, &serv_addr.sin_addr );
- while(1)
- {
- /* send message to socket server */
- strncpy(buf, "Hello, LingYun IoT socket server!", sizeof(buf));
- if( sendto(sockfd, buf, strlen(buf), 0, (struct sockaddr *)&serv_addr, addrlen) < 0 )
- {
- printf("Write data to server [%s:%d] failure: %s\n", SERVER_IP, SERVER_PORT, strerror(errno));
- break;
- }
- printf("Send message to socket server okay\n");
+ while(1)
+ {
+ /* send message to socket server */
+ strncpy(buf, "Hello, LingYun IoT socket server!", sizeof(buf));
+ if( sendto(sockfd, buf, strlen(buf), 0, (struct sockaddr *)&serv_addr, addrlen) < 0 )
+ {
+ printf("Write data to server [%s:%d] failure: %s\n", SERVER_IP, SERVER_PORT, strerror(errno));
+ break;
+ }
+ printf("Send message to socket server okay\n");
- /* receive message from socket server */
- memset(buf, 0, sizeof(buf));
- printf("Wating reply from socket server...\n");
- rv = recvfrom(sockfd, buf, sizeof(buf), 0, (struct sockaddr *)&serv_addr, &addrlen);
- if(rv < 0)
- {
- printf("Read data from server failure: %s\n", strerror(errno));
- break;
- }
- printf("Receive [%d] bytes data from server: %s", rv, buf);
- printf("\n");
+ /* receive message from socket server */
+ memset(buf, 0, sizeof(buf));
+ printf("Wating reply from socket server...\n");
+ rv = recvfrom(sockfd, buf, sizeof(buf), 0, (struct sockaddr *)&serv_addr, &addrlen);
+ if(rv < 0)
+ {
+ printf("Read data from server failure: %s\n", strerror(errno));
+ break;
+ }
+ printf("Receive [%d] bytes data from server: %s", rv, buf);
+ printf("\n");
- sleep(3);
- }
+ sleep(3);
+ }
- close(sockfd);
- return 0;
+ close(sockfd);
+ return 0;
}
--
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