From dde12e90020d6a426ab12c8c1e9dba22f14bcc7e Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Wed, 26 Nov 2025 09:59:54 +0800
Subject: [PATCH] Update mqttd project for new JSON string
---
ch2.socket/udps.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/ch2.socket/udps.c b/ch2.socket/udps.c
index 6f11f2f..51c1b61 100644
--- a/ch2.socket/udps.c
+++ b/ch2.socket/udps.c
@@ -71,7 +71,7 @@
/* send message to socket client */
printf("Reply back to socket client...\n");
snprintf(buf, sizeof(buf), "Hello, socket client [%s:%d]\n", inet_ntoa(cli_addr.sin_addr), ntohs(cli_addr.sin_port));
- if( (rv=sendto(sockfd, buf, sizeof(buf), 0, (struct sockaddr *)&cli_addr, addr_len)) < 0)
+ if( (rv=sendto(sockfd, buf, strlen(buf), 0, (struct sockaddr *)&cli_addr, addr_len)) < 0)
{
printf("Reply back to socket client[%d] failure: %s\n", sockfd, strerror(errno));
break;
--
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