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Merge pull request #135 from DavidLin1577/patch-6

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Fixed some stackover flow bugs in  tcp_client.c/tcp_server.c
This commit is contained in:
Supowang1989
2020-04-13 10:19:42 +08:00
committed by GitHub
parent 4beb1b019f 23313e8567
commit cdff2bd2e9
2 changed files with 14 additions and 6 deletions
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6
examples/tcp_udp_base_lwip/tcp_client/tcp_client.c
View File

@@ -23,7 +23,11 @@ void application_entry(void *arg)
MX_LWIP_Init(); MX_LWIP_Init();
while (1) { while (1) {
socketfd = socket(AF_INET, SOCK_STREAM, 0); if ((socketfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
printf("create socket error %s errno: %d\n", strerror(errno), errno);
goto tcp_client_exit;
}
setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(struct timeval)); setsockopt(socketfd, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(struct timeval));
memset(&sockaddr, 0, sizeof(sockaddr)); memset(&sockaddr, 0, sizeof(sockaddr));

6
examples/tcp_udp_base_lwip/tcp_server/tcp_server.c
View File

@@ -48,8 +48,13 @@ void application_entry(void *arg)
} }
n = recv(connfd, buff, sizeof(buff), 0); n = recv(connfd, buff, sizeof(buff), 0);
if(n > 0) {
buff[n] = '\0'; buff[n] = '\0';
printf("recv(%d) msg from client:%s\n", ++cnt, buff); printf("recv(%d) msg from client:%s\n", ++cnt, buff);
} else {
printf("recv err(%d)\n", n);
}
if ((send(connfd, buff, strlen(buff), 0)) < 0) { if ((send(connfd, buff, strlen(buff), 0)) < 0) {
printf("send msg error: %s errno : %d\n", strerror(errno), errno); printf("send msg error: %s errno : %d\n", strerror(errno), errno);
break; break;
@@ -59,4 +64,3 @@ void application_entry(void *arg)
close(listenfd); close(listenfd);
} }