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Fix possible non null-terminated string issue in socket sample (#1612)

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Wenyong Huang 2022-10-17 22:45:10 +08:00 committed by GitHub
parent 7cc7b56f88
commit ace05b182d
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1 changed files with 3 additions and 3 deletions
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6
samples/socket-api/wasm-src/multicast_client.c
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@ -53,7 +53,7 @@ main(int argc, char *argv[])
struct ip_mreq ipv4_group; struct ip_mreq ipv4_group;
int sd; int sd;
int datalen; int datalen;
char databuf[1024]; char databuf[1024] = { 0 };
char multicast_addr_buffer[16]; char multicast_addr_buffer[16];
struct sockaddr_storage local_address = { 0 }; struct sockaddr_storage local_address = { 0 };
int addr_type = -1; int addr_type = -1;
@ -116,7 +116,7 @@ main(int argc, char *argv[])
printf("Joined multicast group. Waiting for datagram...\n"); printf("Joined multicast group. Waiting for datagram...\n");
datalen = sizeof(databuf); datalen = sizeof(databuf) - 1;
read_result = read(sd, databuf, datalen); read_result = read(sd, databuf, datalen);
if (read_result < 0) { if (read_result < 0) {
@ -132,4 +132,4 @@ main(int argc, char *argv[])
fail: fail:
close(sd); close(sd);
return EXIT_FAILURE; return EXIT_FAILURE;
} }