Attachment 247055 Details for Bug 275774 – udptest_recv

udptest_recv

udptest_recv.c (text/plain), 999 bytes, created by Emmanuel Vadot on 2023-12-15 12:25:34 UTC

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Creator: Emmanuel Vadot

Created: 2023-12-15 12:25:34 UTC

Size: 999 bytes

patch

obsolete

>#include <sys/types.h>
>#include <sys/socket.h>
>#include <netinet/in.h>
>#include <arpa/inet.h>
>#include <stdio.h>
>#include <string.h>
>
>int main() {
>   struct sockaddr_in sa4 = { 0 };
>   struct sockaddr_in sa4recv;
>
>   int optval = 0;
>   int sock;
>   char buffer[20] = { 0 };
>
>   sa4.sin_family = AF_INET;
>   sa4.sin_port = htons(1234);
>   sa4.sin_addr.s_addr = htonl(INADDR_ANY);
>
>   sock = socket(AF_INET, SOCK_DGRAM, 0);
>
>   if (bind(sock, (const struct sockaddr*)&sa4, sizeof(sa4)) < 0) {
>      return -1;
>   }
>   for (;;) {
>      socklen_t len = sizeof(sa4recv);
>      int n = recvfrom(sock, (char*)buffer, sizeof(buffer), MSG_WAITALL, (struct sockaddr*)&sa4recv, &len);
>      if (n > 0) {
>         char ip_str[INET_ADDRSTRLEN];
>         if (inet_ntop(AF_INET, &(sa4recv.sin_addr), ip_str, INET_ADDRSTRLEN) != NULL) {
>            printf("message %s received from %s\n", buffer, ip_str);
>         }
>         sendto(sock, buffer, n, 0, (struct sockaddr*)&sa4recv, len);
>      }
>   }
>   return 0;
>}

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Attachments on bug 275774: 247054 | 247055 | 247056