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Source code

  1 #include <stdio.h>
  2 #include <string.h>
  3 #include <sys/types.h>
  4 #include <sys/socket.h>
  5 #include <netdb.h>
  6 #include <arpa/inet.h>
  7 #include <errno.h>
  8 
  9 int main(int argc, char *argv[]){
 10         struct addrinfo aiHints, *aiResults;
 11         int fdSocket;
 12         int returnValue;
 13         char szBuff[1024];
 14 
 15         snprintf(szBuff, 20, "TESTMSG\0");
 16 
 17         memset(&aiHints, 0, sizeof aiHints);
 18 
 19         aiHints.ai_family = AF_UNSPEC;
 20         aiHints.ai_socktype = SOCK_DGRAM;
 21         aiHints.ai_flags = AI_PASSIVE;
 22 
 23 //      getaddrinfo("fe80::21b:77ff:fe80:bb97", "16782", &aiHints, &aiResults); // ipv6 hardcoded
 24         getaddrinfo(NULL, "16782", &aiHints, &aiResults);
 25 
 26         fdSocket = socket(aiResults->ai_family, aiResults->ai_socktype, aiResults->ai_protocol);
 27         if(fdSocket == -1) perror("ERROR: socket(): ");
 28         printf("socket() returned: %d\n", fdSocket);
 29         returnValue = sendto(fdSocket, (const char*)szBuff, strlen(szBuff),0, (struct sockaddr*)aiResults, sizeof (struct sockaddr));
 30         printf("sendto() returned: %d\n", returnValue);
 31         perror("sendto() ERROR: ");
 32 
 33         return 0;
 34 }
~

Source code

  1 #include <stdio.h>
  2 #include <string.h>
  3 #include <sys/socket.h>
  4 #include <sys/types.h>
  5 #include <netdb.h>
  6 #include <arpa/inet.h>
  7 #include <errno.h>
  8 
  9 int main(int argc, char** argv){
 10         short sMyPort = 16782;
 11         int fdSocket;
 12         int returnValue;
 13 
 14         char szMessageBuffer[4096];
 15 
 16         struct addrinfo aiMyAddress, *aiResults;
 17 
 18         memset(&aiMyAddress, 0, sizeof aiMyAddress);
 19 
 20         aiMyAddress.ai_family = AF_UNSPEC;
 21         aiMyAddress.ai_socktype = SOCK_DGRAM;
 22         aiMyAddress.ai_flags = AI_PASSIVE;
 23 
 24         getaddrinfo(NULL, "16782", &aiMyAddress, &aiResults);
 25 
 26         fdSocket = socket(aiResults->ai_family, aiResults->ai_socktype, aiResults->ai_protocol);
 27         if(fdSocket == -1) perror("ERROR: socket(): ");
 28         printf("socket() returned: %d\n", fdSocket);
 29 
 30 
 31         returnValue = bind(fdSocket, aiResults->ai_addr, aiResults->ai_addrlen);
 32         if(returnValue == -1) perror("ERROR: bind(): ");
 33         printf("bind() returned: %d\n", returnValue);
 34 
 35         do{
 36                 recvfrom(fdSocket, szMessageBuffer, 4095, 0, NULL, NULL);
 37                 printf("RECEIVED: %s\n", szMessageBuffer);
 38         } while(strcmp(szMessageBuffer, "QUITYOUFUCK") != 0);
 39 
 40 return 0;
 41 }