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  1. #include <sys/socket.h>
  2.  
  3. const char* getIpProtocolId(int sock){
  4.     int proto;
  5.     socklen_t proto_len = sizeof(proto);
  6.     int res = getsockopt(sock,SOL_SOCKET,SO_TYPE,
  7.             &proto,&proto_len);
  8.  
  9.     if ( res == 0 ) switch(proto){
  10.         case SOCK_STREAM: return "tcp";
  11.         case SOCK_DGRAM:  return "udp";
  12.         default: break;
  13.     }
  14.  
  15.     return "unknown";
  16. }
  17.  
  18.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/lib/gcc/i486-linux-gnu/4.8/../../../i386-linux-gnu/crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/U0O6qi
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
secret

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