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get_buf.c
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get_buf.c
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
void error_handling(char *message);
int main(int argc, char *argv[])
{
int sock;
int snd_buf, rcv_buf, state;
socklen_t len;
sock = socket(PF_INET, SOCK_STREAM, 0);
len = sizeof(snd_buf);
state = getsockopt(sock, SOL_SOCKET, SO_SNDBUF, (void *)&snd_buf, &len);
if (state)
error_handling("getsockopt() error");
len = sizeof(rcv_buf);
state = getsockopt(sock, SOL_SOCKET, SO_RCVBUF, (void *)&rcv_buf, &len);
if (state)
error_handling("getsockopt() error");
printf("Input buffer size: %d \n", rcv_buf);
printf("Output buffer size: %d \n", snd_buf);
return 0;
}
void error_handling(char *message)
{
fputs(message, stderr);
fputc('\n', stderr);
exit(1);
}