Listen: Operation Not supported error
I am working on a raw sockets program in Ubuntu using C programming language. As I am using raw sockets, I need to use the SOCK_RAW type instead of SOCK_STREAM. Using SOCK_RAW in turn disables me from using the listen() by throwing a
"Listen:Operation not supported error".
What do I do to rectify this? Below is the code I am working on:
<header files>
.
.
if((sock=socket(AF_INET,SOCK_RAW,IPPROTO_RAW))==-1)
{
perror("Socket");
exit(1);
}
if(setsockopt(sock,SOL_SOCKET,SO_BROADCAST,&true,sizeof(true))==-1)
{
perror("Setsockopt");
exit(1);
}
server_addr.sin_family=AF_INET;
server_addr.sin_port=htons(9392);
server_addr.sin_addr.s_addr=INADDR_ANY;
bzero(&(server_addr.sin_zero),8);
if(bind(sock,(struct sockaddr *)&server_addr,sizeof(struct sockaddr))==-1)
{
perror("Unable to bind");
exit(1);
}
if(listen(sock,5)==-1)
{
perror("Listen");
exit(1);
}
printf("\nTCP Server waiting for client on port 9392");
fflush(stdout);
while(1)
{
sin_size=sizeof(struct sockaddr_in);
connected=accept(sock,(struct sockaddr *)&client_addr,&sin_size);
printf("\nI got a connection from (%s,%d)",inet_ntoa(client_addr.sin_addr),ntohs(client_addr.sin_port));
while(1)
{
printf("\nSEND (q or Q to quit):");
scanf("%s",send_data);
if(strcmp(send_data,"q")==0||strcmp(send_data,"Q")==0)
{
send(connected,send_data,strlen(send_data),0);
close(connected);
exit(0);
}
else
send(connected,send_data,strlen(send_data),0);
bytes_recieved=recv(connected,recv_data,1024,0);
recv_data[bytes_recieved]='\0';
.
.
.
.
