106 lines
No EOL
3.3 KiB
C
106 lines
No EOL
3.3 KiB
C
//
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// Keszitette: Toldi Balázs Ádám
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// Datum: 2019. 10. 28.
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//
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#include "tcp-listener.h"
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struct addrinfo* tcp_createIPv4Socket(SOCKET *s,int port,bool wildcard){
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struct addrinfo hint;
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struct addrinfo *result = NULL;
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memset(&hint, 0, sizeof(struct addrinfo));
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hint.ai_protocol = IPPROTO_TCP;
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hint.ai_socktype = SOCK_STREAM;
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hint.ai_family = AF_INET;
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if(wildcard)
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hint.ai_flags = AI_PASSIVE;
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hint.ai_canonname = NULL;
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hint.ai_addr = NULL;
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hint.ai_next = NULL;
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//TODO: Use Config to determine port
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char sport[10];
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sprintf( sport, "%d", port);
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int res = getaddrinfo(NULL, sport, &hint, &result);
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if (res != 0) {
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logger_log("Error creating address information! Error code: %d", WSAGetLastError());
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WSACleanup();
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return NULL;
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}
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//Creating listening socket
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*s = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
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if (*s == INVALID_SOCKET) {
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logger_log("Error creating socket! Error: %d", WSAGetLastError());
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WSACleanup();
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return NULL;
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}
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return result;
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}
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int tcp_bindnlisten(SOCKET s,struct addrinfo* addr,int conn_count){
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int res = bind(s, addr->ai_addr, addr->ai_addrlen);
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if (res == SOCKET_ERROR) {
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logger_log("Error binding socket!");
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int r = WSAGetLastError();
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switch(r){
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case WSAENETDOWN:
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logger_log("The network subsystem has failed.");
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break;
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case WSAEADDRINUSE:
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logger_log("Port already in use.");
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break;
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case WSAEACCES:
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logger_log("An attempt was made to access a socket in a way forbidden by its access permissions.");
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break;
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case WSAEADDRNOTAVAIL:
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logger_log("The requested address is not valid in its context.");
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break;
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case WSAEFAULT:
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logger_log("The system detected an invalid pointer address in attempting to use a pointer argument in a call.");
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break;
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case WSAEINPROGRESS:
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logger_log("A blocking Windows Sockets 1.1 call is in progress, or the service provider is still processing a callback function.");
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break;
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case WSAEINVAL:
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logger_log("This socket is already bound to an address.");
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break;
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case WSAENOBUFS:
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logger_log("Not enough buffers are available or there are too many connections!");
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break;
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default:
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logger_log("Error: %d",WSAGetLastError());
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break;
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}
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freeaddrinfo(addr);
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WSACleanup();
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return 1;
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}
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freeaddrinfo(addr);
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res = listen(s, conn_count);
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if (res == -1) {
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logger_log("Error starting listening! Error: %d", WSAGetLastError());
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closesocket(s);
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WSACleanup();
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return 2;
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}
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return 0;
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}
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struct sockaddr_in tcp_getAddr_in(SOCKET s) {
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struct sockaddr_in sin;
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socklen_t len = sizeof(sin);
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if (getsockname(s, (struct sockaddr *) &sin, &len) == -1) {
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logger_log("Error at getsockname!Error code: %d", WSAGetLastError());
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closesocket(s);
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exit(1);
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}
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return sin;
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}
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int tcp_getSockPort(SOCKET s){
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struct sockaddr_in sin = tcp_getAddr_in(s);
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return ntohs(sin.sin_port);
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} |