HRESULT StartListening()
{
HRESULT hr = S_OK;
LogMessage("StartListening: started");
//
// enumerate available addresses
//
IEnumAddress *pEnumAddress = NULL;
hr = g_pTapi->EnumerateAddresses( &pEnumAddress );
if (FAILED(hr))
{
LogError("StartListening: Failed to enumerate addresses");
return hr;
}
//
// this flag remains false until we succeded starting listening on at
// least one address
//
BOOL bListenStarted = FALSE;
//
// walk through all the addresses and start listening on the ones that
// support audio
//
while (TRUE)
{
//
// check the next address
//
ITAddress *pAddress = NULL;
hr = pEnumAddress->Next(1, &pAddress, NULL);
if (S_OK != hr)
{
//
// no more addresses or error
//
break;
}
//
// log the name of the address
//
BSTR bstrAddressName;
hr = pAddress->get_AddressName(&bstrAddressName);
if (SUCCEEDED(hr))
{
LogMessage("StartListening: -> found address [%S]",
bstrAddressName);
SysFreeString(bstrAddressName);
}
else
{
LogError("StartListening: failed to get address name");
}
//
// if the address supports audio and media streaming terminal,
// start listening
//
if ( AddressSupportsAudio(pAddress) && AddressSupportsMST(pAddress) )
{
//
// start listening on this address
//
LogMessage("StartListening: Starting listening.");
hr = ListenOnAddress(pAddress);
if (SUCCEEDED(hr))
{
//
// we are listening on at least one address
//
bListenStarted = TRUE;
LogMessage("StartListening: "
"-> started listening on this address");
}
else
{
//
// log an error and continue
//
LogError("StartListening: -> failed starting listening on this address, "
"hr = 0x%lx", hr);
}
}
else
{
LogMessage("StartListening: -> no audio or MST support on this address.");
}
pAddress->Release();
pAddress = NULL;
}
pEnumAddress->Release();
pEnumAddress = NULL;
//
// depending on whether we started listening or not, log a message and
// return the appropriate error code.
//
if (bListenStarted)
{
LogMessage("StartListening: completed. "
"Listening on one or more addresses");
return S_OK;
}
else
{
LogMessage("StartListening: completed. Not listening on any address.");
return E_FAIL;
}
}
int AddSocketAddress(char* addr)
{
SOCKET *s = SocketList + numsockets;
int rc, result;
size_t len = strlen(addr) + 1;
if (len > 256) return FALSE;
char *addrcopy = alloca(len);
memcpy(addrcopy, addr, len);
char *szHost = addrcopy;
char *szPort = defaultport;
char *lastcolon = strrchr(addrcopy, ':');
char *firstcolon = strchr(addrcopy, ':');
char *closingbracket = strstr(addrcopy, "]:");
if (*addrcopy == '[' && closingbracket) //IPv6 address with port
{
*closingbracket = 0;
szHost++;
szPort = closingbracket + 2;
}
else if (firstcolon && firstcolon == lastcolon) //IPv4 address with port
{
*firstcolon = 0;
szPort = firstcolon + 1;
}
struct addrinfo hints;
struct addrinfo *saList, *sa;
memset(&hints, 0, sizeof(struct addrinfo));
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
if ((rc = getaddrinfo(szHost, szPort, &hints, &saList)))
{
fprintf(stderr, "Warning: %s: %s\n", addr, gai_strerror(rc));
return FALSE;
}
for (sa = saList; sa; sa = sa->ai_next)
{
// struct sockaddr_in* addr4 = (struct sockaddr_in*)sa->ai_addr;
// struct sockaddr_in6* addr6 = (struct sockaddr_in6*)sa->ai_addr;
if (sa->ai_family != AF_INET && sa->ai_family != AF_INET6) continue;
if (!ListenOnAddress(sa, s, szHost, szPort))
{
numsockets++;
result = TRUE;
}
}
freeaddrinfo(saList);
return result;
}
