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Tune IP look up code

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This commit is contained in:
Peter L Jones 2020-04-10 09:15:41 +01:00
parent 2d59e869bc
commit 942bdde3a5
2 changed files with 8 additions and 2 deletions
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6
src/global.h
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@ -110,6 +110,12 @@ LED bar: lbr
// download URL
#define LLCON_DOWNLOAD_URL "http://sourceforge.net/projects/llcon/files"
// determining server internal address uses well-known host and port
// (Google DNS, or something else reliable)
#define WELL_KNOWN_HOST "8.8.8.8" // Google
#define WELL_KNOWN_PORT 53 // DNS
#define IP_LOOKUP_TIMEOUT 500 // ms
// defined port number for client and server
#if ( SYSTEM_FRAME_SIZE_SAMPLES == 64 )
# define LLCON_DEFAULT_PORT_NUMBER 22064 // different port number for 64 samples frame size version

4
src/util.cpp
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@ -893,8 +893,8 @@ bool NetworkUtil::ParseNetworkAddress ( QString strAddress,
CHostAddress NetworkUtil::GetLocalAddress()
{
QTcpSocket socket;
socket.connectToHost("8.8.8.8", 53); // google DNS, or something else reliable
if (socket.waitForConnected()) {
socket.connectToHost( WELL_KNOWN_HOST, WELL_KNOWN_PORT );
if (socket.waitForConnected( IP_LOOKUP_TIMEOUT )) {
return CHostAddress( socket.localAddress(), 0 );
} else {
qWarning()