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Qt: Ask user to use standard port on startup if specified port is in use

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If the port (specified by -port or GUI setting) is already in use when
starting the GUI client, and it's not the standard port, ask the user if
they want to listen via the standard network port instead.

Github-Pull: #7107
Rebased-From: 1f37c87d8f2fbb7113c38674d1cc65933a222ccb
This commit is contained in:
Hampus Sjöberg 2016-09-05 23:56:50 +02:00 committed by Luke Dashjr
parent 1684b30abe
commit f29a7dd518
1 changed files with 23 additions and 1 deletions
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24
src/net.cpp
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@ -3224,7 +3224,29 @@ bool CConnman::InitBinds(const Options& options)
inaddr_any.s_addr = htonl(INADDR_ANY);
const CService ipv4_any{inaddr_any, GetListenPort()}; // 0.0.0.0
if (!Bind(ipv4_any, BF_REPORT_ERROR, NetPermissionFlags::None)) {
return false;
int defaultPort = Params().GetDefaultPort();
// If listening failed and another port than the standard port was specified,
// ask if the user wants to connect via the standard port for the network instead
if (GetListenPort() != defaultPort) {
bool fRet = uiInterface.ThreadSafeQuestion(
strprintf(_("Do you want to use the standard network port for %s (port %s) instead?"), PACKAGE_NAME, defaultPort),
strprintf(_("Listen on port %s failed.").translated, GetListenPort()),
"", CClientUIInterface::MSG_INFORMATION | CClientUIInterface::MODAL | CClientUIInterface::BTN_OK | CClientUIInterface::BTN_ABORT);
if (fRet) {
// FIXME: Unbind IPv6 on the other port
gArgs.ForceSetArg("-port", defaultPort);
// Attempt to use standard port
struct in6_addr inaddr6_any = IN6ADDR_ANY_INIT;
Bind(CService(inaddr6_any, defaultPort), BF_NONE, NetPermissionFlags::None);
struct in_addr inaddr_any;
inaddr_any.s_addr = INADDR_ANY;
if (!Bind(CService(inaddr_any, defaultPort), BF_REPORT_ERROR, NetPermissionFlags::None)) {
return false;
}
}
}
}
}
return true;