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Add announce_port support

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The `announce_port` setting permits to overwrite the port passed along to trackers as the `&port=` parameter. If left as the default, the listening port is used. This setting is only meant for very special cases where a seed's listening port differs from the effectively exposed port (e.g., through external NAT-PMP). See https://github.com/arvidn/libtorrent/pull/7771 for an example use-case.

This PR adds the relevant setting alongside the existing `announce_ip` setting.

PR #21692.
This commit is contained in:
Maxime Thiebaut 2025-02-08 09:12:50 +01:00 • committed by GitHub
parent 9c2e698514
commit 4406a3f173
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7 changed files with 53 additions and 1 deletions
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19
src/base/bittorrent/sessionimpl.cpp
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@ -445,6 +445,7 @@ SessionImpl::SessionImpl(QObject *parent)
, m_ignoreLimitsOnLAN(BITTORRENT_SESSION_KEY(u"IgnoreLimitsOnLAN"_s), false)
, m_includeOverheadInLimits(BITTORRENT_SESSION_KEY(u"IncludeOverheadInLimits"_s), false)
, m_announceIP(BITTORRENT_SESSION_KEY(u"AnnounceIP"_s))
, m_announcePort(BITTORRENT_SESSION_KEY(u"AnnouncePort"_s), 0)
, m_maxConcurrentHTTPAnnounces(BITTORRENT_SESSION_KEY(u"MaxConcurrentHTTPAnnounces"_s), 50)
, m_isReannounceWhenAddressChangedEnabled(BITTORRENT_SESSION_KEY(u"ReannounceWhenAddressChanged"_s), false)
, m_stopTrackerTimeout(BITTORRENT_SESSION_KEY(u"StopTrackerTimeout"_s), 2)
@ -2004,6 +2005,10 @@ lt::settings_pack SessionImpl::loadLTSettings() const
settingsPack.set_bool(lt::settings_pack::rate_limit_ip_overhead, includeOverheadInLimits());
// IP address to announce to trackers
settingsPack.set_str(lt::settings_pack::announce_ip, announceIP().toStdString());
#if LIBTORRENT_VERSION_NUM >= 20011
// Port to announce to trackers
settingsPack.set_int(lt::settings_pack::announce_port, announcePort());
#endif
// Max concurrent HTTP announces
settingsPack.set_int(lt::settings_pack::max_concurrent_http_announces, maxConcurrentHTTPAnnounces());
// Stop tracker timeout
@ -4879,6 +4884,20 @@ void SessionImpl::setAnnounceIP(const QString &ip)
}
}
int SessionImpl::announcePort() const
{
return m_announcePort;
}
void SessionImpl::setAnnouncePort(const int port)
{
if (port != m_announcePort)
{
m_announcePort = port;
configureDeferred();
}
}
int SessionImpl::maxConcurrentHTTPAnnounces() const
{
return m_maxConcurrentHTTPAnnounces;