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RequestServer+LibHTTP+LibGemini: Cache connections to the same host

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This makes connections (particularly TLS-based ones) do the handshaking
stuff only once.
Currently the cache is configured to keep at most two connections evenly
balanced in queue size, and with a grace period of 10s after the last
queued job has finished (after which the connection will be dropped).
This commit is contained in:
Ali Mohammad Pur 2021-09-18 03:48:22 +04:30 • committed by Ali Mohammad Pur
parent c5d7eb8618
commit 65f7e45a75
22 changed files with 295 additions and 51 deletions
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33
Userland/Libraries/LibHTTP/HttpsJob.cpp
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@ -14,15 +14,12 @@
namespace HTTP {
void HttpsJob::start()
void HttpsJob::start(NonnullRefPtr<Core::Socket> socket)
{
VERIFY(!m_socket);
m_socket = TLS::TLSv12::construct(this);
m_socket->set_root_certificates(m_override_ca_certificates ? *m_override_ca_certificates : DefaultRootCACertificates::the().certificates());
m_socket->on_tls_connected = [this] {
dbgln_if(HTTPSJOB_DEBUG, "HttpsJob: on_connected callback");
on_socket_connected();
};
VERIFY(is<TLS::TLSv12>(*socket));
m_socket = static_ptr_cast<TLS::TLSv12>(socket);
m_socket->on_tls_error = [&](TLS::AlertDescription error) {
if (error == TLS::AlertDescription::HandshakeFailure) {
deferred_invoke([this] {
@ -46,11 +43,22 @@ void HttpsJob::start()
if (on_certificate_requested)
on_certificate_requested(*this);
};
bool success = ((TLS::TLSv12&)*m_socket).connect(m_request.url().host(), m_request.url().port_or_default());
if (!success) {
deferred_invoke([this] {
return did_fail(Core::NetworkJob::Error::ConnectionFailed);
});
if (m_socket->is_established()) {
dbgln("Reusing previous connection for {}", url());
deferred_invoke([this] { on_socket_connected(); });
} else {
dbgln("Creating a new connection for {}", url());
m_socket->set_root_certificates(m_override_ca_certificates ? *m_override_ca_certificates : DefaultRootCACertificates::the().certificates());
m_socket->on_tls_connected = [this] {
dbgln_if(HTTPSJOB_DEBUG, "HttpsJob: on_connected callback");
on_socket_connected();
};
bool success = ((TLS::TLSv12&)*m_socket).connect(m_request.url().host(), m_request.url().port_or_default());
if (!success) {
deferred_invoke([this] {
return did_fail(Core::NetworkJob::Error::ConnectionFailed);
});
}
}
}
@ -60,7 +68,6 @@ void HttpsJob::shutdown()
return;
m_socket->on_tls_ready_to_read = nullptr;
m_socket->on_tls_connected = nullptr;
remove_child(*m_socket);
m_socket = nullptr;
}