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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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12
Userland/Libraries/LibHTTP/Job.cpp
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@ -85,7 +85,7 @@ void Job::flush_received_buffers()
{
if (!m_can_stream_response || m_buffered_size == 0)
return;
dbgln_if(JOB_DEBUG, "Job: Flushing received buffers: have {} bytes in {} buffers", m_buffered_size, m_received_buffers.size());
dbgln_if(JOB_DEBUG, "Job: Flushing received buffers: have {} bytes in {} buffers for {}", m_buffered_size, m_received_buffers.size(), m_request.url());
for (size_t i = 0; i < m_received_buffers.size(); ++i) {
auto& payload = m_received_buffers[i];
auto written = do_write(payload);
@ -100,7 +100,7 @@ void Job::flush_received_buffers()
payload = payload.slice(written, payload.size() - written);
break;
}
dbgln_if(JOB_DEBUG, "Job: Flushing received buffers done: have {} bytes in {} buffers", m_buffered_size, m_received_buffers.size());
dbgln_if(JOB_DEBUG, "Job: Flushing received buffers done: have {} bytes in {} buffers for {}", m_buffered_size, m_received_buffers.size(), m_request.url());
}
void Job::on_socket_connected()
@ -121,6 +121,7 @@ void Job::on_socket_connected()
deferred_invoke([this] { did_fail(Core::NetworkJob::Error::TransmissionFailed); });
});
register_on_ready_to_read([&] {
dbgln_if(JOB_DEBUG, "Ready to read for {}, state = {}, cancelled = {}", m_request.url(), to_underlying(m_state), is_cancelled());
if (is_cancelled())
return;
@ -132,9 +133,12 @@ void Job::on_socket_connected()
}
if (m_state == State::InStatus) {
if (!can_read_line())
if (!can_read_line()) {
dbgln_if(JOB_DEBUG, "Job {} cannot read line", m_request.url());
return;
}
auto line = read_line(PAGE_SIZE);
dbgln_if(JOB_DEBUG, "Job {} read line of length {}", m_request.url(), line.length());
if (line.is_null()) {
dbgln("Job: Expected HTTP status");
return deferred_invoke([this] { did_fail(Core::NetworkJob::Error::TransmissionFailed); });
@ -287,7 +291,9 @@ void Job::on_socket_connected()
}
}
dbgln_if(JOB_DEBUG, "Waiting for payload for {}", m_request.url());
auto payload = receive(read_size);
dbgln_if(JOB_DEBUG, "Received {} bytes of payload from {}", payload.size(), m_request.url());
if (payload.is_empty()) {
if (eof()) {
finish_up();