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h2load: Fix possible deadlock

This commit is contained in:
Tatsuhiro Tsujikawa 2019-06-15 14:41:25 +09:00
parent e9d5c5a489
commit 1bd57360c7
1 changed files with 29 additions and 3 deletions
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32
src/h2load_quic.cc
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@ -962,20 +962,46 @@ int Client::write_quic() {
return -1;
}
auto s = static_cast<Http3Session *>(session.get());
std::array<nghttp3_vec, 16> vec;
std::array<uint8_t, 1500> buf;
ngtcp2_path_storage ps;
ngtcp2_path_storage_zero(&ps);
if (!session) {
auto nwrite =
ngtcp2_conn_write_pkt(quic.conn, &ps.path, buf.data(), quic.max_pktlen,
timestamp(worker->loop));
if (nwrite < 0) {
quic.last_error = quic::err_transport(nwrite);
return -1;
}
quic_restart_pkt_timer();
if (nwrite) {
write_udp(reinterpret_cast<sockaddr *>(ps.path.remote.addr),
ps.path.remote.addrlen, buf.data(), nwrite);
ev_io_start(worker->loop, &wev);
return 0;
}
// session might be initialized during ngtcp2_conn_write_pkt.
if (!session) {
ev_io_stop(worker->loop, &wev);
return 0;
}
}
auto s = static_cast<Http3Session *>(session.get());
for (;;) {
int64_t stream_id;
int fin;
ssize_t sveccnt = 0;
if (s && ngtcp2_conn_get_max_data_left(quic.conn)) {
if (ngtcp2_conn_get_max_data_left(quic.conn)) {
sveccnt = s->write_stream(stream_id, fin, vec.data(), vec.size());
if (sveccnt == -1) {
return -1;