Alawn/shadowsocks-libev
1
0
Fork 0
mirror of https://github.com/shadowsocks/shadowsocks-libev.git synced 2026-10-29 04:03:45 +00:00
Code Releases Activity

Leave pool room for UDP sessions that are still closing

Browse Source 
An evicted session keeps its pool slot until its socket's close callback
runs, so with pool capacity equal to the table's the acquire after an
eviction failed: a full table dropped new-session packets after evicting
a live session for nothing. The AEAD-2022 shared-session pool had the
same problem with entries still referenced by relay sessions.
This commit is contained in:
Max Lv
2026-10-15 00:34:32 +08:00
parent af4e7a02af
commit 4eb6a7415b
1 changed files with 7 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/relay/udp.cpp
+7 -2
View File
@@ -290,11 +290,16 @@ Status UdpRelay::init(event::Loop &loop, Method &method, const UdpConfig &config
config_ = config;
std::uint64_t seed = 0;
randombytes_buf(&seed, sizeof(seed));
SS_TRY(pool_.reserve(config.max_sessions));
// An evicted session keeps its pool slot until its socket's close
// callback runs on a later loop iteration, so the pool needs room for
// a table's worth of closing sessions next to the live ones.
SS_TRY(pool_.reserve(2 * config.max_sessions));
SS_TRY(sessions_.reserve(config.max_sessions, seed));
if (config.kind == Kind::server) {
if (method.psk() != nullptr) {
SS_TRY(shared_pool_.reserve(config.max_sessions_2022));
// An entry evicted from shared_ stays alive while a relay
// session still references it (at most one per session).
SS_TRY(shared_pool_.reserve(config.max_sessions_2022 + config.max_sessions));
SS_TRY(shared_.reserve(config.max_sessions_2022, seed ^ 0x9E3779B97F4A7C15ULL));
}
SS_TRY(pending_.reserve(config.max_pending_dns));