mirror of
https://github.com/coturn/coturn.git
synced 2026-05-12 09:40:35 +00:00
Pavel Punsky
3294c714aa
## Summary This change lets the listener batch incoming UDP datagrams when `--udp-recvmmsg` is enabled, reducing per-packet overhead on busy listeners while preserving the existing behavior as the default and fallback path. ## What changed - add a new `--udp-recvmmsg` runtime flag - implement a batched UDP receive path in the DTLS listener using `recvmmsg()` - reuse packet classification and datagram processing logic across batched and non-batched receive paths - reduce buffer/metadata churn by reusing listener-side scratch state and network buffers - keep compatibility safeguards by falling back when `recvmmsg()` is unavailable or unsupported - expose the setting in admin/CLI configuration output - update the example test runner to enable the flag on Linux ## Why The current listener processes UDP datagrams one at a time. On Linux, `recvmmsg()` allows the server to receive multiple packets per syscall, which should improve throughput and lower CPU overhead under load for UDP-heavy traffic. ## Notes - the feature is opt-in and defaults to disabled - the implementation is Linux-specific and leaves the existing path unchanged on other platforms - the listener still falls back to the legacy receive path if batched receive is unavailable at runtime ## Testing - updated `examples/run_tests.sh` to pass `--udp-recvmmsg` on Linux - validated behavior through the existing listener flow and fallback handling
66 lines
1.8 KiB
Bash
Executable File
66 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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cleanup() {
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kill "$turnserver_pid" "$peer_pid" 2>/dev/null
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}
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trap cleanup EXIT
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# Detect cmake build and adjust path
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BINDIR="../bin"
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if [ ! -f $BINDIR/turnserver ]; then
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BINDIR="../build/bin"
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fi
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TURNSERVER_EXTRA_ARGS=""
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if [ "$(uname -s)" = "Linux" ]; then
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TURNSERVER_EXTRA_ARGS="--udp-recvmmsg"
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echo 'Using TURNSERVER_EXTRA_ARGS="--udp-recvmmsg"'
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fi
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echo 'Running turnserver'
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$BINDIR/turnserver --use-auth-secret --sock-buf-size=1048576 --static-auth-secret=secret --realm=north.gov --allow-loopback-peers $TURNSERVER_EXTRA_ARGS --cert ../examples/ca/turn_server_cert.pem --pkey ../examples/ca/turn_server_pkey.pem > /dev/null &
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turnserver_pid="$!"
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echo 'Running peer client'
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$BINDIR/turnutils_peer -L 127.0.0.1 -L ::1 -L 0.0.0.0 > /dev/null &
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peer_pid="$!"
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sleep 2
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echo 'Running turn client TCP'
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$BINDIR/turnutils_uclient -t -e 127.0.0.1 -X -g -u user -W secret 127.0.0.1 | grep "start_mclient: tot_send_bytes ~ 1000, tot_recv_bytes ~ 1000" > /dev/null
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if [ $? -eq 0 ]; then
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echo OK
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else
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echo FAIL
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exit $?
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fi
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echo 'Running turn client TLS'
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$BINDIR/turnutils_uclient -t -S -e 127.0.0.1 -X -g -u user -W secret 127.0.0.1 | grep "start_mclient: tot_send_bytes ~ 1000, tot_recv_bytes ~ 1000" > /dev/null
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if [ $? -eq 0 ]; then
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echo OK
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else
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echo FAIL
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exit $?
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fi
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echo 'Running turn client UDP'
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$BINDIR/turnutils_uclient -e 127.0.0.1 -X -g -u user -W secret 127.0.0.1 | grep "start_mclient: tot_send_bytes ~ 1000, tot_recv_bytes ~ 1000" > /dev/null
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if [ $? -eq 0 ]; then
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echo OK
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else
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echo FAIL
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exit $?
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fi
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echo 'Running turn client DTLS'
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$BINDIR/turnutils_uclient -S -e 127.0.0.1 -X -g -u user -W secret 127.0.0.1 | grep "start_mclient: tot_send_bytes ~ 1000, tot_recv_bytes ~ 1000" > /dev/null
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if [ $? -eq 0 ]; then
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echo OK
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else
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echo FAIL
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exit $?
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fi
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sleep 2
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