show quic

Display details on active QUIC frontend connections.

Description Jump to heading #

The show quic command displays details on active QUIC frontend connections.

An optional argument can be specified to control the verbosity. Specify either oneline, the default, or full.

By default, connections on closing or draining state are not displayed. To include them in the output, specify the additional argument all.

This command requires a permission level of operator or admin.

This command is available only on the QUIC-enabled load balancer. For details, see HTTP/3.

Examples Jump to heading #

Show active connections in single-line format.

nix
echo "show quic" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

nix
echo "show quic" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

output
text
# conn/frontend            state   in_flight  infl_p  lost_p  from                 to                 local & remote CIDs
0x55640121edd0[00]/ft_web  ESTAB   0          0       0       78.2.87.205:39160    172.31.39.255:443  b254b4d91c508339 
0x7fd2b8052380[01]/ft_web  ESTAB   0          0       0       99.161.85.162:57929  172.31.39.255:443  642481da17fe200c 

output
text
# conn/frontend            state   in_flight  infl_p  lost_p  from                 to                 local & remote CIDs
0x55640121edd0[00]/ft_web  ESTAB   0          0       0       78.2.87.205:39160    172.31.39.255:443  b254b4d91c508339 
0x7fd2b8052380[01]/ft_web  ESTAB   0          0       0       99.161.85.162:57929  172.31.39.255:443  642481da17fe200c 

Show all connections in multi-line format.

nix
echo "show quic full all" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

nix
echo "show quic full all" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

output
text
* 0x7fd2b8054000[01]: scid=aefb0b99275aecd2........................ dcid=........................................
loc. TPs: odcid=12710e64754ea485 iscid=aefb0b99275aecd2
   midle_timeout=30000ms mudp_payload_sz=2048 ack_delay_exp=3 mack_delay=25ms act_cid_limit=8
   md=1687140 msd_bidi_l=16380 msd_bidi_r=16380 msd_uni=16380 ms_bidi=100 ms_uni=3
   (no_act_migr,stless_rst_tok)
rem. TPs: iscid=
   midle_timeout=30000ms mudp_payload_sz=1472 ack_delay_exp=3 mack_delay=25ms act_cid_limit=2
   md=15728640 msd_bidi_l=6291456 msd_bidi_r=6291456 msd_uni=6291456 ms_bidi=100 ms_uni=103
st=opened           mux=ready                                     expire=27s
fd=-1               from=99.161.85.162:57929 to=172.31.39.255:443
[initl]             rx.ackrng=1      tx.inflight=0                [hndshk] rx.ackrng=1      tx.inflight=0
[01rtt]             rx.ackrng=1      tx.inflight=0
srtt=135  rttvar=37   rttmin=129  ptoc=0    cwnd=14153  mcwnd=14153  lostpkts=0
| stream=3        off=0        ack=17

output
text
* 0x7fd2b8054000[01]: scid=aefb0b99275aecd2........................ dcid=........................................
loc. TPs: odcid=12710e64754ea485 iscid=aefb0b99275aecd2
   midle_timeout=30000ms mudp_payload_sz=2048 ack_delay_exp=3 mack_delay=25ms act_cid_limit=8
   md=1687140 msd_bidi_l=16380 msd_bidi_r=16380 msd_uni=16380 ms_bidi=100 ms_uni=3
   (no_act_migr,stless_rst_tok)
rem. TPs: iscid=
   midle_timeout=30000ms mudp_payload_sz=1472 ack_delay_exp=3 mack_delay=25ms act_cid_limit=2
   md=15728640 msd_bidi_l=6291456 msd_bidi_r=6291456 msd_uni=6291456 ms_bidi=100 ms_uni=103
st=opened           mux=ready                                     expire=27s
fd=-1               from=99.161.85.162:57929 to=172.31.39.255:443
[initl]             rx.ackrng=1      tx.inflight=0                [hndshk] rx.ackrng=1      tx.inflight=0
[01rtt]             rx.ackrng=1      tx.inflight=0
srtt=135  rttvar=37   rttmin=129  ptoc=0    cwnd=14153  mcwnd=14153  lostpkts=0
| stream=3        off=0        ack=17

As of version 2.8r1, two additional options are available, full and oneline. The show quic full command will show all information about active QUIC connections and show quic oneline will show the output in a single-line format.

Show active connections in single-line format.

nix
echo "show quic oneline" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

nix
echo "show quic oneline" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

output
text
# conn/frontend                     state   in_flight infl_p lost_p         Local Address           Foreign Address      local & remote CIDs
0x7fd6fc057070[01]/mysite           ESTAB           0      0      0     192.168.56.20:443        192.168.56.1:63001 dcac8f57cf114e79 eb5100

output
text
# conn/frontend                     state   in_flight infl_p lost_p         Local Address           Foreign Address      local & remote CIDs
0x7fd6fc057070[01]/mysite           ESTAB           0      0      0     192.168.56.20:443        192.168.56.1:63001 dcac8f57cf114e79 eb5100

Show all connections in multi-line format.

nix
echo "show quic full all" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

nix
echo "show quic full all" | \
  sudo socat stdio tcp4-connect:127.0.0.1:9999

output
text
0x7fd6fc0557e0[00]: scid=808512a0ce1efa02........................ dcid=25bba7..................................
  loc. TPs: odcid=78388e56de6e49b0 iscid=808512a0ce1efa02
    midle_timeout=30000ms mudp_payload_sz=2048 ack_delay_exp=3 mack_delay=25ms act_cid_limit=8
    md=1687140 msd_bidi_l=16380 msd_bidi_r=16380 msd_uni=16380 ms_bidi=100 ms_uni=3
    (no_act_migr,stless_rst_tok)
  rem. TPs: iscid=25bba7
    midle_timeout=30000ms mudp_payload_sz=65527 ack_delay_exp=3 mack_delay=20ms act_cid_limit=8
    md=25165824 msd_bidi_l=12582912 msd_bidi_r=1048576 msd_uni=1048576 ms_bidi=16 ms_uni=16
    (no_act_migr)
  st=opened           mux=ready                                     expire=28s
  fd=23               local_addr=192.168.56.20:443 foreign_addr=192.168.56.1:58805
  [initl]             rx.ackrng=1      tx.inflight=0                [hndshk] rx.ackrng=1      tx.inflight=0
  [01rtt]             rx.ackrng=1      tx.inflight=0
  srtt=10   rttvar=10   rttmin=5    ptoc=0    cwnd=15065  mcwnd=15065  sentpkts=12     lostpkts=0
  | stream=3        off=0        ack=17

output
text
0x7fd6fc0557e0[00]: scid=808512a0ce1efa02........................ dcid=25bba7..................................
  loc. TPs: odcid=78388e56de6e49b0 iscid=808512a0ce1efa02
    midle_timeout=30000ms mudp_payload_sz=2048 ack_delay_exp=3 mack_delay=25ms act_cid_limit=8
    md=1687140 msd_bidi_l=16380 msd_bidi_r=16380 msd_uni=16380 ms_bidi=100 ms_uni=3
    (no_act_migr,stless_rst_tok)
  rem. TPs: iscid=25bba7
    midle_timeout=30000ms mudp_payload_sz=65527 ack_delay_exp=3 mack_delay=20ms act_cid_limit=8
    md=25165824 msd_bidi_l=12582912 msd_bidi_r=1048576 msd_uni=1048576 ms_bidi=16 ms_uni=16
    (no_act_migr)
  st=opened           mux=ready                                     expire=28s
  fd=23               local_addr=192.168.56.20:443 foreign_addr=192.168.56.1:58805
  [initl]             rx.ackrng=1      tx.inflight=0                [hndshk] rx.ackrng=1      tx.inflight=0
  [01rtt]             rx.ackrng=1      tx.inflight=0
  srtt=10   rttvar=10   rttmin=5    ptoc=0    cwnd=15065  mcwnd=15065  sentpkts=12     lostpkts=0
  | stream=3        off=0        ack=17