Mercurial > hg > nginx-quic
annotate auto/summary @ 9067:f68fdb017141 quic
QUIC: optimized sending stream response.
When a stream is created by client, it's often the case that nginx will send
immediate response on that stream. An example is HTTP/3 request stream, which
in most cases quickly replies with at least HTTP headers.
QUIC stream init handlers are called from a posted event. Output QUIC
frames are also sent to client from a posted event, called the push event.
If the push event is posted before the stream init event, then output produced
by stream may trigger sending an extra UDP datagram. To address this, push
event is now re-posted when a new stream init event is posted.
An example is handling 0-RTT packets. Client typically sends an init packet
coalesced with a 0-RTT packet. Previously, nginx replied with a padded CRYPTO
datagram, followed by a 1-RTT stream reply datagram. Now CRYPTO and STREAM
packets are coalesced in one reply datagram, which saves bandwidth.
Other examples include coalescing 1-RTT first stream response, and
MAX_STREAMS/STREAM sent in response to ACK/STREAM.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Mon, 03 Apr 2023 16:17:12 +0400 |
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1 |
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2 # Copyright (C) Igor Sysoev |
4412 | 3 # Copyright (C) Nginx, Inc. |
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6 echo |
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7 echo "Configuration summary" |
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9 |
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10 if [ $USE_THREADS = YES ]; then |
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11 echo " + using threads" |
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12 fi |
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14 if [ $USE_PCRE = DISABLED ]; then |
501 | 15 echo " + PCRE library is disabled" |
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17 else |
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18 case $PCRE in |
8772 | 19 YES) echo " + using system $PCRE_LIBRARY library" ;; |
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20 NONE) echo " + PCRE library is not used" ;; |
8772 | 21 *) echo " + using $PCRE_LIBRARY library: $PCRE" ;; |
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22 esac |
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23 fi |
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25 case $OPENSSL in |
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26 YES) echo " + using system OpenSSL library" ;; |
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27 NONE) echo " + OpenSSL library is not used" ;; |
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28 *) echo " + using OpenSSL library: $OPENSSL" ;; |
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29 esac |
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31 case $ZLIB in |
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32 YES) echo " + using system zlib library" ;; |
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33 NONE) echo " + zlib library is not used" ;; |
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34 *) echo " + using zlib library: $ZLIB" ;; |
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35 esac |
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37 case $NGX_LIBATOMIC in |
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38 YES) echo " + using system libatomic_ops library" ;; |
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39 NO) ;; # not used |
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40 *) echo " + using libatomic_ops library: $NGX_LIBATOMIC" ;; |
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41 esac |
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43 echo |
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45 |
479 | 46 cat << END |
493 | 47 nginx path prefix: "$NGX_PREFIX" |
48 nginx binary file: "$NGX_SBIN_PATH" | |
6383 | 49 nginx modules path: "$NGX_MODULES_PATH" |
1352 | 50 nginx configuration prefix: "$NGX_CONF_PREFIX" |
493 | 51 nginx configuration file: "$NGX_CONF_PATH" |
52 nginx pid file: "$NGX_PID_PATH" | |
479 | 53 END |
54 | |
469 | 55 if test -n "$NGX_ERROR_LOG_PATH"; then |
493 | 56 echo " nginx error log file: \"$NGX_ERROR_LOG_PATH\"" |
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57 else |
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58 echo " nginx logs errors to stderr" |
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59 fi |
479 | 60 |
61 cat << END | |
493 | 62 nginx http access log file: "$NGX_HTTP_LOG_PATH" |
63 nginx http client request body temporary files: "$NGX_HTTP_CLIENT_TEMP_PATH" | |
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64 END |
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65 |
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66 if [ $HTTP_PROXY = YES ]; then |
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67 echo " nginx http proxy temporary files: \"$NGX_HTTP_PROXY_TEMP_PATH\"" |
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68 fi |
479 | 69 |
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70 if [ $HTTP_FASTCGI = YES ]; then |
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71 echo " nginx http fastcgi temporary files: \"$NGX_HTTP_FASTCGI_TEMP_PATH\"" |
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72 fi |
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73 |
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74 if [ $HTTP_UWSGI = YES ]; then |
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75 echo " nginx http uwsgi temporary files: \"$NGX_HTTP_UWSGI_TEMP_PATH\"" |
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76 fi |
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77 |
3637 | 78 if [ $HTTP_SCGI = YES ]; then |
79 echo " nginx http scgi temporary files: \"$NGX_HTTP_SCGI_TEMP_PATH\"" | |
80 fi | |
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82 echo "$NGX_POST_CONF_MSG" |