Mercurial > hg > nginx-quic
annotate README @ 8848:dde5cb0205ef quic
QUIC: fixed the "quic_stream_buffer_size" directive.
The default value is now correctly set and the configuration
is properly merged.
author | Vladimir Homutov <vl@nginx.com> |
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date | Tue, 08 Feb 2022 23:00:12 +0300 |
parents | a7b789e2be27 |
children | 0e74a77c2475 |
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7843 | 1 Experimental QUIC support for nginx |
2 ----------------------------------- | |
3 | |
4 1. Introduction | |
5 2. Installing | |
6 3. Configuration | |
7 4. Clients | |
8 5. Troubleshooting | |
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9 6. Contributing |
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10 7. Links |
7843 | 11 |
12 1. Introduction | |
13 | |
14 This is an experimental QUIC [1] / HTTP/3 [2] support for nginx. | |
15 | |
16 The code is developed in a separate "quic" branch available | |
17 at https://hg.nginx.org/nginx-quic. Currently it is based | |
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18 on nginx mainline 1.21.x. We merge new nginx releases into |
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19 this branch regularly. |
7843 | 20 |
21 The project code base is under the same BSD license as nginx. | |
22 | |
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23 The code is currently at a beta level of quality and should not |
7843 | 24 be used in production. |
25 | |
26 We are working on improving HTTP/3 support with the goal of | |
27 integrating it to the main NGINX codebase. Expect frequent | |
28 updates of this code and don't rely on it for whatever purpose. | |
29 | |
30 We'll be grateful for any feedback and code submissions however | |
31 we don't bear any responsibilities for any issues with this code. | |
32 | |
33 You can always contact us via nginx-devel mailing list [3]. | |
34 | |
35 What works now: | |
36 | |
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37 We support IETF QUIC version 1. Internet drafts are no longer supported. |
7843 | 38 |
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39 nginx should be able to respond to HTTP/3 requests over QUIC and |
7843 | 40 it should be possible to upload and download big files without errors. |
41 | |
42 + The handshake completes successfully | |
43 + One endpoint can update keys and its peer responds correctly | |
7867 | 44 + 0-RTT data is being received and acted on |
7843 | 45 + Connection is established using TLS Resume Ticket |
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46 + A handshake that includes a Retry packet completes successfully |
7843 | 47 + Stream data is being exchanged and ACK'ed |
48 + An H3 transaction succeeded | |
49 + One or both endpoints insert entries into dynamic table and | |
50 subsequently reference them from header blocks | |
8065 | 51 + Version Negotiation packet is sent to client with unknown version |
52 + Lost packets are detected and retransmitted properly | |
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53 + Clients may migrate to new address |
7843 | 54 |
55 2. Installing | |
56 | |
57 You will need a BoringSSL [4] library that provides QUIC support | |
58 | |
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59 $ hg clone -b quic https://hg.nginx.org/nginx-quic |
7843 | 60 $ cd nginx-quic |
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61 $ ./auto/configure --with-debug --with-http_v3_module \ |
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62 --with-cc-opt="-I../boringssl/include" \ |
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63 --with-ld-opt="-L../boringssl/build/ssl \ |
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64 -L../boringssl/build/crypto" |
7843 | 65 $ make |
66 | |
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67 Alternatively, nginx can be configured with QuicTLS [9] |
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68 |
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69 $ ./auto/configure --with-debug --with-http_v3_module \ |
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70 --with-cc-opt="-I../quictls/build/include" \ |
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71 --with-ld-opt="-L../quictls/build/lib" |
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72 |
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73 When configuring nginx, you can enable QUIC and HTTP/3 using the |
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74 following new configuration options: |
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75 |
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76 --with-http_v3_module - enable QUIC and HTTP/3 |
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77 --with-stream_quic_module - enable QUIC in Stream |
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78 |
7843 | 79 3. Configuration |
80 | |
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81 The HTTP "listen" directive got a new option "http3" which enables |
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82 HTTP/3 over QUIC on the specified port. |
7843 | 83 |
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84 The Stream "listen" directive got a new option "quic" which enables |
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85 QUIC as client transport protocol instead of TCP or plain UDP. |
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86 |
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87 Along with "http3" or "quic", you also have to specify "reuseport" |
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88 option [6] to make it work properly with multiple workers. |
7843 | 89 |
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90 To enable address validation: |
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91 |
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92 quic_retry on; |
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93 |
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94 To enable 0-RTT: |
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95 |
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96 ssl_early_data on; |
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97 |
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98 Make sure that TLS 1.3 is configured which is required for QUIC: |
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99 |
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100 ssl_protocols TLSv1.3; |
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101 |
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102 To enable GSO (Generic Segmentation Offloading): |
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103 |
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104 quic_gso on; |
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105 |
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106 To limit maximum packet size: |
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107 |
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108 quic_mtu <size>; |
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109 |
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110 To set host key for various tokens: |
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111 |
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112 quic_host_key <filename>; |
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113 |
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114 |
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115 By default this Linux-specific optimization [8] is disabled. |
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116 Enable if your network interface is configured to support GSO. |
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117 |
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118 A number of directives were added that configure HTTP/3: |
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119 |
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120 http3_stream_buffer_size |
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121 http3_max_concurrent_pushes |
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122 http3_max_concurrent_streams |
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123 http3_push |
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124 http3_push_preload |
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125 http3_hq (requires NGX_HTTP_V3_HQ macro) |
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126 |
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127 In http, an additional variable is available: $http3. |
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128 The value of $http3 is "h3" for HTTP/3 connections, |
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129 "hq" for hq connections, or an empty string otherwise. |
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130 |
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131 In stream, an additional variable is available: $quic. |
7843 | 132 The value of $quic is "quic" if QUIC connection is used, |
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133 or an empty string otherwise. |
7843 | 134 |
135 Example configuration: | |
136 | |
137 http { | |
138 log_format quic '$remote_addr - $remote_user [$time_local] ' | |
139 '"$request" $status $body_bytes_sent ' | |
8718 | 140 '"$http_referer" "$http_user_agent" "$http3"'; |
7843 | 141 |
142 access_log logs/access.log quic; | |
143 | |
144 server { | |
145 # for better compatibility it's recommended | |
146 # to use the same port for quic and https | |
147 listen 8443 http3 reuseport; | |
148 listen 8443 ssl; | |
149 | |
150 ssl_certificate certs/example.com.crt; | |
151 ssl_certificate_key certs/example.com.key; | |
152 ssl_protocols TLSv1.3; | |
153 | |
154 location / { | |
155 # required for browsers to direct them into quic port | |
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156 add_header Alt-Svc 'h3=":8443"; ma=86400'; |
7843 | 157 } |
158 } | |
159 } | |
160 | |
161 4. Clients | |
162 | |
163 * Browsers | |
164 | |
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165 Known to work: Firefox 90+ and Chrome 92+ (QUIC version 1) |
7843 | 166 |
167 Beware of strange issues: sometimes browser may decide to ignore QUIC | |
168 Cache clearing/restart might help. Always check access.log and | |
169 error.log to make sure you are using HTTP/3 and not TCP https. | |
170 | |
171 * Console clients | |
172 | |
173 Known to work: ngtcp2, firefox's neqo and chromium's console clients: | |
174 | |
175 $ examples/client 127.0.0.1 8443 https://example.com:8443/index.html | |
176 | |
177 $ ./neqo-client https://127.0.0.1:8443/ | |
178 | |
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179 $ chromium-build/out/my_build/quic_client http://example.com:8443 |
7843 | 180 |
181 | |
182 If you've got it right, in the access log you should see something like: | |
183 | |
184 127.0.0.1 - - [24/Apr/2020:11:27:29 +0300] "GET / HTTP/3" 200 805 "-" | |
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185 "nghttp3/ngtcp2 client" "quic" |
7843 | 186 |
187 | |
188 5. Troubleshooting | |
189 | |
190 Here are some tips that may help you to identify problems: | |
191 | |
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192 + Ensure you are building with proper SSL library that supports QUIC |
7843 | 193 |
194 + Ensure you are using the proper SSL library in runtime | |
195 (`nginx -V` will show you what you are using) | |
196 | |
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197 + Ensure your client is actually sending requests over QUIC |
7843 | 198 (see "Clients" section about browsers and cache) |
199 | |
200 We recommend to start with simple console client like ngtcp2 | |
201 to ensure you've got server configured properly before trying | |
7872 | 202 with real browsers that may be very picky with certificates, |
7843 | 203 for example. |
204 | |
205 + Build nginx with debug support [7] and check your debug log. | |
206 It should contain all details about connection and why it | |
207 failed. All related messages contain "quic " prefix and can | |
208 be easily filtered out. | |
209 | |
210 + If you want to investigate deeper, you may want to enable | |
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211 additional debugging in src/event/quic/ngx_event_quic_connection.h: |
7843 | 212 |
213 #define NGX_QUIC_DEBUG_PACKETS | |
214 #define NGX_QUIC_DEBUG_FRAMES | |
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215 #define NGX_QUIC_DEBUG_ALLOC |
7843 | 216 #define NGX_QUIC_DEBUG_CRYPTO |
217 | |
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218 6. Contributing |
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219 |
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220 If you are willing to contribute, please refer to |
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221 http://nginx.org/en/docs/contributing_changes.html |
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222 |
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223 7. Links |
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225 [1] https://datatracker.ietf.org/doc/html/rfc9000 |
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226 [2] https://datatracker.ietf.org/doc/html/draft-ietf-quic-http |
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227 [3] https://mailman.nginx.org/mailman3/lists/nginx-devel.nginx.org/ |
7843 | 228 [4] https://boringssl.googlesource.com/boringssl/ |
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229 [5] https://datatracker.ietf.org/doc/html/rfc9002 |
7843 | 230 [6] https://nginx.org/en/docs/http/ngx_http_core_module.html#listen |
231 [7] https://nginx.org/en/docs/debugging_log.html | |
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232 [8] http://vger.kernel.org/lpc_net2018_talks/willemdebruijn-lpc2018-udpgso-paper-DRAFT-1.pdf |
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233 [9] https://github.com/quictls/openssl |