Mercurial > hg > nginx
annotate README @ 8494:e334ca1b23ba quic
HTTP/3: support $server_protocol variable.
Now it holds "HTTP/3.0". Previously it was empty.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 14 Jul 2020 16:52:44 +0300 |
parents | 6e84524886d4 |
children | affb0245e291 |
rev | line source |
---|---|
8366 | 1 Experimental QUIC support for nginx |
2 ----------------------------------- | |
3 | |
4 1. Introduction | |
5 2. Installing | |
6 3. Configuration | |
7 4. Clients | |
8 5. Troubleshooting | |
8410
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
9 6. Contributing |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
10 7. Links |
8366 | 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 | |
8412
4ea302a47d28
README: update after merging 1.19.0.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8410
diff
changeset
|
18 on nginx mainline 1.19.x. We are planning to merge new nginx |
8366 | 19 releases into this branch regularly. |
20 | |
21 The project code base is under the same BSD license as nginx. | |
22 | |
23 The code is at an early alpha level of quality and should not | |
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 | |
8449
3c32717d7bb2
README: documented draft-28, draft-29 support.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8412
diff
changeset
|
37 Currently we support IETF-QUIC draft-27, draft-28, draft-29. |
3c32717d7bb2
README: documented draft-28, draft-29 support.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8412
diff
changeset
|
38 Earlier drafts are NOT supported as they have incompatible wire format. |
8366 | 39 |
8410
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
40 You may look at src/event/ngx_event_quic.h for alternative values of the |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
41 NGX_QUIC_DRAFT_VERSION macro used to select IETF draft version number. |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
42 |
8366 | 43 nginx should be able to respond to simple HTTP/3 requests over QUIC and |
44 it should be possible to upload and download big files without errors. | |
45 | |
46 + The handshake completes successfully | |
47 + One endpoint can update keys and its peer responds correctly | |
8390 | 48 + 0-RTT data is being received and acted on |
8366 | 49 + Connection is established using TLS Resume Ticket |
8389
2b580ac17a47
README: Retry support, protocol error messages implemented.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8373
diff
changeset
|
50 + A handshake that includes a Retry packet completes successfully |
8366 | 51 + Stream data is being exchanged and ACK'ed |
52 + An H3 transaction succeeded | |
53 + One or both endpoints insert entries into dynamic table and | |
54 subsequently reference them from header blocks | |
55 | |
56 Not (yet) supported features: | |
57 | |
58 - Version negotiation | |
59 - ECN, Congestion control and friends as specified in quic-recovery [5] | |
60 - A connection with the spin bit succeeds and the bit is spinning | |
61 - Structured Logging | |
62 - QUIC recovery (proper congestion and flow control) | |
63 - NAT Rebinding | |
64 - Address Mobility | |
65 - Server push | |
66 - HTTP/3 trailers | |
67 | |
68 Since the code is experimental and still under development, | |
69 a lot of things may not work as expected, for example: | |
70 | |
71 - ACK handling is basic: every received ack-eliciting packet | |
72 is acknowledged, no ack ranges are used | |
73 | |
74 - Flow control mechanism is basic and intended to avoid CPU hog and make | |
75 simple interactions possible | |
76 | |
77 - Not all draft requirements are strictly followed; some of checks are | |
78 omitted for the sake of simplicity of initial implementation | |
79 | |
80 2. Installing | |
81 | |
82 You will need a BoringSSL [4] library that provides QUIC support | |
83 | |
8373
796b5b6c43cd
Mention quic branch in README.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8372
diff
changeset
|
84 $ hg clone -b quic https://hg.nginx.org/nginx-quic |
8366 | 85 $ cd nginx-quic |
8372
0e6528551f26
Configure: unbreak with old OpenSSL, --with-http_v3_module added.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8366
diff
changeset
|
86 $ ./auto/configure --with-debug --with-http_v3_module \ |
0e6528551f26
Configure: unbreak with old OpenSSL, --with-http_v3_module added.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8366
diff
changeset
|
87 --with-cc-opt="-I../boringssl/include" \ |
0e6528551f26
Configure: unbreak with old OpenSSL, --with-http_v3_module added.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8366
diff
changeset
|
88 --with-ld-opt="-L../boringssl/build/ssl \ |
0e6528551f26
Configure: unbreak with old OpenSSL, --with-http_v3_module added.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8366
diff
changeset
|
89 -L../boringssl/build/crypto" |
8366 | 90 $ make |
91 | |
8487
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
92 When configuring nginx, you can enable QUIC and HTTP/3 using the |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
93 following new configuration options: |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
94 |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
95 --with-http_v3_module - enable QUIC and HTTP/3 |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
96 --with-http_quic_module - enable QUIC for older HTTP versions |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
97 --with-stream_quic_module - enable QUIC in Stream |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
98 |
8366 | 99 3. Configuration |
100 | |
8487
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
101 The HTTP "listen" directive got two new options: "http3" and "quic". |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
102 The "http3" option enables HTTP/3 over QUIC on the specified port. |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
103 The "quic" option enables QUIC for older HTTP versions on this port. |
8366 | 104 |
8487
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
105 The Stream "listen" directive got a new option "quic" which enables |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
106 QUIC as client transport protocol instead of TCP or plain UDP. |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
107 |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
108 Along with "http3" or "quic", you also have to specify "reuseport" |
6e84524886d4
QUIC: updated README to mention "quic" listen parameter.
Roman Arutyunyan <arut@nginx.com>
parents:
8449
diff
changeset
|
109 option [6] to make it work properly with multiple workers. |
8366 | 110 |
111 A number of directives were added that specify transport parameter values: | |
112 | |
113 quic_max_idle_timeout | |
114 quic_max_ack_delay | |
115 quic_max_packet_size | |
116 quic_initial_max_data | |
117 quic_initial_max_stream_data_bidi_local | |
118 quic_initial_max_stream_data_bidi_remote | |
119 quic_initial_max_stream_data_uni | |
120 quic_initial_max_streams_bidi | |
121 quic_initial_max_streams_uni | |
122 quic_ack_delay_exponent | |
123 quic_active_migration | |
124 quic_active_connection_id_limit | |
125 | |
8402
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
126 To enable address validation: |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
127 |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
128 quic_retry on; |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
129 |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
130 To enable 0-RTT: |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
131 |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
132 ssl_early_data on; |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
133 |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
134 Make sure that TLS 1.3 is configured which is required for QUIC: |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
135 |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
136 ssl_protocols TLSv1.3; |
af22b60a905b
README: documented Retry, 0-RTT, TLSv1.3 configuration.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8396
diff
changeset
|
137 |
8366 | 138 Two additional variables are available: $quic and $http3. |
139 The value of $quic is "quic" if QUIC connection is used, | |
140 and empty string otherwise. The value of $http3 is a string | |
141 "h3-xx" where "xx" is the supported draft number. | |
142 | |
143 Example configuration: | |
144 | |
145 http { | |
146 log_format quic '$remote_addr - $remote_user [$time_local] ' | |
147 '"$request" $status $body_bytes_sent ' | |
148 '"$http_referer" "$http_user_agent" "$quic" "$http3"'; | |
149 | |
150 access_log logs/access.log quic; | |
151 | |
152 server { | |
153 # for better compatibility it's recommended | |
154 # to use the same port for quic and https | |
155 listen 8443 http3 reuseport; | |
156 listen 8443 ssl; | |
157 | |
158 ssl_certificate certs/example.com.crt; | |
159 ssl_certificate_key certs/example.com.key; | |
160 ssl_protocols TLSv1.3; | |
161 | |
162 location / { | |
163 # required for browsers to direct them into quic port | |
8396
94c06fe6e159
README: pointed out Alt-Svc "ma" parameter useful with curl.
Sergey Kandaurov <pluknet@nginx.com>
parents:
8395
diff
changeset
|
164 add_header Alt-Svc '$http3=":8443"; ma=86400'; |
8366 | 165 } |
166 } | |
167 } | |
168 | |
169 4. Clients | |
170 | |
171 * Browsers | |
172 | |
173 Known to work: Firefox 75+ and Chrome 83+ | |
174 | |
175 Beware of strange issues: sometimes browser may decide to ignore QUIC | |
176 Cache clearing/restart might help. Always check access.log and | |
177 error.log to make sure you are using HTTP/3 and not TCP https. | |
178 | |
179 + to enable QUIC in Firefox, set the following in 'about:config': | |
180 network.http.http3.enabled = true | |
181 | |
182 + to enable QUIC in Chrome, enable it on command line and force it | |
183 on your site: | |
184 | |
185 $ ./chrome --enable-quic --quic-version=h3-27 \ | |
186 --origin-to-force-quic-on=example.com:8443 | |
187 | |
188 * Console clients | |
189 | |
190 Known to work: ngtcp2, firefox's neqo and chromium's console clients: | |
191 | |
192 $ examples/client 127.0.0.1 8443 https://example.com:8443/index.html | |
193 | |
194 $ ./neqo-client https://127.0.0.1:8443/ | |
195 | |
196 $ chromium-build/out/my_build/quic_client http://example.com:8443 \ | |
197 --quic_version=h3-27 \ | |
198 --allow_unknown_root_cert \ | |
199 --disable_certificate_verification | |
200 | |
201 | |
202 If you've got it right, in the access log you should see something like: | |
203 | |
204 127.0.0.1 - - [24/Apr/2020:11:27:29 +0300] "GET / HTTP/3" 200 805 "-" | |
205 "nghttp3/ngtcp2 client" "quic" "h3-27" | |
206 | |
207 | |
208 5. Troubleshooting | |
209 | |
210 Here are some tips that may help you to identify problems: | |
211 | |
212 + Ensure you are building with proper SSL library that | |
213 implements draft 27 | |
214 | |
215 + Ensure you are using the proper SSL library in runtime | |
216 (`nginx -V` will show you what you are using) | |
217 | |
218 + Ensure your client is actually sending QUIC requests | |
219 (see "Clients" section about browsers and cache) | |
220 | |
221 We recommend to start with simple console client like ngtcp2 | |
222 to ensure you've got server configured properly before trying | |
8395 | 223 with real browsers that may be very picky with certificates, |
8366 | 224 for example. |
225 | |
226 + Build nginx with debug support [7] and check your debug log. | |
227 It should contain all details about connection and why it | |
228 failed. All related messages contain "quic " prefix and can | |
229 be easily filtered out. | |
230 | |
231 + If you want to investigate deeper, you may want to enable | |
232 additional debugging in src/event/ngx_event_quic.h: | |
233 | |
234 #define NGX_QUIC_DEBUG_PACKETS | |
235 #define NGX_QUIC_DEBUG_FRAMES | |
236 #define NGX_QUIC_DEBUG_FRAMES_ALLOC | |
237 #define NGX_QUIC_DEBUG_CRYPTO | |
238 | |
8410
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
239 6. Contributing |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
240 |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
241 If you are willing to contribute, please refer to |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
242 http://nginx.org/en/docs/contributing_changes.html |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
243 |
c7d1b500bd0a
Updated README with "Contributing" section and draft details.
Vladimir Homutov <vl@nginx.com>
parents:
8402
diff
changeset
|
244 7. Links |
8366 | 245 |
246 [1] https://tools.ietf.org/html/draft-ietf-quic-transport-27 | |
247 [2] https://tools.ietf.org/html/draft-ietf-quic-http-27 | |
248 [3] https://mailman.nginx.org/mailman/listinfo/nginx-devel | |
249 [4] https://boringssl.googlesource.com/boringssl/ | |
250 [5] https://tools.ietf.org/html/draft-ietf-quic-recovery-27 | |
251 [6] https://nginx.org/en/docs/http/ngx_http_core_module.html#listen | |
252 [7] https://nginx.org/en/docs/debugging_log.html |