![]() wsi timeout, wsi hrtimer, sequencer timeout and vh-protocol timer all now participate on a single sorted us list. The whole idea of polling wakes is thrown out, poll waits ignore the timeout field and always use infinite timeouts. Introduce a public api that can schedule its own callback from the event loop with us resolution (usually ms is all the platform can do). Upgrade timeouts and sequencer timeouts to also be able to use us resolution. Introduce a prepared fakewsi in the pt, so we don't have to allocate one on the heap when we need it. Directly handle vh-protocol timer if LWS_MAX_SMP == 1 |
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.. | ||
CMakeLists.txt | ||
minimal-raw-adopt-tcp.c | ||
README.md |
lws minimal ws server raw adopt tcp
This example is only meaningful if you are integrating lws in another app which generates its own connected sockets. In some cases you may want lws to "adopt" the socket.
(If you simply want a connected client raw socket using lws alone, you can just use lws_client_connect_via_info() with info.method = "RAW". http-client/minimal-http-client shows how to do that, just set info.method to "RAW".)
This example demonstrates how to adopt a foreign, connected socket into lws as a raw wsi, bound to a specific lws protocol.
The example connects a socket itself to libwebsockets.org:80, and then has lws adopt it as a raw wsi. The lws protocol writes "GET / HTTP/1.1" to the socket and hexdumps what was sent back.
The socket won't close until the server side times it out, since it's a raw socket that doesn't understand it's looking at http.
build
$ cmake . && make
usage
$ ./lws-minimal-raw-adopt-tcp
[2018/03/23 09:03:57:1960] USER: LWS minimal raw adopt tcp
[2018/03/23 09:03:57:1961] NOTICE: Creating Vhost 'default' port 7681, 1 protocols, IPv6 off
[2018/03/23 09:03:57:2079] USER: Starting connect...
[2018/03/23 09:03:57:4963] USER: Connected...
[2018/03/23 09:03:57:4963] USER: LWS_CALLBACK_RAW_ADOPT
[2018/03/23 09:03:57:7842] USER: LWS_CALLBACK_RAW_RX (186)
[2018/03/23 09:03:57:7842] NOTICE:
[2018/03/23 09:03:57:7842] NOTICE: 0000: 48 54 54 50 2F 31 2E 31 20 33 30 31 20 52 65 64 HTTP/1.1 301 Red
[2018/03/23 09:03:57:7842] NOTICE: 0010: 69 72 65 63 74 0D 0A 73 65 72 76 65 72 3A 20 6C irect..server: l
[2018/03/23 09:03:57:7842] NOTICE: 0020: 77 73 77 73 0D 0A 53 74 72 69 63 74 2D 54 72 61 wsws..Strict-Tra
[2018/03/23 09:03:57:7843] NOTICE: 0030: 6E 73 70 6F 72 74 2D 53 65 63 75 72 69 74 79 3A nsport-Security:
[2018/03/23 09:03:57:7843] NOTICE: 0040: 20 6D 61 78 2D 61 67 65 3D 31 35 37 36 38 30 30 max-age=1576800
[2018/03/23 09:03:57:7843] NOTICE: 0050: 30 20 3B 20 69 6E 63 6C 75 64 65 53 75 62 44 6F 0 ; includeSubDo
[2018/03/23 09:03:57:7843] NOTICE: 0060: 6D 61 69 6E 73 0D 0A 6C 6F 63 61 74 69 6F 6E 3A mains..location:
[2018/03/23 09:03:57:7843] NOTICE: 0070: 20 68 74 74 70 73 3A 2F 2F 6C 69 62 77 65 62 73 https://libwebs
[2018/03/23 09:03:57:7843] NOTICE: 0080: 6F 63 6B 65 74 73 2E 6F 72 67 0D 0A 63 6F 6E 74 ockets.org..cont
[2018/03/23 09:03:57:7843] NOTICE: 0090: 65 6E 74 2D 74 79 70 65 3A 20 74 65 78 74 2F 68 ent-type: text/h
[2018/03/23 09:03:57:7843] NOTICE: 00A0: 74 6D 6C 0D 0A 63 6F 6E 74 65 6E 74 2D 6C 65 6E tml..content-len
[2018/03/23 09:03:57:7843] NOTICE: 00B0: 67 74 68 3A 20 30 0D 0A 0D 0A gth: 0....
[2018/03/23 09:03:57:7843] NOTICE:
[2018/03/23 09:04:03:3627] USER: LWS_CALLBACK_RAW_CLOSE
Note the example does everything itself, after 5s idle the remote server closes the connection after which the example continues until you ^C it.