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59 lines
2.1 KiB
59 lines
2.1 KiB
7 months ago
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# lws minimal http server eventlib foreign
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Commandline option|Meaning
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---|---
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-d <loglevel>|Debug verbosity in decimal, eg, -d15
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--uv|Use the libuv event library (lws must have been configured with `-DLWS_WITH_LIBUV=1`)
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--event|Use the libevent library (lws must have been configured with `-DLWS_WITH_LIBEVENT=1`)
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--ev|Use the libev event library (lws must have been configured with `-DLWS_WITH_LIBEV=1`)
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Notice libevent and libev cannot coexist in the one library. But all the other combinations are OK.
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x|libuv|libevent|libev
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---|---|---|---
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libuv|-|OK|OK
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libevent|OK|-|no
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libev|OK|no|-
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This demonstrates having lws take part in a libuv loop owned by
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something else, with its own objects running in the loop.
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Lws can join the loop, and clean up perfectly after itself without
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leaving anything behind or making trouble in the larger loop, which
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does not need to stop during lws creation or destruction.
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First the foreign loop is created with a 1s timer, and runs alone for 5s.
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Then the lws context is created inside the timer callback and runs for 10s...
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during this period you can visit http://localhost:7681 for normal lws
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service using the foreign loop.
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After the 10s are up, the lws context is destroyed inside the foreign loop
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timer. The foreign loop runs alone again for a further 5s and then
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exits itself.
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## build
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```
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$ cmake . && make
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```
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## usage
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```
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$ ./lws-minimal-http-server-eventlib-foreign
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[2018/03/29 12:19:31:3480] USER: LWS minimal http server eventlib + foreign loop | visit http://localhost:7681
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[2018/03/29 12:19:31:3724] NOTICE: Creating Vhost 'default' port 7681, 1 protocols, IPv6 off
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[2018/03/29 12:19:31:3804] NOTICE: Using foreign event loop...
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[2018/03/29 12:19:31:3938] USER: Foreign 1Hz timer
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[2018/03/29 12:19:32:4011] USER: Foreign 1Hz timer
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[2018/03/29 12:19:33:4024] USER: Foreign 1Hz timer
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^C[2018/03/29 12:19:33:8868] NOTICE: Signal 2 caught, exiting...
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[2018/03/29 12:19:33:8963] USER: main: starting exit cleanup...
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[2018/03/29 12:19:33:9064] USER: main: lws context destroyed: cleaning the foreign loop
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[2018/03/29 12:19:33:9108] USER: main: exiting...
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```
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Visit http://localhost:7681
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