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warmcat.com and libwebsockets.org use Let's Encrypt certificates... LE have changed their CA signing arrangements and after 2021-01-12 (the point I renewed the LE server certs and received one signed using the new arrangements) it's required to trust new root certs for the examples to connect to warmcat.com and libwebsockets.org. https://letsencrypt.org/2020/09/17/new-root-and-intermediates.html This updates the in-tree CA copies, the remote policies on warmcat.com have also been updated. Just goes to show for real client infrastructure, you need to run your own CA (that doesn't have to be trusted by anything outside the clients) where you can control the CA lifetime. |
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|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| minimal-http-client-custom-headers.c | ||
| README.md | ||
| warmcat.com.cer | ||
lws minimal http client custom headers
This http client application shows how to send and receive custom headers.
This currently only works on http 1, so the app forces that even if h2 enables.
build
$ cmake . && make
usage
| Commandline option | Meaning |
|---|---|
| -d | Debug verbosity in decimal, eg, -d15 |
| -l | Connect to https://localhost:7681 and accept selfsigned cert |
| -n | no TLS |
The app looks for a custom header "test-custom-header" sent by warmcat.com.
$ ./lws-minimal-http-client-custom-headers
[2019/03/11 05:46:45:7582] USER: LWS minimal http client Custom Headers [-d<verbosity>] [-l] [--h1]
[2019/03/11 05:46:45:7671] NOTICE: created client ssl context for default
[2019/03/11 05:46:46:7812] USER: Connected with server response: 200
[2019/03/11 05:46:46:7812] NOTICE: callback_http: custom header: 'hello'
[2019/03/11 05:46:46:7814] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
...
You can use the -n and -l to make this test app connect to localhost:7681 over http, and confirm the "dnt:1" header was sent either by tcpdump or by running the test server on :7681 with -d1151
[2019/03/11 05:48:53:6806] PARSER: WSI_TOKEN_NAME_PART 'd' 0x64 (role=0x20000000) wsi->lextable_pos=0
[2019/03/11 05:48:53:6807] PARSER: WSI_TOKEN_NAME_PART 'n' 0x6E (role=0x20000000) wsi->lextable_pos=567
[2019/03/11 05:48:53:6807] PARSER: WSI_TOKEN_NAME_PART 't' 0x74 (role=0x20000000) wsi->lextable_pos=-1
[2019/03/11 05:48:53:6807] PARSER: WSI_TOKEN_NAME_PART ' ' 0x20 (role=0x20000000) wsi->lextable_pos=-1
[2019/03/11 05:48:53:6807] PARSER: WSI_TOKEN_NAME_PART '1' 0x31 (role=0x20000000) wsi->lextable_pos=-1
' 0x0D (role=0x20000000) wsi->lextable_pos=-1NAME_PART '
[2019/03/11 05:48:53:6807] PARSER: WSI_TOKEN_NAME_PART '