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libwebsockets/minimal-examples/http-client/minimal-http-client
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Andy Green bce1f01370 lws_state and system state 
Introduce a generic lws_state object with notification handlers
that may be registered in a chain.

Implement one of those in the context to manage the "system state".

Allow other pieces of lws and user code to register notification
handlers on a context list.  Handlers can object to or take over
responsibility to move forward and retry system state changes if
they know that some dependent action must succeed first.

For example if the system time is invalid, we cannot move on to
a state where anything can do tls until that has been corrected.
2019-09-22 09:35:07 -07:00
..
CMakeLists.txt clean: internally use LWS_WITH_CLIENT and _SERVER 2019-08-26 09:58:57 +01:00
minimal-http-client.c lws_state and system state 2019-09-22 09:35:07 -07:00
README.md lws_validity: unified connection validity tracking 2019-09-22 09:35:07 -07:00
selftest.sh selftests 2018-04-19 16:16:48 +08:00
warmcat.com.cer tls certs: update warmcat.com and libwebsockets.org public certs 2019-09-22 03:08:36 -07:00

README.md

lws minimal http client

The application goes to either https://warmcat.com or https://localhost:7681 (with -l option) and receives the page data.

build

 $ cmake . && make

usage

Commandline option Meaning
-d Debug verbosity in decimal, eg, -d15
-l Connect to https://localhost:7681 and accept selfsigned cert
--h1 Specify http/1.1 only using ALPN, rejects h2 even if server supports it
--server set server name to connect to
-k Apply tls option LCCSCF_ALLOW_INSECURE
-j Apply tls option LCCSCF_ALLOW_SELFSIGNED
-m Apply tls option LCCSCF_SKIP_SERVER_CERT_HOSTNAME_CHECK
-e Apply tls option LCCSCF_ALLOW_EXPIRED
-v Connection validity use 3s / 10s instead of default 5m / 5m10s 
 $ ./lws-minimal-http-client
[2018/03/04 14:43:20:8562] USER: LWS minimal http client
[2018/03/04 14:43:20:8571] NOTICE: Creating Vhost 'default' port -1, 1 protocols, IPv6 on
[2018/03/04 14:43:20:8616] NOTICE: created client ssl context for default
[2018/03/04 14:43:20:8617] NOTICE: lws_client_connect_2: 0x1814dc0: address warmcat.com
[2018/03/04 14:43:21:1496] NOTICE: lws_client_connect_2: 0x1814dc0: address warmcat.com
[2018/03/04 14:43:22:0154] NOTICE: lws_client_interpret_server_handshake: incoming content length 26520
[2018/03/04 14:43:22:0154] NOTICE: lws_client_interpret_server_handshake: client connection up
[2018/03/04 14:43:22:0169] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0169] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0169] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0169] USER: RECEIVE_CLIENT_HTTP_READ: read 1015
[2018/03/04 14:43:22:0174] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0174] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0174] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0174] USER: RECEIVE_CLIENT_HTTP_READ: read 1015
[2018/03/04 14:43:22:0179] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0179] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0179] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:0179] USER: RECEIVE_CLIENT_HTTP_READ: read 1015
[2018/03/04 14:43:22:3010] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3010] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3010] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3010] USER: RECEIVE_CLIENT_HTTP_READ: read 1015
[2018/03/04 14:43:22:3015] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3015] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3015] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3015] USER: RECEIVE_CLIENT_HTTP_READ: read 1015
[2018/03/04 14:43:22:3020] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3020] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3020] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3020] USER: RECEIVE_CLIENT_HTTP_READ: read 1015
[2018/03/04 14:43:22:3022] USER: RECEIVE_CLIENT_HTTP_READ: read 1024
[2018/03/04 14:43:22:3022] USER: RECEIVE_CLIENT_HTTP_READ: read 974
[2018/03/04 14:43:22:3022] NOTICE: lws_http_client_read: transaction completed says -1
[2018/03/04 14:43:23:3042] USER: Completed