Mirrors/libwebsockets
1
0
Fork 0
mirror of https://github.com/warmcat/libwebsockets.git synced 2025-03-16 00:00:07 +01:00
Code Issues Releases Wiki Activity
libwebsockets/minimal-examples/http-client/minimal-http-client
History
Andy Green 9cb4f25476 h2: LCCSCF_H2_MANUAL_RXFLOW and refactor txcr 
This changes the approach of tx credit management to set the
initial stream tx credit window to zero.  This is the only way
with RFC7540 to gain the ability to selectively precisely rx
flow control incoming streams.

At the time the headers are sent, a WINDOW_UPDATE is sent with
the initial tx credit towards us for that specific stream.  By
default, this acts as before with a 256KB window added for both
the stream and the nwsi, and additional window management sent
as stuff is received.

It's now also possible to set a member in the client info
struct and a new option LCCSCF_H2_MANUAL_RXFLOW to precisely
manage both the initial tx credit for a specific stream and
the ongoing rate limit by meting out further tx credit
manually.

Add another minimal example http-client-h2-rxflow demonstrating how
to force a connection's peer's initial budget to transmit to us
and control it during the connection lifetime to restrict the amount
of incoming data we have to buffer.
2020-01-02 08:31:02 +00:00
..
CMakeLists.txt clean: internally use LWS_WITH_CLIENT and _SERVER 2019-08-26 09:58:57 +01:00
minimal-http-client.c h2: LCCSCF_H2_MANUAL_RXFLOW and refactor txcr 2020-01-02 08:31:02 +00:00
README.md http client basic auth add helper and example 2019-12-22 18:17:45 +00:00
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
--nossl disable ssl connection
--user Set Basic Auth username
--password Set Basic Auth password 
 $ ./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

You can also test the client Basic Auth support against the http-server/minimal-http-server-basicauth example. In one console window run the server and in the other

$ lws-minimal-http-client -l --nossl --path /secret/index.html --user user --password password

The Basic Auth credentials for the test server are literally username "user" and password "password".