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libwebsockets/minimal-examples/secure-streams/minimal-secure-streams-staticpolicy
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Andy Green 101b474217 ss: rx metadata 
At the moment you can define and set per-stream metadata at the client,
which will be string-substituted and if configured in the policy, set in
related outgoing protocol specific content like h1 headers.

This patch extends the metadata concept to also check incoming protocol-
specific content like h1 headers and where it matches the binding in the
streamtype's metadata entry, make it available to the client by name, via
a new lws_ss_get_metadata() api.

Currently warmcat.com has additional headers for

server: lwsws                (well-known header name)
test-custom-header: hello    (custom header name)

minimal-secure-streams test is updated to try to recover these both
in direct and -client (via proxy) versions.  The corresponding metadata
part of the "mintest" stream policy from warmcat.com is

                        {
                                "srv": "server:"
                        }, {
                                "test": "test-custom-header:"
                        },

If built direct, or at the proxy, the stream has access to the static
policy metadata definitions and can store the rx metadata in the stream
metadata allocation, with heap-allocated a value.  For client side that
talks to a proxy, only the proxy knows the policy, and it returns rx
metadata inside the serialized link to the client, which stores it on
the heap attached to the stream.

In addition an optimization for mapping static policy metadata definitions
to individual stream handle metadata is changed to match by name.
2020-09-16 13:10:26 +01:00
..
CMakeLists.txt cmake: provide LIBWEBSOCKETS_DEP_LIBS in CONFIG 2020-06-16 19:45:35 +01:00
minimal-secure-streams.c ss: rx metadata 2020-09-16 13:10:26 +01:00
README.md ss: add static policy as a build option 2020-03-26 06:48:34 +00:00
static-policy.h ss: static policy: dynamic vhost instantiation 2020-07-21 12:43:32 +01:00
static-policy.json ss: static policy: dynamic vhost instantiation 2020-07-21 12:43:32 +01:00

README.md

lws minimal secure streams static policy

The application goes to https://warmcat.com and reads index.html there.

It does it using a static Secure Streams policy generated from JSON by policy2c example.

build

 $ cmake . && make

usage

Commandline option Meaning
-d Debug verbosity in decimal, eg, -d15 
$ ./lws-minimal-secure-streams-staticpolicy
[2020/03/26 15:49:12:6640] U: LWS secure streams static policy test client [-d<verb>]
[2020/03/26 15:49:12:7067] N: lws_create_context: using ss proxy bind '(null)', port 0, ads '(null)'
[2020/03/26 15:49:12:7567] N: lws_tls_client_create_vhost_context: using mem client CA cert 914
[2020/03/26 15:49:12:7597] N: lws_tls_client_create_vhost_context: using mem client CA cert 1011
[2020/03/26 15:49:12:7603] N: lws_tls_client_create_vhost_context: using mem client CA cert 1425
[2020/03/26 15:49:12:7605] N: lws_tls_client_create_vhost_context: using mem client CA cert 1011
[2020/03/26 15:49:12:9713] N: lws_system_cpd_set: setting CPD result OK
[2020/03/26 15:49:13:9625] N: ss_api_amazon_auth_rx: acquired 588-byte api.amazon.com auth token, exp 3600s
[2020/03/26 15:49:13:9747] U: myss_state: LWSSSCS_CREATING, ord 0x0
[2020/03/26 15:49:13:9774] U: myss_state: LWSSSCS_CONNECTING, ord 0x0
[2020/03/26 15:49:14:1897] U: myss_state: LWSSSCS_CONNECTED, ord 0x0
[2020/03/26 15:49:14:1926] U: myss_rx: len 1520, flags: 1
[2020/03/26 15:49:14:1945] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:1946] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:1947] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:1948] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:1949] U: myss_rx: len 583, flags: 0
[2020/03/26 15:49:14:2087] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2089] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2090] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2091] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2092] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2093] U: myss_rx: len 583, flags: 0
[2020/03/26 15:49:14:2109] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2110] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2111] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2112] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2113] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2114] U: myss_rx: len 583, flags: 0
[2020/03/26 15:49:14:2135] U: myss_rx: len 1520, flags: 0
[2020/03/26 15:49:14:2136] U: myss_rx: len 1358, flags: 0
[2020/03/26 15:49:14:2136] U: myss_rx: len 0, flags: 2
[2020/03/26 15:49:14:2138] U: myss_state: LWSSSCS_QOS_ACK_REMOTE, ord 0x0
[2020/03/26 15:49:14:2139] N: myss_state: LWSSSCS_QOS_ACK_REMOTE
[2020/03/26 15:49:14:2170] U: myss_state: LWSSSCS_DISCONNECTED, ord 0x0
[2020/03/26 15:49:14:2192] U: myss_state: LWSSSCS_DESTROYING, ord 0x0
[2020/03/26 15:49:14:2265] E: lws_context_destroy3
[2020/03/26 15:49:14:2282] U: Completed: OK