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This adds a per-streamtype JSON mapping table in the policy.
In addition to the previous flow, it lets you generate custom
SS state notifications for specific http response codes, eg:
"http_resp_map": [ { "530": 1530 }, { "531": 1531 } ],
It's not recommended to overload the transport-layer response
code with application layer responses. It's better to return
a 200 and then in the application protocol inside http, explain
what happened from the application perspective, usually with
JSON. But this is designed to let you handle existing systems
that do overload the transport layer response code.
SS states for user use start at LWSSSCS_USER_BASE, which is
1000.
You can do a basic test with minimal-secure-streams and --respmap
flag, this will go to httpbin.org and get a 404, and the warmcat.com
policy has the mapping for 404 -> LWSSSCS_USER_BASE (1000).
Since the mapping emits states, these are serialized and handled
like any other state in the proxy case.
The policy2c example / tool is also updated to handle the additional
mapping tables.
|
||
|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| minimal-secure-streams.c | ||
| README.md | ||
lws minimal secure streams policy2c
This application parses a JSON policy passed on stdin and emits the equivalent of it in C structs ready for compilation.
This is useful in the case your platform doesn't use a dynamic JSON policy and is space-constrained, you can still form and maintain the policy in JSON, but with this utility convert it into compileable C.
Notice this depends on LWS_ROLE_H1, LWS_ROLE_H2, LWS_ROLE_WS and LWS_ROLE_MQTT build of lws, since it has to be able to work with any kind of policy content.
build
$ cmake . && make
usage
| Commandline option | Meaning |
|---|---|
| -d | Debug verbosity in decimal, eg, -d15 |
$ cat mypolicy.json | lws-minimal-secure-streams-policy2c
(on stdout)
static const uint32_t _rbo_bo_0[] = {
1000, 2000, 3000, 5000, 10000,
};
static const lws_retry_bo_t _rbo_0 = {
.retry_ms_table = _rbo_bo_0,
.retry_ms_table_count = 5,
.conceal_count = 5,
.secs_since_valid_ping = 30,
.secs_since_valid_hangup = 35,
.jitter_percent = 20,
};
static const uint8_t _ss_der_amazon_root_ca_1[] = {
/* 0x 0 */ 0x30, 0x82, 0x03, 0x41, 0x30, 0x82, 0x02, 0x29,
/* 0x 8 */ 0xA0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x13, 0x06,
/* 0x 10 */ 0x6C, 0x9F, 0xCF, 0x99, 0xBF, 0x8C, 0x0A, 0x39,
/* 0x 18 */ 0xE2, 0xF0, 0x78, 0x8A, 0x43, 0xE6, 0x96, 0x36,
/* 0x 20 */ 0x5B, 0xCA, 0x30, 0x0D, 0x06, 0x09, 0x2A, 0x86,
...