2cfa260e62
This is a NOP for existing usecases. At the moment the only implemented transport for serialized SS is wsi, it's typically used with Unix Domain Sockets, but it also works over tcp the same. It generalizes the interface between serialized chunks and the transport, separately for client and proxy. The wsi transport is migrated to use the new transport ops structs. It will then be possible to "bring your own transport", so long as it is reliable, and in-order, both for proxy and client / sspc. We also adapt minimal-secure-streams-binance to build the -client variant via SS proxy as well. LWS_ONLY_SSPC is added so libwebsockets can be produced with just sspc client support even for tiny targets. A new embedded minimal example for rpi pico is also provided that demonstrates using Serialized SS over a UART to an SS proxy, to implement the SS Binance example on the pico, even though it has no networking itself. |
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|---|---|---|
| .. | ||
| app-event-loop.c | ||
| binance-ss.c | ||
| CMakeLists.txt | ||
| main.c | ||
| policy.json | ||
| private.h | ||
| README.md | ||
| system.c | ||
| transport-serial.c | ||
lws minimal secure streams binance
This is a Secure Streams version of minimal-ws-client-binance.
"policy.json" contains all the information about endpoints, protocols and connection validation, tagged by streamtype name.
The example tries to load it from the cwd, it lives in ./minimal-examples/secure-streams/minimal-secure-streams-binance dir, so either run it from there, or copy the policy.json to your cwd. It's also possible to put the policy json in the code as a string and pass that at context creation time.
The secure stream object represents a nailed-up connection that outlives any single socket connection, and can manage reconnections / retries according to the policy to keep the connection nailed up automatically.
Secure Streams provides the same simplified communication api without any protocol dependencies.
build
Lws must have been built with LWS_ROLE_WS=1, LWS_WITH_SECURE_STREAMS=1, and
LWS_WITHOUT_EXTENSIONS=0
$ cmake . && make
Commandline Options
| Option | Meaning |
|---|---|
| -d | Set logging verbosity |
usage
$ ./bin/lws-minimal-ws-client-binance
[2021/08/15 06:42:40:8409] U: LWS minimal Secure Streams binance client
[2021/08/15 06:42:40:8410] N: LWS: 4.2.99-v4.2.0-156-g8f352f65e8, NET CLI SRV H1 H2 WS SS-JSON-POL SSPROX ConMon FLTINJ IPV6-on
[2021/08/15 06:42:40:8410] N: ++ [495958|wsi|0|pipe] (1)
[2021/08/15 06:42:40:8411] N: ++ [495958|vh|0|netlink] (1)
[2021/08/15 06:42:40:8433] N: ++ [495958|vh|1|digicert||-1] (2)
[2021/08/15 06:42:40:8471] N: ++ [495958|wsiSScli|0|binance] (1)
[2021/08/15 06:42:40:8471] N: [495958|wsiSScli|0|binance]: lws_ss_check_next_state_ss: (unset) -> LWSSSCS_CREATING
[2021/08/15 06:42:40:8472] N: [495958|wsiSScli|0|binance]: lws_ss_check_next_state_ss: LWSSSCS_CREATING -> LWSSSCS_CONNECTING
[2021/08/15 06:42:40:8472] N: ++ [495958|wsicli|0|WS/h1/fstream.binance.com/([495958|wsiSScli|0|binance])] (1)
[2021/08/15 06:42:41:8802] N: [495958|wsiSScli|0|binance]: lws_ss_check_next_state_ss: LWSSSCS_CONNECTING -> LWSSSCS_CONNECTED
[2021/08/15 06:42:42:8803] N: sul_hz_cb: price: min: 4669185¢, max: 4672159¢, avg: 4670061¢, (53 prices/s)
[2021/08/15 06:42:42:8803] N: sul_hz_cb: elatency: min: 131ms, max: 292ms, avg: 154ms, (53 msg/s)
[2021/08/15 06:42:43:8803] N: sul_hz_cb: price: min: 4669646¢, max: 4672159¢, avg: 4669953¢, (34 prices/s)
[2021/08/15 06:42:43:8803] N: sul_hz_cb: elatency: min: 130ms, max: 149ms, avg: 133ms, (34 msg/s)
[2021/08/15 06:42:44:8804] N: sul_hz_cb: price: min: 4669455¢, max: 4672159¢, avg: 4669904¢, (26 prices/s)
...