Support [SIP008] Online Config

[zonyitoo]

shadowsocks/shadowsocks-org#89

This feature allows sslocal to update configurations dynamically from a config that hosts on a HTTPS server.

[DuckSoft]

did you mean something like this?

ss-local --sip008 '{"server":"xxxxxx","port":12345,"password":"somerandomnode","method":"aes-128-gcm"}' ....

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in other words, IN WHAT FORM do you want SIP008 to be supported?

[zonyitoo]

$ sslocal --sip008 "https://URL-TO-SSCONF"

Maybe something like this. SIP008 JSON format is the same as the JSON config file that already being accepted by the argument -c.

[fernvenue]

This is gonna be a great feature, actually I'm so surprised that shadowsocks-rust doesn't support SIP008.

[zonyitoo]

Because in practice, the SIP008 configuration file get from an URL usually require some modifications. So what I was doing was:

1. Add a crontab script to download the SIP008 configuration file from an URL
2. Do my modifications, produce a new configuration file
3. Send a signal to sslocal process, and let it reload the configuration file

[fernvenue]

What if make it work as an alternative of "servers": [] part for sslocal and ssservice local? We can still do our modifications locally.

[zonyitoo]

There may be quite a lot of works to do:

1. Run a background task for pulling SIP008 configurations in a fix interval. (EASY)
2. PingBalancer supports updating servers separately from different sources (command line, configuration file, SIP008).
3. Make HTTPS requests to SIP008 URL:
   • Which HTTP library? reqwest should be a choice.
   • Which TLS library? rust-tls for using system provided TLS framework, or rustls.
   • HTTP's outbound sockets should follow the outbound-* configurations. (HARD)

Still wondering how to customize the sockets with reqwest's API.

[fernvenue]

Glad to see shadowsocks-rust supports SIP008 since v1.16.2.