[Feature Request] Accept multiple passwords on a single port

[database64128]

Reference implementations

• https://github.com/Jigsaw-Code/outline-ss-server
• https://github.com/Qv2ray/mmp-go

Possible config format

{
    "servers": [
        {
            "server": "::",
            "server_port": 12345,
            "method": "aes-256-gcm",
            "passwords": {
                "0": "144537e6-08f4-4110-a7f4-aba6da8be7f2", // When reloading, identify individual passwords with the number (0 in this case).
                "1": "33ae69d4-6bd6-41ec-b6b9-05f0412e7171"
            },
            "remarks": "Service A",
            "id": "5d91abc7-3ee7-41c9-a9e8-49a7e84450c7" // Used to identify servers when reloading.
        },
        {
            "server": "example.com",
            "server_port": 54321,
            "method": "chacha20-ietf-poly1305",
            "password": "example",
            "remarks": "Service B",
            "id": "9185279e-25c2-4438-913a-dfe3d01f9bb4" // Used to identify servers when reloading.
        }
    ]
}

[pyy]

Will in this way it save memory usage on the remote server? compare to multiple instance on different port.

[zonyitoo]

It will, but shouldn’t be significant.

[lzm0]

Would like to see this feature to be supported

[kallydev]

Would like to see this feature to be supported

Since shadowsocks protocol doesn't consider multi-user authentication, I recommend implementing it in SIP 003 plugin.

[fortuna]

I have a discussion on the optimizations we did for Outline at shadowsocks/shadowsocks-org#130

In practice, the trial decryption is not an issue at all.

[database64128]

Now that we have Shadowsocks 2022 Extensible Identity Headers for native multi-user support (although shadowsocks-rust hasn't implemented it yet), I'm closing this issue.

[database64128]

Support for Shadowsocks 2022 EIH just landed: ac225f0

We now also have the equivalent of mmp-go for Shadowsocks 2022: https://github.com/SagerNet/sing-tools/tree/main/cli/ss-relay