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Relay Selection

The SelectProxies() function picks Mullvad relays to use as SOCKS5 proxies, applying configurable filters to the relay list.

How It Works​

SelectProxies iterates over all WireGuard relays in the loaded relay list and applies these mandatory filters:

  • Active must be true
  • IncludeInCountry must be true

Then it applies the optional filters from a RelayFilter:

FilterTypeDescription
Location*regexp.RegexpMatch the relay's location string against a regex pattern. nil matches all.
Owned*boolFilter by ownership. nil = any, true = Mullvad-owned only, false = rented only.
Weightfunc(int) boolCustom predicate on the relay's weight value. nil = no weight filter.

Hostname Transformation​

Mullvad relays have WireGuard hostnames like se-mma-wg-001. To get the SOCKS5 proxy hostname, odirscan replaces -wg- with -wg-socks5-:

se-mma-wg-001 -> se-mma-wg-socks5-001

The full proxy URL is then:

socks5://se-mma-wg-socks5-001.relays.mullvad.net:1080

Limit​

The limit parameter controls how many proxies to return. Set to 0 or negative for no limit. The default configuration requests up to 50 proxies.

Default Filter​

The default scanner configuration uses a weight filter:

filter := mullvad.RelayFilter{
    Weight: func(num int) bool {
        return num <= cfg.MaxRelayWeight // default: 99
    },
}

This excludes only the highest-weight relays, giving a broad selection of proxies for round-robin rotation.