102 lines
9.7 KiB
Go
102 lines
9.7 KiB
Go
package electrum
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import "sync/atomic"
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// ServerProvider manages a rotating server list, from which callers can pull server addresses.
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type ServerProvider struct {
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nextIndex int32
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}
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// NewServerProvider returns an initialized ServerProvider.
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func NewServerProvider() *ServerProvider {
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return &ServerProvider{-1}
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}
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// NextServer returns an address from the rotating list. It's thread-safe.
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func (p *ServerProvider) NextServer() string {
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index := int(atomic.AddInt32(&p.nextIndex, 1))
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return PublicServers[index%len(PublicServers)]
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}
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// PublicServers list.
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//
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// This list was taken from Electrum repositories, keeping TLS servers and excluding onion URIs.
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// It was then sorted into sections using the `cmd/survey` program, to prioritize the more reliable
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// servers with batch support.
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//
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// See https://github.com/spesmilo/electrum/blob/master/electrum/servers.json
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// See https://github.com/kyuupichan/electrumx/blob/master/electrumx/lib/coins.py
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// See `cmd/survey/main.go`
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//
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var PublicServers = []string{
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// Fast servers with batching
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"blackie.c3-soft.com:57002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.72, speed: 97, from: fortress.qtornado.com:443
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"fullnode.titanconnect.ca:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.66, speed: 86, from: fortress.qtornado.com:443
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"de.poiuty.com:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.76, speed: 78, from: fortress.qtornado.com:443
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"2ex.digitaleveryware.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.68, speed: 68, from: fortress.qtornado.com:443
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"fortress.qtornado.com:443", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.77, speed: 67, from:
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"hodlers.beer:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.74, speed: 64, from: fortress.qtornado.com:443
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"f.keff.org:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.76, speed: 60, from: fortress.qtornado.com:443
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"e2.keff.org:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.75, speed: 58, from:
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"electrum.stippy.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.75, speed: 56, from: fortress.qtornado.com:443
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"electrum.privateservers.network:50002", // impl: ElectrumX 1.15.0, batching: true, ttc: 0.83, speed: 52, from: fortress.qtornado.com:443
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"fulcrum.grey.pw:51002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.79, speed: 49, from: fortress.qtornado.com:443
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"btc.electroncash.dk:60002", // impl: Fulcrum 1.6.0, batching: true, ttc: 0.79, speed: 49, from: fortress.qtornado.com:443
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"node.degga.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.59, speed: 46, from: fortress.qtornado.com:443
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"e.keff.org:50002", // impl: ElectrumX 1.10.0, batching: true, ttc: 0.76, speed: 45, from:
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"bitcoin.aranguren.org:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 1.25, speed: 41, from:
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"electrum.helali.me:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 1.20, speed: 38, from: fortress.qtornado.com:443
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"node1.btccuracao.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.79, speed: 33, from: fortress.qtornado.com:443
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"ASSUREDLY.not.fyi:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.66, speed: 20, from: electrumx.erbium.eu:50002
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"assuredly.not.fyi:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.74, speed: 20, from: fortress.qtornado.com:443
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// Other servers
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"smmalis37.ddns.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.56, speed: 19, from: fortress.qtornado.com:443
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"electrumx.papabyte.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.95, speed: 19, from: fortress.qtornado.com:443
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"electrum.bitaroo.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.98, speed: 19, from: fortress.qtornado.com:443
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"electrum.exan.tech:443", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.08, speed: 19, from: fortress.qtornado.com:443
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"electrum-fulcrum.toggen.net:50002", // impl: Fulcrum 1.6.0, batching: true, ttc: 1.47, speed: 16, from: fortress.qtornado.com:443
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"vmd84592.contaboserver.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.79, speed: 14, from: fortress.qtornado.com:443
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"gd42.org:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.50, speed: 12, from: fortress.qtornado.com:443
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"vmd63185.contaboserver.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.75, speed: 12, from: fortress.qtornado.com:443
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"alfa.cryptotrek.online:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.75, speed: 12, from: fortress.qtornado.com:443
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"electrumx.ultracloud.tk:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.76, speed: 12, from: fortress.qtornado.com:443
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"electrum.brainshome.de:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.89, speed: 12, from: fortress.qtornado.com:443
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"ragtor.duckdns.org:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.91, speed: 12, from: bitcoin.aranguren.org:50002
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"94.23.247.135:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 6.80, speed: 12, from: fortress.qtornado.com:443
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"eai.coincited.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.12, speed: 11, from: electrumx.erbium.eu:50002
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"142.93.6.38:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.56, speed: 11, from: fortress.qtornado.com:443
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"157.245.172.236:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.62, speed: 11, from: fortress.qtornado.com:443
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"electrum.kendigisland.xyz:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.68, speed: 11, from: fortress.qtornado.com:443
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"btc.lastingcoin.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.74, speed: 11, from: fortress.qtornado.com:443
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"xtrum.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.75, speed: 11, from: electrumx.erbium.eu:50002
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"blkhub.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.76, speed: 11, from: fortress.qtornado.com:443
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"electrumx.erbium.eu:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.78, speed: 11, from:
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"185.64.116.15:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.79, speed: 11, from: bitcoin.aranguren.org:50002
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"188.165.206.215:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.81, speed: 11, from: fortress.qtornado.com:443
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"ex03.axalgo.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.92, speed: 11, from: fortress.qtornado.com:443
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"electrum.bitcoinlizard.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.98, speed: 11, from: fortress.qtornado.com:443
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"btce.iiiiiii.biz:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.02, speed: 11, from: fortress.qtornado.com:443
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"btc.ocf.sh:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.15, speed: 11, from: fortress.qtornado.com:443
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"68.183.188.105:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.36, speed: 11, from: fortress.qtornado.com:443
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"vmd71287.contaboserver.net:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.60, speed: 10, from: fortress.qtornado.com:443
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"2electrumx.hopto.me:56022", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.89, speed: 10, from: fortress.qtornado.com:443
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"electrum.emzy.de:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.15, speed: 10, from:
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"electrumx.electricnewyear.net:50002", // impl: ElectrumX 1.15.0, batching: true, ttc: 0.66, speed: 9, from:
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"walle.dedyn.io:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.76, speed: 8, from: fortress.qtornado.com:443
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"caleb.vegas:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.80, speed: 8, from: fortress.qtornado.com:443
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"electrum.neocrypto.io:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.69, speed: 7, from: fortress.qtornado.com:443
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"guichet.centure.cc:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.71, speed: 7, from: fortress.qtornado.com:443
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"167.172.42.31:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.75, speed: 7, from: fortress.qtornado.com:443
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"2AZZARITA.hopto.org:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.77, speed: 7, from: fortress.qtornado.com:443
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"jonas.reptiles.se:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.95, speed: 7, from: fortress.qtornado.com:443
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"167.172.226.175:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.61, speed: 6, from: fortress.qtornado.com:443
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"electrum-btc.leblancnet.us:50002", // impl: ElectrumX 1.15.0, batching: true, ttc: 0.64, speed: 6, from: fortress.qtornado.com:443
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"104.248.139.211:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 0.90, speed: 6, from: fortress.qtornado.com:443
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"elx.bitske.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.01, speed: 6, from: fortress.qtornado.com:443
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"kareoke.qoppa.org:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.18, speed: 6, from: electrumx.erbium.eu:50002
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"ex.btcmp.com:50002", // impl: ElectrumX 1.16.0, batching: true, ttc: 1.12, speed: 5, from: fortress.qtornado.com:443
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"bitcoins.sk:56002", // impl: ElectrumX 1.14.0, batching: true, ttc: 0.77, speed: 3, from: fortress.qtornado.com:443
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"73.92.198.54:50002", // impl: ElectrumX 1.15.0, batching: true, ttc: 5.57, speed: 0, from: fortress.qtornado.com:443
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}
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