📡 MineQuery

Minecraft Server List Ping library written in Go

🚀 Migrating from v2 or v1

If you're new to MineQuery, you can skip this part. If you have used it before, you might want to give it a read if you're planning to switch from v1, or want to know about breaking changes in v2.x.x version and how to adapt your codebase.

See MIGRATING.md for help with migrating from MineQuery.

✨ Features

⛏ Minecraft Version Support

MineQuery supports pinging of all versions of Minecraft.

📡 Query Protocol Support

MineQuery v2.1.0+ fully supports Query protocol.

🏷 SRV Record Support

MineQuery v2.5.0+ fully supports SRV records.

📚 How to use

Basic usage

For simple pinging with default parameters, use package-global Ping* functions (where * is your respective Minecraft server version.)

If you're unsure about version, it is known that Notchian servers respond to all previous version pings (e.g. 1.7+ server will respond to 1.6 ping, and so on.)

Here's a quick example how to:

Pinging (1.7+ servers)

import "github.com/dreamscached/minequery/v2"

res, err := minequery.Ping17("localhost", 25565)
if err != nil { panic(err) }
fmt.Println(res)

Querying

import "github.com/dreamscached/minequery/v2"

res, err := minequery.QueryBasic("localhost", 25565)
// ... or ...
res, err := minequery.QueryFull("localhost", 25565)
if err != nil { panic(err) }
fmt.Println(res)

For full info on response object structure, see documentation.

Advanced usage

Pinger

For more advanced usage, such as setting custom timeout or enabling more strict response validation, you can use Pinger struct with PingerOption passed to it:

import "github.com/dreamscached/minequery/v2"

pinger := minequery.NewPinger(
minequery.WithTimeout(5 * time.Second),
minequery.WithUseStrict(true),
minequery.WithProtocolVersion16(minequery.Ping16ProtocolVersion162),
minequery.WithProtocolVersion17(minequery.Ping17ProtocolVersion172),
)

Then, use Ping* functions on it the same way as described in Basic usage section:

import "github.com/dreamscached/minequery/v2"

// Ping Beta 1.8+
pinger.PingBeta18("localhost", 25565)
// Ping 1.4+
pinger.Ping14("localhost", 25565)
// Ping 1.6+
pinger.Ping16("localhost", 25565)
// Ping 1.7+
pinger.Ping17("localhost", 25565)

Or Query*:

import "github.com/dreamscached/minequery/v2"

// Query basic stats
res, err := pinger.QueryBasic("localhost", 25565)
// Query full stats
res, err := pinger.QueryFull("localhost", 25565)

WithTimeout

By default, Pinger has 15-second timeout before connection aborts. If you need to customize this duration, you can use WithTimeout option.

WithUseStrict

By default, Pinger does not validate response data it receives and silently omits erroneous values it processes (incorrect favicon or bad player UUID). If you need it to return an error in case of invalid response, you can use WithUseStrict option.

WithQueryCacheExpiry

By default, Pinger stores query sessions in cache for 30 seconds and flushes expired entries every 5 minutes. If you want to override these defaults, use WithQueryCacheExpiry option.

WithQueryCacheDisabled

By default, Pinger stores query sessions in cache, reusing sessions and security tokens and saving bandwidth. If you don't want to use session cache, use WithQueryCacheDisabled option.

WithQueryCache

By default, Pinger stores query sessions using patrickmn/go-cache library (and WithQueryCacheExpiry/WithQueryCacheDisabled only affect this implementation of cache for Go). If you wish to use other cache implementation, you can use any that implements Cache interface.

WithProtocolVersion16

By default, Pinger sends protocol version 74 in 1.6 ping packets. If you need to customize protocol version sent, use WithProtocolVersion16. MineQuery provides a convenient set of constants you can use — see Ping16ProtocolVersion* constants.

WithProtocolVersion17

By default, Pinger sends protocol version -1 in 1.7 ping packets. If you need to customize protocol version sent, use WithProtocolVersion17. MineQuery provides a convenient set of constants you can use — see Ping17ProtocolVersion* constants.

WithUnmarshaller

By default, Pinger uses standard Go json.Unmarshal function to unmarshal JSON which can be slow compared to alternatives. If you need to use another unmarshaller library, you can use this option to provide an Unmarshaller implementation that will be used instead.

WithImageDecoder

By default, Pinger uses standard Go png.Decode function to decode PNG from binary stream. If you need to use another decoding library, you can use this option to provide png.Decode-compatible function that will be used instead.

WithImageEncoding

By default, Pinger uses standard Go base64.StdEncoding encoding to decode Base64 string returned in 1.7+ responses. If you need to use another encoding, you can use this option to provide a compatible implementation that will be used instead.