/usr/local/bin/etcd \
  --name s1 \
  --data-dir /etcd-data \
  --listen-client-urls http://0.0.0.0:2379 \
  --advertise-client-urls http://0.0.0.0:2379 \
  --listen-peer-urls http://0.0.0.0:2380 \
  --initial-advertise-peer-urls http://0.0.0.0:2380 \
  --initial-cluster s1=http://0.0.0.0:2380 \
  --initial-cluster-token tkn \
  --initial-cluster-state new
```

      length = byteCount,
      type = TYPE_DATA,
      flags = flags,
    )
    if (byteCount > 0) {
      sink.write(buffer!!, byteCount.toLong())
    }
  }

  /** Write okhttp's settings to the peer. */
  @Throws(IOException::class)
  fun settings(settings: Settings) {
    withLock {
      if (closed) throw IOException("closed")
      frameHeader(
        streamId = 0,
        length = settings.size() * 6,

This feature allows multiple independent MinIO sites (or clusters) that are using the same external IDentity Provider (IDP) to be configured as replicas. In this situation the set of replica sites are referred to as peer sites or just sites. When site-replication is enabled on a set of sites, the following changes are replicated to all other sites:

- Creation and deletion of buckets and objects

    fun ackSettings()

    /**
     * Read a connection-level ping from the peer. `ack` indicates this is a reply. The data
     * in `payload1` and `payload2` opaque binary, and there are no rules on the content.
     */
    fun ping(
      ack: Boolean,
      payload1: Int,
      payload2: Int,
    )

    /**
     * The peer tells us to stop creating streams. It is safe to replay streams with

)

var (
	processLocksReadTotalMD           = NewGaugeMD(processLocksReadTotal, "Number of current READ locks on this peer")
	processLocksWriteTotalMD          = NewGaugeMD(processLocksWriteTotal, "Number of current WRITE locks on this peer")
	processCPUTotalSecondsMD          = NewCounterMD(processCPUTotalSeconds, "Total user and system CPU time spent in seconds")

                // drop through...
            }
        }

        // assume custom type is in same class space as default
        final ClassLoader peer = defaultClazz.getClassLoader();
        if (peer != null) {
            try {
                return peer.loadClass(name);
            } catch (final Exception e) {
                // drop through...
            } catch (final LinkageError e) {

            while (headerBuffer.hasRemaining()) {
                int read = socketChannel.read(headerBuffer);
                if (read < 0) {
                    throw new IOException("Connection closed by peer");
                }
            }

            headerBuffer.flip();
            int messageSize = headerBuffer.getInt();

            // Now read the message body

}

// getRemoteARNForPeer returns the remote target for a peer site in site replication
func (sys *BucketTargetSys) getRemoteARNForPeer(bucket string, peer madmin.PeerInfo) string {
	sys.RLock()
	defer sys.RUnlock()
	tgts := sys.targetsMap[bucket]
	for _, target := range tgts {
		ep, _ := url.Parse(peer.Endpoint)
		if target.SourceBucket == bucket &&
			target.TargetBucket == bucket &&

URLs are abstract:

    return result
  }

  class Builder {
    internal val namesAndValues: MutableList<String> = ArrayList(20)

    /**
     * Add a header line without any validation. Only appropriate for headers from the remote peer
     * or cache.
     */
    internal fun addLenient(line: String) =
      apply {
        val index = line.indexOf(':', 1)
        when {
          index != -1 -> {