# Connect

#### 一. P2P Node

{% hint style="info" %}
tcp\://106.75.5.22:38333
{% endhint %}

Sample configuration file：

```
chain=signet

[signet]
rpcallowip=0.0.0.0/0
rpcbind=192.168.2.163
bind=user-machine-ip:38333
server=1
rpcpassword=sathub.pass
rpcuser=sathub.user
connect=106.75.5.22:38333
txindex=1

signetchallenge=5121038cce116112da87846abb3eea7ed6dc04d362f9a5d11dd575bdcd96df8bbd0f11210282a43fc95da4bb52533294867733b70140507745367f11c8c674972c1def3c322103878af834b52bfad5b8904bd41ea06007cf9c411719591d7d4be71dde6a37616653ae

fallbackfee=0.00001
onlynet=ipv4
onlynet=ipv6
noonion=1
deprecatedrpc=create_bdb
```

二. Electrumx Service

{% hint style="info" %}
<https://node.sathub.io:60601>
{% endhint %}

Sample configuration of Electrs is:

```
auth = "rpcuser:rpcpass"

daemon_p2p_addr = "bitcoind-node-ip:38333"
daemon_rpc_addr = "bitcoind-node-ip:38332"

electrum_rpc_addr = "0.0.0.0:60601"

log_filters = "INFO"

network = "signet"

server_banner = "Welcome to Sathub Signet testing ground"

skip_block_download_wait = true

signet_magic = "a92b03d3"

```

Example code with golang:

```
package main
import (
	"context"
	"log"
	"time"
	"github.com/checksum0/go-electrum/electrum"
)
func main() {
	client, err := electrum.NewClientTCP(context.Background(), "node.sathub.io:60601")
	if err != nil {
		log.Fatal(err)
	}

	serverVer, protocolVer, err := client.ServerVersion(context.Background())
	if err != nil {
		log.Fatal(err)
	}
	log.Printf("Server version: %s [Protocol %s]", serverVer, protocolVer)

	go func() {
		for {
			if err := client.Ping(context.Background()); err != nil {
				log.Fatal(err)
			}
			if banner, err := client.ServerBanner(context.Background()); err != nil {
				log.Fatal(err)
			} else {
				log.Printf("Server banner: %s", banner)
			}
			time.Sleep(3 * time.Second)
		}
	}()
	select {}
    }
```

三. Bitcoin Core RPC

{% hint style="info" %}
<http://106.75.5.22:38332>
{% endhint %}

Example code of golang

```
package main
import (
	"log"
	bitcoind "github.com/satshub/go-bitcoind/jsonrpc"
)

const (
	SERVER_HOST        = "106.75.5.22"
	SERVER_PORT        = 38332
	USER               = "sathub.user"
	PASSWD             = "sathub.pass"
	USESSL             = false
)

func main() {
	bc, err := bitcoind.New(SERVER_HOST, SERVER_PORT, USER, PASSWD, USESSL)
	if err != nil {
		log.Fatalln(err)
	}
	// getbestblockhash
	bestblockhash, err := bc.GetBestBlockhash()
	log.Println(err, bestblockhash)
}
```

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