stack_wallet/lib/utilities/test_stellar_node_connection.dart

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import 'dart:convert';
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import 'package:stackwallet/networking/http.dart' as http;
import 'package:stackwallet/services/tor_service.dart';
import 'package:stackwallet/utilities/prefs.dart';
import 'package:stellar_flutter_sdk/stellar_flutter_sdk.dart';
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Future<bool> testStellarNodeConnection(String host, int port) async {
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http.HTTP client = http.HTTP();
Uri uri = Uri.parse("$host:$port");
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final response = await client
.get(
url: uri,
headers: {'Content-Type': 'application/json'},
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proxyInfo: Prefs.instance.useTor
? TorService.sharedInstance.getProxyInfo()
: null,
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)
.timeout(const Duration(milliseconds: 2000),
onTimeout: () async => http.Response(utf8.encode('Error'), 408));
if (response.code == 200) {
//Get chain height for sdk
StellarSDK stellarSdk = StellarSDK(host);
final height = await stellarSdk.ledgers
.order(RequestBuilderOrder.DESC)
.limit(1)
.execute()
.then((value) => value.records!.first.sequence)
.onError((error, stackTrace) => throw ("Error getting chain height"));
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if (height > 0) {
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return true;
} else {
return false;
}
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} else {
return false;
}
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}