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don't subscribeBlockHeaders if subscription exists

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This commit is contained in:
sneurlax 2024-02-06 20:55:31 -06:00
parent 3d42967c8b
commit 46285d44ea
1 changed files with 28 additions and 28 deletions
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56
lib/wallets/wallet/wallet_mixin_interfaces/electrumx_interface.dart
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@ -833,39 +833,39 @@ mixin ElectrumXInterface<T extends Bip39HDCurrency> on Bip39HDWallet<T> {
if (_latestHeight != null) {
return _latestHeight!;
}
}
} else {
// Make sure we only complete once.
bool isFirstResponse = true;
// Make sure we only complete once.
bool isFirstResponse = true;
// Subscribe to block headers.
final subscription =
subscribableElectrumXClient.subscribeToBlockHeaders();
// Subscribe to block headers.
final subscription =
subscribableElectrumXClient.subscribeToBlockHeaders();
// set stream subscription
ElectrumxChainHeightService.subscriptions[cryptoCurrency.coin] =
subscription.responseStream.asBroadcastStream().listen((event) {
final response = event;
if (response != null &&
response is Map &&
response.containsKey('height')) {
final int chainHeight = response['height'] as int;
// print("Current chain height: $chainHeight");
_latestHeight = chainHeight;
// set stream subscription
ElectrumxChainHeightService.subscriptions[cryptoCurrency.coin] ??=
subscription.responseStream.asBroadcastStream().listen((event) {
final response = event;
if (response != null &&
response is Map &&
response.containsKey('height')) {
final int chainHeight = response['height'] as int;
// print("Current chain height: $chainHeight");
_latestHeight = chainHeight;
if (isFirstResponse) {
isFirstResponse = false;
if (isFirstResponse) {
isFirstResponse = false;
// Return the chain height.
completer.complete(chainHeight);
// Return the chain height.
completer.complete(chainHeight);
}
} else {
Logging.instance.log(
"blockchain.headers.subscribe returned malformed response\n"
"Response: $response",
level: LogLevel.Error);
}
} else {
Logging.instance.log(
"blockchain.headers.subscribe returned malformed response\n"
"Response: $response",
level: LogLevel.Error);
}
});
});
}
// Wait for first response.
return completer.future;