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Clean up observer when component dismount

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Franck Royer 2021-06-16 16:36:12 +10:00
parent 1d3f0e4c8a
commit 4e7f75868f
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1 changed files with 17 additions and 0 deletions
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17
examples/eth-dm/src/App.tsx
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@ -72,6 +72,11 @@ function App() {
useEffect(() => { useEffect(() => {
if (!waku) return; if (!waku) return;
waku.relay.addObserver(observerPublicKeyMessage, [PublicKeyContentTopic]); waku.relay.addObserver(observerPublicKeyMessage, [PublicKeyContentTopic]);
return function cleanUp() {
if (!waku) return;
waku.relay.deleteObserver(observerPublicKeyMessage, [PublicKeyContentTopic]);
}
}); });
useEffect(() => { useEffect(() => {
@ -81,6 +86,16 @@ function App() {
observerDirectMessage.bind({}, ethDmKeyPair.privateKey), observerDirectMessage.bind({}, ethDmKeyPair.privateKey),
[DirectMessageContentTopic] [DirectMessageContentTopic]
); );
return function cleanUp() {
if (!waku) return;
if (!ethDmKeyPair) return;
waku.relay.deleteObserver(
observerDirectMessage.bind({}, ethDmKeyPair.privateKey),
[DirectMessageContentTopic]
);
}
}); });
const broadcastPublicKey = () => { const broadcastPublicKey = () => {
@ -109,6 +124,8 @@ function App() {
}; };
const sendDummyMessage = () => { const sendDummyMessage = () => {
if (!waku) return;
console.log(`Sending messages to ${publicKeys.size} peers`); console.log(`Sending messages to ${publicKeys.size} peers`);
publicKeys.forEach(async (publicKey, address) => { publicKeys.forEach(async (publicKey, address) => {
const msg = await encodeEncryptedWakuMessage( const msg = await encodeEncryptedWakuMessage(