GM_xhr streams can't be canceled #1579
Description
Discussed in #1578
Originally posted by nikitanikolaev01081992 August 21, 2022
Hello,
I have troubles with closing stream from GM_xhr.
I use default reader for stream and it's method cancel.
After closing with this way the script of tampermonkey is crashed.
Can you please provide instructions with proper way of closing GM_xhr's stream?
const unsubscribeStreamButton = document.querySelector('button');
new Promise((resolve, reject) => {
GM_xmlhttprequest({
method: 'GET',
url: '<WORKING_URL>',
responseType: 'stream'
onreadystatechange: (data) => {
if (data.readyState !== 2) {
return;
}
resolve(data.response);
},
onerror: () => {reject('Something wrong')}
})
})
.then(async (stream) => {
const reader = stream.getReader();
unsubscribeStreamButton.addEventListener('click', () => reader.cancel());
while(true) {
const {done, value} = await reader.read();
if (done) {
break;
}
console.log(value);
}
reader.cancel();
})
.catch((error) => console.log(error));