lbry-desktop/ui/js/jsonrpc.js

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const jsonrpc = {};
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jsonrpc.call = function(
connectionString,
method,
params,
callback,
errorCallback,
connectFailedCallback,
timeout
) {
var xhr = new XMLHttpRequest();
if (typeof connectFailedCallback !== 'undefined') {
if (timeout) {
xhr.timeout = timeout;
}
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xhr.addEventListener('error', function(e) {
connectFailedCallback(e);
});
xhr.addEventListener('timeout', function() {
connectFailedCallback(
new Error(__('XMLHttpRequest connection timed out'))
);
});
}
xhr.addEventListener('load', function() {
var response = JSON.parse(xhr.responseText);
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if (response.error) {
if (errorCallback) {
errorCallback(response.error);
} else {
var errorEvent = new CustomEvent('unhandledError', {
detail: {
connectionString: connectionString,
method: method,
params: params,
code: response.error.code,
message: response.error.message,
data: response.error.data
}
});
document.dispatchEvent(errorEvent);
}
} else if (callback) {
callback(response.result);
}
});
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if (connectFailedCallback) {
xhr.addEventListener('error', function(event) {
connectFailedCallback(event);
});
} else {
xhr.addEventListener('error', function(event) {
var errorEvent = new CustomEvent('unhandledError', {
detail: {
connectionString: connectionString,
method: method,
params: params,
code: xhr.status,
message: __('Connection to API server failed')
}
});
document.dispatchEvent(errorEvent);
});
}
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const counter = parseInt(sessionStorage.getItem('JSONRPCCounter') || 0);
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xhr.open('POST', connectionString, true);
xhr.send(
JSON.stringify({
jsonrpc: '2.0',
method: method,
params: params,
id: counter
})
);
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sessionStorage.setItem('JSONRPCCounter', counter + 1);
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return xhr;
};
export default jsonrpc;