bsc/http.js
2014-10-22 11:41:48 +02:00

53 lines
1.5 KiB
JavaScript

(function () {
var HttpProvider = function (host) {
this.handlers = [];
this.host = host;
};
//TODO unify the format of object passed to 'send method'
function formatJsonRpcObject(object) {
return {
jsonrpc: '2.0',
method: object.call,
params: object.args,
id: object._id
}
};
//TODO unify the format of output messages, maybe there should be objects instead
function formatJsonRpcMessage(message) {
var object = JSON.parse(message);
return JSON.stringify({
_id: object.id,
data: object.result
});
};
HttpProvider.prototype.send = function (payload) {
var data = formatJsonRpcObject(payload);
var request = new XMLHttpRequest();
request.open("POST", this.host, true);
request.send(JSON.stringify(data));
var self = this;
request.onreadystatechange = function () {
if (request.readyState === 4) {
self.handlers.forEach(function (handler) {
handler.call(self, formatJsonRpcMessage(request.responseText));
});
}
}
};
Object.defineProperty(HttpProvider.prototype, "onmessage", {
set: function (handler) {
this.handlers.push(handler);
}
});
if (typeof(web3) !== "undefined" && web3.providers !== undefined) {
web3.providers.HttpProvider = HttpProvider;
}
})();