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Http JSON-RPC provider, http polling, little refactor, whisper #1

Merged
merged 11 commits into from
Oct 30, 2014
70 changes: 70 additions & 0 deletions httprpc.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,70 @@
(function () {
var HttpRpcProvider = function (host) {
this.handlers = [];
this.host = host;
};

function formatJsonRpcObject(object) {
return {
jsonrpc: '2.0',
method: object.call,
params: object.args,
id: object._id
}
};

function formatJsonRpcMessage(message) {
var object = JSON.parse(message);

return {
_id: object.id,
data: object.result
};
};

HttpRpcProvider.prototype.sendRequest = function (payload, cb) {
var data = formatJsonRpcObject(payload);

var request = new XMLHttpRequest();
request.open("POST", this.host, true);
request.send(JSON.stringify(data));
request.onreadystatechange = function () {
if (request.readyState === 4 && cb) {
cb(request);
}
}
};

HttpRpcProvider.prototype.send = function (payload) {
var self = this;
this.sendRequest(payload, function (request) {
self.handlers.forEach(function (handler) {
handler.call(self, formatJsonRpcMessage(request.responseText));
});
});
};

HttpRpcProvider.prototype.poll = function (payload, id) {
var self = this;
this.sendRequest(payload, function (request) {
var parsed = JSON.parse(request.responseText);
if (parsed.result instanceof Array ? parsed.result.length === 0 : !parsed.result) {
return;
}
self.handlers.forEach(function (handler) {
handler.call(self, {_event: payload.call, _id: id, data: parsed.result});
});
});
};

Object.defineProperty(HttpRpcProvider.prototype, "onmessage", {
set: function (handler) {
this.handlers.push(handler);
}
});

if (typeof(web3) !== "undefined" && web3.providers !== undefined) {
web3.providers.HttpRpcProvider = HttpRpcProvider;
}
})();

1 change: 1 addition & 0 deletions index.html
Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
<script type="text/javascript" src="main.js"></script>
<script type="text/javascript" src="websocket.js"></script>
<script type="text/javascript" src="qt.js"></script>
<script type="text/javascript" src="httprpc.js"></script>
<script type="text/javascript">
function registerName() {
var name = document.querySelector("#name").value;
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