diff --git a/httprpc.js b/httprpc.js new file mode 100644 index 000000000..085b4693d --- /dev/null +++ b/httprpc.js @@ -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; + } +})(); + diff --git a/index.html b/index.html index fc658c00a..2b3f50a14 100644 --- a/index.html +++ b/index.html @@ -5,6 +5,7 @@ +