1 files changed, 95 insertions, 0 deletions
diff --git a/cmd/ethtest/lib/httprpc.js b/cmd/ethtest/lib/httprpc.js
new file mode 100644
index 000000000..ee6b5c307
--- /dev/null
+++ b/cmd/ethtest/lib/httprpc.js
@@ -0,0 +1,95 @@
+/*
+    This file is part of ethereum.js.
+
+    ethereum.js is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    ethereum.js is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with ethereum.js.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file httprpc.js
+ * @authors:
+ *   Marek Kotewicz <marek@ethdev.com>
+ *   Marian Oancea <marian@ethdev.com>
+ * @date 2014
+ */
+
+// TODO: work out which of the following two lines it is supposed to be...
+//if (process.env.NODE_ENV !== 'build') {
+if ("build" !== "build") {/*
+    var XMLHttpRequest = require('xmlhttprequest').XMLHttpRequest; // jshint ignore:line
+*/}
+
+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,
+        error: object.error
+    };
+}
+
+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.error || (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);
+    }
+});
+
+module.exports = HttpRpcProvider;