Merge pull request #494 from chjj/fix_paypro_example2

Fix Payment Protocol example in the browser

examples/PayPro/README.md

@@ -65,3 +65,10 @@ testnet coins, you can pass `--no-tx` on the server command line.
 
 If you don't want the tests to run automatically and simply host the payment
 server, simply pass `--browser` (`-b`) as mentioned above.
+
+## Using the example in a modular manner
+
+``` js
+var server = require('bitcore/examples/PayPro');
+server.listen(8080);
+```

examples/PayPro/customer.js

@@ -62,45 +62,7 @@ var merchant = isNode
 if (isNode) {
   var Buffer = global.Buffer;
 } else {
-  var Buffer = function Buffer(data) {
-    var ab = new ArrayBuffer(data.length);
-    var view = new Uint8Array(ab);
-    data._size = data.length;
-    for (var i = 0; i < data._size; i++) {
-      view[i] = data[i];
-    }
-    if (!view.slice) {
-      // view.slice = ab.slice.bind(ab);
-      view.slice = function(start, end) {
-        if (end < 0) {
-          end = data._size + end;
-        }
-        data._size = end - start;
-        var ab = new ArrayBuffer(data._size);
-        var view = new Uint8Array(ab);
-        for (var i = 0, j = start; j < end; i++, j++) {
-          view[i] = data[j];
-        }
-        return view;
-      };
-    }
-    return view;
-  };
-  Buffer.byteLength = function(buf) {
-    var bytes = 0
-      , ch;
-
-    for (var i = 0; i < buf.length; i++) {
-      ch = buf.charCodeAt(i);
-      if (ch > 0xff) {
-        bytes += 2;
-      } else {
-        bytes++;
-      }
-    }
-
-    return bytes;
-  };
+  var Buffer = bitcore.Buffer;
 }
 
 function request(options, callback) {
@@ -281,7 +243,11 @@ function sendPayment(msg, callback) {
       if (tx.buffer) {
         tx.buffer = tx.buffer.slice(tx.offset, tx.limit);
         var ptx = new bitcore.Transaction();
-        ptx.parse(tx.buffer);
+
+        var parser = new bitcore.BinaryParser(tx.buffer);
+        ptx.parse(parser);
+        // ptx.parse(tx.buffer);
+
         tx = ptx;
       }
       var txid = tx.getHash().toString('hex');
@@ -370,17 +336,7 @@ function createTX(outputs) {
     'scriptPubKey': '76a94c14460376539c219c5e3274d86f16b40e806b37817688ac',
     'amount': 1.60000000,
     'confirmations': 9
-  }
-  ];
-
-  // define transaction output
-  var outs = [];
-  outputs.forEach(function(output) {
-    outs.push({
-      address: addrs[0], // dummy address
-      amount: 0 // dummy value
-    });
-  });
+  }];
 
   // set change address
   var opts = {
@@ -389,29 +345,59 @@ function createTX(outputs) {
     }
   };
 
-  var tx = new TransactionBuilder(opts)
+  var outs = [];
+  outputs.forEach(function(output) {
+    var amount = output.get('amount');
+    var script = {
+      offset: output.get('script').offset,
+      limit: output.get('script').limit,
+      buffer: new Buffer(new Uint8Array(
+        output.get('script').buffer))
+    };
+
+    // big endian
+    var v = new Buffer(8);
+    v[0] = (amount.high >> 24) & 0xff;
+    v[1] = (amount.high >> 16) & 0xff;
+    v[2] = (amount.high >> 8) & 0xff;
+    v[3] = (amount.high >> 0) & 0xff;
+    v[4] = (amount.low >> 24) & 0xff;
+    v[5] = (amount.low >> 16) & 0xff;
+    v[6] = (amount.low >> 8) & 0xff;
+    v[7] = (amount.low >> 0) & 0xff;
+
+    var s = script.buffer.slice(script.offset, script.limit);
+    var addr = bitcore.Address.fromScriptPubKey(new bitcore.Script(s), 'testnet');
+
+    outs.push({
+      address: addr.toString(),
+      amountSatStr: bitcore.Bignum.fromBuffer(v, {
+        // XXX for some reason, endian is ALWAYS 'big'
+        // in node (in the browser it behaves correctly)
+        endian: 'big',
+        size: 1
+      }).toString(10)
+    });
+  });
+
+  var b = new bitcore.TransactionBuilder(opts)
     .setUnspent(unspent)
     .setOutputs(outs)
-    .sign(keys)
-    .build();
+    .sign(keys);
 
   outputs.forEach(function(output, i) {
-    var value = output.get('amount');
-    var script = output.get('script');
-    var v = new Buffer(8);
-    v[0] = (value.low >> 0) & 0xff;
-    v[1] = (value.low >> 8) & 0xff;
-    v[2] = (value.low >> 16) & 0xff;
-    v[3] = (value.low >> 24) & 0xff;
-    v[4] = (value.high >> 0) & 0xff;
-    v[5] = (value.high >> 8) & 0xff;
-    v[6] = (value.high >> 16) & 0xff;
-    v[7] = (value.high >> 24) & 0xff;
+    var script = {
+      offset: output.get('script').offset,
+      limit: output.get('script').limit,
+      buffer: new Buffer(new Uint8Array(
+        output.get('script').buffer))
+    };
     var s = script.buffer.slice(script.offset, script.limit);
-    tx.outs[i].v = v;
-    tx.outs[i].s = s;
+    b.tx.outs[i].s = s;
   });
 
+  var tx = b.build();
+
   print('');
   print('Customer created transaction:');
   print(tx.getStandardizedObject());

examples/PayPro/server.js

@@ -48,11 +48,11 @@ var server = https.createServer({
   cert: fs.readFileSync(__dirname + '/../../test/data/x509.crt')
 });
 
-server.setOptions = function(options) {
-  argv = options;
-};
+server.options = argv;
 
-var isNode = !argv.b && !argv.browser;
+server.setOptions = function(options) {
+  server.options = argv = options;
+};
 
 var app = express();
 
@@ -409,22 +409,29 @@ function error() {
 
 server.on('request', app);
 server.app = app;
-server.port = +argv.p || +argv.port || 8080;
+server.port = 8080;
+server.isNode = true;
 
-if (argv.s) {
-  server.listen(server.port);
-  return;
-}
-
-if (!module.parent || path.basename(module.parent.filename) === 'index.js') {
-  server.listen(server.port, function(addr) {
-    if (!isNode) return;
-    var customer = require('./customer');
-    customer.sendPayment(function(err) {
-      if (err) return error(err.message);
-      customer.print('Payment sent successfully.');
+setTimeout(function() {
+  server.port = argv.p = argv.port = +argv.p || +argv.port || 8080;
+  server.isNode = !argv.b && !argv.browser;
+  if (argv.s || argv.server || argv.l || argv.listen) {
+    server.listen(server.port, function(addr) {
+      print('Listening on port %s.', server.port);
     });
-  });
-} else {
-  module.exports = server;
-}
+    return;
+  }
+  if (!module.parent || path.basename(module.parent.filename) === 'index.js') {
+    server.listen(server.port, function(addr) {
+      print('Listening on port %s.', server.port);
+      if (!server.isNode) return;
+      var customer = require('./customer');
+      customer.sendPayment(function(err) {
+        if (err) return error(err.message);
+        customer.print('Payment sent successfully.');
+      });
+    });
+  }
+}, 1);
+
+module.exports = server;