Bugfix: negative integers in raw encoding stream.

Add test. Reported by Tim Caswell.

src/net.cc

@@ -437,7 +437,7 @@ Connection::OnReceive (const void *buf, size_t len)
       // raw encoding
       Local<Array> array = Array::New(len);
       for (size_t i = 0; i < len; i++) {
-        char val = static_cast<const char*>(buf)[i];
+        unsigned char val = static_cast<const unsigned char*>(buf)[i];
         array->Set(Integer::New(i), Integer::New(val));
       }
       argv[0] = array;

test/mjsunit/test-tcp-raw.js

@@ -0,0 +1,47 @@
+include("mjsunit.js");
+PORT = 23123;
+
+var echoServer = node.tcp.createServer(function (connection) {
+  connection.addListener("receive", function (chunk) {
+    connection.send(chunk, "raw");
+  });
+  connection.addListener("eof", function () {
+    connection.close();
+  });
+});
+echoServer.listen(PORT);
+
+var recv = [];
+var j = 0;
+
+function onLoad () {
+  var c = node.tcp.createConnection(PORT);
+
+  c.addListener("receive", function (chunk) {
+    if (++j < 256) {
+      c.send([j], "raw");
+    } else {
+      c.close();
+    }
+    for (var i = 0; i < chunk.length; i++) {
+      recv.push(chunk[i]);
+    }
+  });
+
+  c.addListener("connect", function () {
+    c.send([j], "raw");
+  });
+
+  c.addListener("disconnect", function () {
+    p(recv);
+    echoServer.close();
+  });
+};
+
+function onExit () {
+  var expected = [];
+  for (var i = 0; i < 256; i++) {
+    expected.push(i);
+  }
+  assertEquals(expected, recv);
+}