Avoid using chunked transfer encoding when the HTTP verision is 1.0.

runtime/bin/http_impl.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 class _HttpHeaders implements HttpHeaders {
   _HttpHeaders() : _headers = new Map<String, List<String>>();
 
   List<String> operator[](String name) {
     name = name.toLowerCase();
     return _headers[name];
@@ skipping 381 matching lines @@
   String get queryString() => _queryString;
   Map get queryParameters() => _queryParameters;
 
   InputStream get inputStream() {
     if (_inputStream == null) {
       _inputStream = new _HttpInputStream(this);
     }
     return _inputStream;
   }
 
+  String get protocolVersion() => _protocolVersion;
+
   void _onRequestStart(String method, String uri, String version) {
     _method = method;
     _uri = uri;
     _parseRequestUri(uri);
   }
 
   void _onHeaderReceived(String name, String value) {
     _headers.add(name, value);
   }
 
@@ skipping 191 matching lines @@
       case HttpStatus.GATEWAY_TIMEOUT: return "Gateway Time-out";
       case HttpStatus.HTTP_VERSION_NOT_SUPPORTED:
         return "Http Version not supported";
       default: return "Status $statusCode";
     }
   }
 
   bool _writeHeader() {
     List<int> data;
 
+    // HTTP/1.0 does not support chunked.
+    if (_protocolVersion == "1.0" && _contentLength < 0) {
+      throw new HttpException("Content length required for HTTP 1.0");
+    }
+
     // Write status line.
     if (_protocolVersion == "1.1") {
       _httpConnection._write(_Const.HTTP11);
     } else {
       _httpConnection._write(_Const.HTTP10);
     }
     _writeSP();
     data = _statusCode.toString().charCodes();
     _httpConnection._write(data);
     _writeSP();
@@ skipping 1008 matching lines @@
 
 
 class _RedirectInfo implements RedirectInfo {
   const _RedirectInfo(int this.statusCode,
                       String this.method,
                       Uri this.location);
   final int statusCode;
   final String method;
   final Uri location;
 }