Buffer the entire http header to one packet, and buffer other data in chunks of 4-16 kb.

tests/standalone/io/http_10_test.dart

 // (c) 2013, 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.
 
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 
 import "dart:isolate";
@@ skipping 27 matching lines @@
       Socket.connect("127.0.0.1", server.port).then((socket) {
           socket.write("GET / HTTP/1.0\r\n\r\n");
 
           List<int> response = [];
           socket.listen(
               response.addAll,
               onDone: () {
                 count++;
                 socket.destroy();
                 String s = new String.fromCharCodes(response).toLowerCase();
-                Expect.equals("z", s[s.length - 1]);
                 Expect.isTrue(s.indexOf("\r\ncontent-length: 1\r\n") > 0);
                 Expect.equals(-1, s.indexOf("keep-alive"));
                 if (count < 10) {
                   makeRequest();
                 } else {
                   server.close();
                 }
               });
         });
     }
     makeRequest();
   });
 }
 
 
 // Client makes a HTTP 1.0 request and the server does not set a
 // content length so it has to close the connection to mark the end of
 // the response.
 void testHttp10ServerClose() {
   HttpServer.bind().then((server) {
     server.listen(
         (HttpRequest request) {
           Expect.isNull(request.headers.value('content-length'));
           Expect.equals(-1, request.contentLength);
-          var response = request.response;
-          Expect.equals("1.0", request.protocolVersion);
-          response.write("Z");
-          response.close();
+          request.listen((_) {}, onDone: () {
+            var response = request.response;
+            Expect.equals("1.0", request.protocolVersion);
+            response.write("Z");
+            response.close();
+          });
         },
         onError: (e) => Expect.fail("Unexpected error $e"));
 
     int count = 0;
     makeRequest() {
       Socket.connect("127.0.0.1", server.port).then((socket) {
-        socket.write("GET / HTTP/1.0\r\n\r\n");
+        socket.write("GET / HTTP/1.0\r\n");
         socket.write("Connection: Keep-Alive\r\n\r\n");
 
         List<int> response = [];
         socket.listen(
             response.addAll,
             onDone: () {
               socket.destroy();
               count++;
               String s = new String.fromCharCodes(response).toLowerCase();
-              print(s);
               Expect.equals("z", s[s.length - 1]);
               Expect.equals(-1, s.indexOf("content-length:"));
               Expect.equals(-1, s.indexOf("keep-alive"));
               if (count < 10) {
                 makeRequest();
               } else {
                 server.close();
               }
             },
             onError: (e) => print(e));
@@ skipping 95 matching lines @@
             });
         });
     }
     makeRequest();
   });
 }
 
 
 void main() {
   testHttp10NoKeepAlive();
-  // TODO(8871): This test fails with short socket writes.
-  //testHttp10ServerClose();
+  testHttp10ServerClose();
   testHttp10KeepAlive();
   testHttp10KeepAliveServerCloses();
 }