Send only one byte of data in the first CBC encrypted aplication data

net/socket/ssl_client_socket_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/socket/ssl_client_socket.h"
 
 #include "net/base/address_list.h"
 #include "net/base/cert_verifier.h"
 #include "net/base/host_resolver.h"
 #include "net/base/io_buffer.h"
@@ skipping 384 matching lines @@
   scoped_refptr<net::IOBuffer> buf(new net::IOBuffer(4096));
   rv = sock->Read(buf, 4096, &callback);
   // We haven't written the request, so there should be no response yet.
   ASSERT_EQ(net::ERR_IO_PENDING, rv);
 
   // Write the request.
   // The request is padded with a User-Agent header to a size that causes the
   // memio circular buffer (4k bytes) in SSLClientSocketNSS to wrap around.
   // This tests the fix for http://crbug.com/29815.
   std::string request_text = "GET / HTTP/1.1\r\nUser-Agent: long browser name ";
-  for (int i = 0; i < 3800; ++i)
+  for (int i = 0; i < 3770; ++i)
     request_text.push_back('*');
   request_text.append("\r\n\r\n");
   scoped_refptr<net::IOBuffer> request_buffer(
       new net::StringIOBuffer(request_text));
 
   rv = sock->Write(request_buffer, request_text.size(), &callback2);
   EXPECT_TRUE(rv >= 0 || rv == net::ERR_IO_PENDING);
 
   if (rv == net::ERR_IO_PENDING)
     rv = callback2.WaitForResult();
@@ skipping 282 matching lines @@
   // to being an error such as a certificate name mismatch, which is
   // client-only, the exact index of the SSL connect end depends on how
   // quickly the test server closes the underlying socket. If the test server
   // closes before the IO message loop pumps messages, there may be a 0-byte
   // Read event in the NetLog due to TCPClientSocket picking up the EOF. As a
   // result, the SSL connect end event will be the second-to-last entry,
   // rather than the last entry.
   EXPECT_TRUE(LogContainsSSLConnectEndEvent(entries, -1) ||
               LogContainsSSLConnectEndEvent(entries, -2));
 }