Revert HTTP/0.9 removal (https://codereview.chromium.org/2144803002/)

net/http/http_network_transaction_unittest.cc

 // Copyright 2013 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/http/http_network_transaction.h"
 
 #include <math.h>  // ceil
 #include <stdarg.h>
 #include <stdint.h>
 
@@ skipping 685 matching lines @@
 }
 
 // Response with no status line.
 TEST_F(HttpNetworkTransactionTest, SimpleGETNoHeaders) {
   MockRead data_reads[] = {
     MockRead("hello world"),
     MockRead(SYNCHRONOUS, OK),
   };
   SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                               arraysize(data_reads));
-  EXPECT_THAT(out.rv, IsError(ERR_INVALID_HTTP_RESPONSE));
+  EXPECT_THAT(out.rv, IsOk());
+  EXPECT_EQ("HTTP/0.9 200 OK", out.status_line);
+  EXPECT_EQ("hello world", out.response_data);
+  int64_t reads_size = CountReadBytes(data_reads, arraysize(data_reads));
+  EXPECT_EQ(reads_size, out.total_received_bytes);
 }
 
 // Allow up to 4 bytes of junk to precede status line.
 TEST_F(HttpNetworkTransactionTest, StatusLineJunk3Bytes) {
   MockRead data_reads[] = {
     MockRead("xxxHTTP/1.0 404 Not Found\nServer: blah\n\nDATA"),
     MockRead(SYNCHRONOUS, OK),
   };
   SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                               arraysize(data_reads));
@@ skipping 20 matching lines @@
 }
 
 // Beyond 4 bytes of slop and it should fail to find a status line.
 TEST_F(HttpNetworkTransactionTest, StatusLineJunk5Bytes) {
   MockRead data_reads[] = {
     MockRead("xxxxxHTTP/1.1 404 Not Found\nServer: blah"),
     MockRead(SYNCHRONOUS, OK),
   };
   SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                               arraysize(data_reads));
-  EXPECT_THAT(out.rv, IsError(ERR_INVALID_HTTP_RESPONSE));
+  EXPECT_THAT(out.rv, IsOk());
+  EXPECT_EQ("HTTP/0.9 200 OK", out.status_line);
+  EXPECT_EQ("xxxxxHTTP/1.1 404 Not Found\nServer: blah", out.response_data);
+  int64_t reads_size = CountReadBytes(data_reads, arraysize(data_reads));
+  EXPECT_EQ(reads_size, out.total_received_bytes);
 }
 
 // Same as StatusLineJunk4Bytes, except the read chunks are smaller.
 TEST_F(HttpNetworkTransactionTest, StatusLineJunk4Bytes_Slow) {
   MockRead data_reads[] = {
     MockRead("\n"),
     MockRead("\n"),
     MockRead("Q"),
     MockRead("J"),
     MockRead("HTTP/1.0 404 Not Found\nServer: blah\n\nDATA"),
     MockRead(SYNCHRONOUS, OK),
   };
   SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                               arraysize(data_reads));
   EXPECT_THAT(out.rv, IsOk());
   EXPECT_EQ("HTTP/1.0 404 Not Found", out.status_line);
   EXPECT_EQ("DATA", out.response_data);
   int64_t reads_size = CountReadBytes(data_reads, arraysize(data_reads));
   EXPECT_EQ(reads_size, out.total_received_bytes);
 }
 
 // Close the connection before enough bytes to have a status line.
 TEST_F(HttpNetworkTransactionTest, StatusLinePartial) {
   MockRead data_reads[] = {
     MockRead("HTT"),
     MockRead(SYNCHRONOUS, OK),
   };
   SimpleGetHelperResult out = SimpleGetHelper(data_reads,
                                               arraysize(data_reads));
-  EXPECT_THAT(out.rv, IsError(ERR_INVALID_HTTP_RESPONSE));
+  EXPECT_THAT(out.rv, IsOk());
+  EXPECT_EQ("HTTP/0.9 200 OK", out.status_line);
+  EXPECT_EQ("HTT", out.response_data);
+  int64_t reads_size = CountReadBytes(data_reads, arraysize(data_reads));
+  EXPECT_EQ(reads_size, out.total_received_bytes);
 }
 
 // Simulate a 204 response, lacking a Content-Length header, sent over a
 // persistent connection.  The response should still terminate since a 204
 // cannot have a response body.
 TEST_F(HttpNetworkTransactionTest, StopsReading204) {
   char junk[] = "junk";
   MockRead data_reads[] = {
     MockRead("HTTP/1.1 204 No Content\r\n\r\n"),
     MockRead(junk),  // Should not be read!!
@@ skipping 10406 matching lines @@
       never_finishing_connect);
   session_deps_.socket_factory->AddSocketDataProvider(
       &hanging_non_alternate_protocol_socket);
 
   TestCompletionCallback callback;
 
   std::unique_ptr<HttpNetworkSession> session(CreateSession(&session_deps_));
   std::unique_ptr<HttpTransaction> trans(
       new HttpNetworkTransaction(DEFAULT_PRIORITY, session.get()));
 
-  // HTTP/0.9 should fail.
   int rv = trans->Start(&request, callback.callback(), BoundNetLog());
-  EXPECT_THAT(callback.GetResult(rv), IsError(ERR_INVALID_HTTP_RESPONSE));
+  EXPECT_THAT(rv, IsError(ERR_IO_PENDING));
+  EXPECT_THAT(callback.WaitForResult(), IsOk());
+
+  const HttpResponseInfo* response = trans->GetResponseInfo();
+  ASSERT_TRUE(response);
+  ASSERT_TRUE(response->headers);
+  EXPECT_EQ("HTTP/0.9 200 OK", response->headers->GetStatusLine());
+  EXPECT_FALSE(response->was_fetched_via_spdy);
+  EXPECT_TRUE(response->was_npn_negotiated);
+
+  std::string response_data;
+  ASSERT_THAT(ReadTransaction(trans.get(), &response_data), IsOk());
+  EXPECT_EQ("hello world", response_data);
 
   trans.reset(new HttpNetworkTransaction(DEFAULT_PRIORITY, session.get()));
 
   rv = trans->Start(&request, callback.callback(), BoundNetLog());
   EXPECT_THAT(rv, IsError(ERR_IO_PENDING));
   EXPECT_THAT(callback.WaitForResult(), IsOk());
 
-  const HttpResponseInfo* response = trans->GetResponseInfo();
+  response = trans->GetResponseInfo();
   ASSERT_TRUE(response);
   ASSERT_TRUE(response->headers);
   EXPECT_EQ("HTTP/1.1 200", response->headers->GetStatusLine());
   EXPECT_TRUE(response->was_fetched_via_spdy);
   EXPECT_TRUE(response->was_npn_negotiated);
 
-  std::string response_data;
   ASSERT_THAT(ReadTransaction(trans.get(), &response_data), IsOk());
   EXPECT_EQ("hello!", response_data);
   ASSERT_EQ(2u, capturing_proxy_resolver.resolved().size());
   EXPECT_EQ("https://www.example.org/",
             capturing_proxy_resolver.resolved()[0].spec());
   EXPECT_EQ("https://www.example.org/",
             capturing_proxy_resolver.resolved()[1].spec());
 
   LoadTimingInfo load_timing_info;
   EXPECT_TRUE(trans->GetLoadTimingInfo(&load_timing_info));
@@ skipping 4435 matching lines @@
   base::RunLoop().RunUntilIdle();
 
   EXPECT_TRUE(trans.GetResponseInfo()->was_fetched_via_spdy);
   HttpRequestHeaders headers;
   ASSERT_TRUE(trans.GetFullRequestHeaders(&headers));
   EXPECT_TRUE(headers.HasHeader(HttpRequestHeaders::kTokenBinding));
 }
 #endif  // !defined(OS_IOS)
 
 }  // namespace net