Adds support for the DHCP portion of the WPAD (proxy auto-discovery) protocol.

net/proxy/proxy_script_fetcher_impl_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/proxy/proxy_script_fetcher_impl.h"
 
 #include <string>
 
 #include "base/file_path.h"
 #include "base/compiler_specific.h"
@@ skipping 84 matching lines @@
   TestServer test_server_;
 };
 
 TEST_F(ProxyScriptFetcherImplTest, FileUrl) {
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   { // Fetch a non-existent file.
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(GetTestFileUrl("does-not-exist"),
-                                   &text, &callback);
+    pac_fetcher.SetURL(GetTestFileUrl("does-not-exist"));
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(ERR_FILE_NOT_FOUND, callback.WaitForResult());
     EXPECT_TRUE(text.empty());
   }
   { // Fetch a file that exists.
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(GetTestFileUrl("pac.txt"),
-                                   &text, &callback);
+    pac_fetcher.SetURL(GetTestFileUrl("pac.txt"));
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-pac.txt-\n"), text);
   }
 }
 
 // Note that all mime types are allowed for PAC file, to be consistent
 // with other browsers.
 TEST_F(ProxyScriptFetcherImplTest, HttpMimeType) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   { // Fetch a PAC with mime type "text/plain"
     GURL url(test_server_.GetURL("files/pac.txt"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-pac.txt-\n"), text);
   }
   { // Fetch a PAC with mime type "text/html"
     GURL url(test_server_.GetURL("files/pac.html"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-pac.html-\n"), text);
   }
   { // Fetch a PAC with mime type "application/x-ns-proxy-autoconfig"
     GURL url(test_server_.GetURL("files/pac.nsproxy"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-pac.nsproxy-\n"), text);
   }
 }
 
 TEST_F(ProxyScriptFetcherImplTest, HttpStatusCode) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   { // Fetch a PAC which gives a 500 -- FAIL
     GURL url(test_server_.GetURL("files/500.pac"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(ERR_PAC_STATUS_NOT_OK, callback.WaitForResult());
     EXPECT_TRUE(text.empty());
   }
   { // Fetch a PAC which gives a 404 -- FAIL
     GURL url(test_server_.GetURL("files/404.pac"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(ERR_PAC_STATUS_NOT_OK, callback.WaitForResult());
     EXPECT_TRUE(text.empty());
   }
 }
 
 TEST_F(ProxyScriptFetcherImplTest, ContentDisposition) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   // Fetch PAC scripts via HTTP with a Content-Disposition header -- should
   // have no effect.
   GURL url(test_server_.GetURL("files/downloadable.pac"));
   string16 text;
   TestCompletionCallback callback;
-  int result = pac_fetcher.Fetch(url, &text, &callback);
+  pac_fetcher.SetURL(url);
+  int result = pac_fetcher.Fetch(&text, &callback);
   EXPECT_EQ(ERR_IO_PENDING, result);
   EXPECT_EQ(OK, callback.WaitForResult());
   EXPECT_EQ(ASCIIToUTF16("-downloadable.pac-\n"), text);
 }
 
 TEST_F(ProxyScriptFetcherImplTest, NoCache) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   // Fetch a PAC script whose HTTP headers make it cacheable for 1 hour.
   GURL url(test_server_.GetURL("files/cacheable_1hr.pac"));
   {
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-cacheable_1hr.pac-\n"), text);
   }
 
   // Now kill the HTTP server.
   ASSERT_TRUE(test_server_.Stop());
 
   // Try to fetch the file again -- if should fail, since the server is not
   // running anymore. (If it were instead being loaded from cache, we would
   // get a success.
   {
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(ERR_CONNECTION_REFUSED, callback.WaitForResult());
   }
 }
 
 TEST_F(ProxyScriptFetcherImplTest, TooLarge) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   // Set the maximum response size to 50 bytes.
   int prev_size = pac_fetcher.SetSizeConstraint(50);
 
   // These two URLs are the same file, but are http:// vs file://
   GURL urls[] = {
     test_server_.GetURL("files/large-pac.nsproxy"),
     GetTestFileUrl("large-pac.nsproxy")
   };
 
   // Try fetching URLs that are 101 bytes large. We should abort the request
   // after 50 bytes have been read, and fail with a too large error.
   for (size_t i = 0; i < arraysize(urls); ++i) {
     const GURL& url = urls[i];
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(ERR_FILE_TOO_BIG, callback.WaitForResult());
     EXPECT_TRUE(text.empty());
   }
 
   // Restore the original size bound.
   pac_fetcher.SetSizeConstraint(prev_size);
 
   { // Make sure we can still fetch regular URLs.
     GURL url(test_server_.GetURL("files/pac.nsproxy"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-pac.nsproxy-\n"), text);
   }
 }
 
 TEST_F(ProxyScriptFetcherImplTest, Hang) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   // Set the timeout period to 0.5 seconds.
   base::TimeDelta prev_timeout = pac_fetcher.SetTimeoutConstraint(
       base::TimeDelta::FromMilliseconds(500));
 
   // Try fetching a URL which takes 1.2 seconds. We should abort the request
   // after 500 ms, and fail with a timeout error.
   { GURL url(test_server_.GetURL("slow/proxy.pac?1.2"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(ERR_TIMED_OUT, callback.WaitForResult());
     EXPECT_TRUE(text.empty());
   }
 
   // Restore the original timeout period.
   pac_fetcher.SetTimeoutConstraint(prev_timeout);
 
   { // Make sure we can still fetch regular URLs.
     GURL url(test_server_.GetURL("files/pac.nsproxy"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("-pac.nsproxy-\n"), text);
   }
 }
 
 // The ProxyScriptFetcher should decode any content-codings
 // (like gzip, bzip, etc.), and apply any charset conversions to yield
 // UTF8.
 TEST_F(ProxyScriptFetcherImplTest, Encodings) {
   ASSERT_TRUE(test_server_.Start());
 
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   // Test a response that is gzip-encoded -- should get inflated.
   {
     GURL url(test_server_.GetURL("files/gzipped_pac"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("This data was gzipped.\n"), text);
   }
 
   // Test a response that was served as UTF-16 (BE). It should
   // be converted to UTF8.
   {
     GURL url(test_server_.GetURL("files/utf16be_pac"));
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_IO_PENDING, result);
     EXPECT_EQ(OK, callback.WaitForResult());
     EXPECT_EQ(ASCIIToUTF16("This was encoded as UTF-16BE.\n"), text);
   }
 }
 
 TEST_F(ProxyScriptFetcherImplTest, DataURLs) {
   scoped_refptr<URLRequestContext> context(new RequestContext);
   ProxyScriptFetcherImpl pac_fetcher(context);
 
   const char kEncodedUrl[] =
       "data:application/x-ns-proxy-autoconfig;base64,ZnVuY3Rpb24gRmluZFByb3h5R"
       "m9yVVJMKHVybCwgaG9zdCkgewogIGlmIChob3N0ID09ICdmb29iYXIuY29tJykKICAgIHJl"
       "dHVybiAnUFJPWFkgYmxhY2tob2xlOjgwJzsKICByZXR1cm4gJ0RJUkVDVCc7Cn0=";
   const char kPacScript[] =
       "function FindProxyForURL(url, host) {\n"
       "  if (host == 'foobar.com')\n"
       "    return 'PROXY blackhole:80';\n"
       "  return 'DIRECT';\n"
       "}";
 
   // Test fetching a "data:"-url containing a base64 encoded PAC script.
   {
     GURL url(kEncodedUrl);
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(OK, result);
     EXPECT_EQ(ASCIIToUTF16(kPacScript), text);
   }
 
   const char kEncodedUrlBroken[] =
       "data:application/x-ns-proxy-autoconfig;base64,ZnVuY3Rpb24gRmluZFByb3h5R";
 
   // Test a broken "data:"-url containing a base64 encoded PAC script.
   {
     GURL url(kEncodedUrlBroken);
     string16 text;
     TestCompletionCallback callback;
-    int result = pac_fetcher.Fetch(url, &text, &callback);
+    pac_fetcher.SetURL(url);
+    int result = pac_fetcher.Fetch(&text, &callback);
     EXPECT_EQ(ERR_FAILED, result);
   }
 }
 
 }  // namespace net