Project import generated by Copybara.

PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/tools/quic_client_bin.cc b/quic/tools/quic_client_bin.cc
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+// Copyright (c) 2012 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.
+
+// A binary wrapper for QuicClient.
+// Connects to a host using QUIC, sends a request to the provided URL, and
+// displays the response.
+//
+// Some usage examples:
+//
+// Standard request/response:
+//   quic_client www.google.com
+//   quic_client www.google.com --quiet
+//   quic_client www.google.com --port=443
+//
+// Use a specific version:
+//   quic_client www.google.com --quic_version=23
+//
+// Send a POST instead of a GET:
+//   quic_client www.google.com --body="this is a POST body"
+//
+// Append additional headers to the request:
+//   quic_client www.google.com --headers="Header-A: 1234; Header-B: 5678"
+//
+// Connect to a host different to the URL being requested:
+//   quic_client mail.google.com --host=www.google.com
+//
+// Connect to a specific IP:
+//   IP=`dig www.google.com +short | head -1`
+//   quic_client www.google.com --host=${IP}
+//
+// Send repeated requests and change ephemeral port between requests
+//   quic_client www.google.com --num_requests=10
+//
+// Try to connect to a host which does not speak QUIC:
+//   quic_client www.example.com
+
+#include <netdb.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include <iostream>
+#include <memory>
+#include <vector>
+
+#include "net/third_party/quiche/src/quic/core/quic_packets.h"
+#include "net/third_party/quiche/src/quic/core/quic_server_id.h"
+#include "net/third_party/quiche/src/quic/core/quic_utils.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_default_proof_providers.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_socket_address.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_str_cat.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_system_event_loop.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_text_utils.h"
+#include "net/third_party/quiche/src/quic/tools/quic_client.h"
+#include "net/third_party/quiche/src/quic/tools/quic_url.h"
+
+namespace {
+
+using quic::QuicSocketAddress;
+using quic::QuicString;
+using quic::QuicStringPiece;
+using quic::QuicTextUtils;
+using quic::QuicUrl;
+
+class FakeProofVerifier : public quic::ProofVerifier {
+ public:
+  ~FakeProofVerifier() override {}
+  quic::QuicAsyncStatus VerifyProof(
+      const std::string& /*hostname*/,
+      const uint16_t /*port*/,
+      const std::string& /*server_config*/,
+      quic::QuicTransportVersion /*quic_version*/,
+      quic::QuicStringPiece /*chlo_hash*/,
+      const std::vector<std::string>& /*certs*/,
+      const std::string& /*cert_sct*/,
+      const std::string& /*signature*/,
+      const quic::ProofVerifyContext* /*context*/,
+      std::string* /*error_details*/,
+      std::unique_ptr<quic::ProofVerifyDetails>* /*details*/,
+      std::unique_ptr<quic::ProofVerifierCallback> /*callback*/) override {
+    return quic::QUIC_SUCCESS;
+  }
+  quic::QuicAsyncStatus VerifyCertChain(
+      const std::string& /*hostname*/,
+      const std::vector<std::string>& /*certs*/,
+      const quic::ProofVerifyContext* /*context*/,
+      std::string* /*error_details*/,
+      std::unique_ptr<quic::ProofVerifyDetails>* /*details*/,
+      std::unique_ptr<quic::ProofVerifierCallback> /*callback*/) override {
+    return quic::QUIC_SUCCESS;
+  }
+  std::unique_ptr<quic::ProofVerifyContext> CreateDefaultContext() override {
+    return nullptr;
+  }
+};
+
+QuicSocketAddress LookupAddress(QuicString host, QuicString port) {
+  addrinfo hint;
+  memset(&hint, 0, sizeof(hint));
+  hint.ai_protocol = IPPROTO_UDP;
+
+  addrinfo* info_list = nullptr;
+  int result = getaddrinfo(host.c_str(), port.c_str(), &hint, &info_list);
+  if (result != 0) {
+    QUIC_LOG(ERROR) << "Failed to look up " << host << ": "
+                    << gai_strerror(result);
+    return QuicSocketAddress();
+  }
+
+  CHECK(info_list != nullptr);
+  std::unique_ptr<addrinfo, void (*)(addrinfo*)> info_list_owned(info_list,
+                                                                 freeaddrinfo);
+  return QuicSocketAddress(*info_list->ai_addr);
+}
+
+}  // namespace
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    std::string,
+    host,
+    "",
+    "The IP or hostname to connect to. If not provided, the host "
+    "will be derived from the provided URL.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(int32_t, port, 0, "The port to connect to.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(std::string,
+                              body,
+                              "",
+                              "If set, send a POST with this body.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    std::string,
+    body_hex,
+    "",
+    "If set, contents are converted from hex to ascii, before "
+    "sending as body of a POST. e.g. --body_hex=\"68656c6c6f\"");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    std::string,
+    headers,
+    "",
+    "A semicolon separated list of key:value pairs to "
+    "add to request headers.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(bool,
+                              quiet,
+                              false,
+                              "Set to true for a quieter output experience.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    int32_t,
+    quic_version,
+    -1,
+    "QUIC version to speak, e.g. 21. If not set, then all available "
+    "versions are offered in the handshake.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    bool,
+    version_mismatch_ok,
+    false,
+    "If true, a version mismatch in the handshake is not considered a "
+    "failure. Useful for probing a server to determine if it speaks "
+    "any version of QUIC.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    bool,
+    redirect_is_success,
+    true,
+    "If true, an HTTP response code of 3xx is considered to be a "
+    "successful response, otherwise a failure.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(int32_t,
+                              initial_mtu,
+                              0,
+                              "Initial MTU of the connection.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    int32_t,
+    num_requests,
+    1,
+    "How many sequential requests to make on a single connection.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(bool,
+                              disable_certificate_verification,
+                              false,
+                              "If true, don't verify the server certificate.");
+
+DEFINE_QUIC_COMMAND_LINE_FLAG(
+    bool,
+    drop_response_body,
+    false,
+    "If true, drop response body immediately after it is received.");
+
+int main(int argc, char* argv[]) {
+  QuicSystemEventLoop event_loop("quic_client");
+  const char* usage = "Usage: quic_client [options] <url>";
+
+  // All non-flag arguments should be interpreted as URLs to fetch.
+  std::vector<QuicString> urls =
+      quic::QuicParseCommandLineFlags(usage, argc, argv);
+  if (urls.size() != 1) {
+    quic::QuicPrintCommandLineFlagHelp(usage);
+    exit(0);
+  }
+
+  QuicUrl url(urls[0], "https");
+  std::string host = GetQuicFlag(FLAGS_host);
+  if (host.empty()) {
+    host = url.host();
+  }
+  int port = GetQuicFlag(FLAGS_port);
+  if (port == 0) {
+    port = url.port();
+  }
+
+  // Determine IP address to connect to from supplied hostname.
+  QuicSocketAddress addr = LookupAddress(host, quic::QuicStrCat(port));
+  if (!addr.IsInitialized()) {
+    return 1;
+  }
+  std::cerr << "Resolved " << url.ToString() << " to " << addr.ToString()
+            << std::endl;
+
+  // Build the client, and try to connect.
+  quic::QuicEpollServer epoll_server;
+  quic::QuicServerId server_id(url.host(), port, false);
+  quic::ParsedQuicVersionVector versions = quic::CurrentSupportedVersions();
+  if (GetQuicFlag(FLAGS_quic_version) != -1) {
+    versions.clear();
+    versions.push_back(quic::ParsedQuicVersion(
+        quic::PROTOCOL_QUIC_CRYPTO, static_cast<quic::QuicTransportVersion>(
+                                        GetQuicFlag(FLAGS_quic_version))));
+  }
+  const int32_t num_requests(GetQuicFlag(FLAGS_num_requests));
+  std::unique_ptr<quic::ProofVerifier> proof_verifier;
+  if (GetQuicFlag(FLAGS_disable_certificate_verification)) {
+    proof_verifier = quic::QuicMakeUnique<FakeProofVerifier>();
+  } else {
+    proof_verifier = quic::CreateDefaultProofVerifier();
+  }
+  quic::QuicClient client(addr, server_id, versions, &epoll_server,
+                          std::move(proof_verifier));
+  int32_t initial_mtu = GetQuicFlag(FLAGS_initial_mtu);
+  client.set_initial_max_packet_length(
+      initial_mtu != 0 ? initial_mtu : quic::kDefaultMaxPacketSize);
+  client.set_drop_response_body(GetQuicFlag(FLAGS_drop_response_body));
+  if (!client.Initialize()) {
+    std::cerr << "Failed to initialize client." << std::endl;
+    return 1;
+  }
+  if (!client.Connect()) {
+    quic::QuicErrorCode error = client.session()->error();
+    if (error == quic::QUIC_INVALID_VERSION) {
+      std::cerr << "Server talks QUIC, but none of the versions supported by "
+                << "this client: " << ParsedQuicVersionVectorToString(versions)
+                << std::endl;
+      // 0: No error.
+      // 20: Failed to connect due to QUIC_INVALID_VERSION.
+      return GetQuicFlag(FLAGS_version_mismatch_ok) ? 0 : 20;
+    }
+    std::cerr << "Failed to connect to " << addr.ToString()
+              << ". Error: " << quic::QuicErrorCodeToString(error) << std::endl;
+    return 1;
+  }
+  std::cerr << "Connected to " << addr.ToString() << std::endl;
+
+  // Construct the string body from flags, if provided.
+  std::string body = GetQuicFlag(FLAGS_body);
+  if (!GetQuicFlag(FLAGS_body_hex).empty()) {
+    DCHECK(GetQuicFlag(FLAGS_body).empty())
+        << "Only set one of --body and --body_hex.";
+    body = QuicTextUtils::HexDecode(GetQuicFlag(FLAGS_body_hex));
+  }
+
+  // Construct a GET or POST request for supplied URL.
+  spdy::SpdyHeaderBlock header_block;
+  header_block[":method"] = body.empty() ? "GET" : "POST";
+  header_block[":scheme"] = url.scheme();
+  header_block[":authority"] = url.HostPort();
+  header_block[":path"] = url.PathParamsQuery();
+
+  // Append any additional headers supplied on the command line.
+  for (QuicStringPiece sp :
+       QuicTextUtils::Split(GetQuicFlag(FLAGS_headers), ';')) {
+    QuicTextUtils::RemoveLeadingAndTrailingWhitespace(&sp);
+    if (sp.empty()) {
+      continue;
+    }
+    std::vector<QuicStringPiece> kv = QuicTextUtils::Split(sp, ':');
+    QuicTextUtils::RemoveLeadingAndTrailingWhitespace(&kv[0]);
+    QuicTextUtils::RemoveLeadingAndTrailingWhitespace(&kv[1]);
+    header_block[kv[0]] = kv[1];
+  }
+
+  // Make sure to store the response, for later output.
+  client.set_store_response(true);
+
+  for (int i = 0; i < num_requests; ++i) {
+    // Send the request.
+    client.SendRequestAndWaitForResponse(header_block, body, /*fin=*/true);
+
+    // Print request and response details.
+    if (!GetQuicFlag(FLAGS_quiet)) {
+      std::cout << "Request:" << std::endl;
+      std::cout << "headers:" << header_block.DebugString();
+      if (!GetQuicFlag(FLAGS_body_hex).empty()) {
+        // Print the user provided hex, rather than binary body.
+        std::cout << "body:\n"
+                  << QuicTextUtils::HexDump(
+                         QuicTextUtils::HexDecode(GetQuicFlag(FLAGS_body_hex)))
+                  << std::endl;
+      } else {
+        std::cout << "body: " << body << std::endl;
+      }
+      std::cout << std::endl;
+
+      if (!client.preliminary_response_headers().empty()) {
+        std::cout << "Preliminary response headers: "
+                  << client.preliminary_response_headers() << std::endl;
+        std::cout << std::endl;
+      }
+
+      std::cout << "Response:" << std::endl;
+      std::cout << "headers: " << client.latest_response_headers() << std::endl;
+      std::string response_body = client.latest_response_body();
+      if (!GetQuicFlag(FLAGS_body_hex).empty()) {
+        // Assume response is binary data.
+        std::cout << "body:\n"
+                  << QuicTextUtils::HexDump(response_body) << std::endl;
+      } else {
+        std::cout << "body: " << response_body << std::endl;
+      }
+      std::cout << "trailers: " << client.latest_response_trailers()
+                << std::endl;
+    }
+
+    if (!client.connected()) {
+      std::cerr << "Request caused connection failure. Error: "
+                << quic::QuicErrorCodeToString(client.session()->error())
+                << std::endl;
+      return 1;
+    }
+
+    size_t response_code = client.latest_response_code();
+    if (response_code >= 200 && response_code < 300) {
+      std::cerr << "Request succeeded (" << response_code << ")." << std::endl;
+    } else if (response_code >= 300 && response_code < 400) {
+      if (GetQuicFlag(FLAGS_redirect_is_success)) {
+        std::cerr << "Request succeeded (redirect " << response_code << ")."
+                  << std::endl;
+      } else {
+        std::cerr << "Request failed (redirect " << response_code << ")."
+                  << std::endl;
+        return 1;
+      }
+    } else {
+      std::cerr << "Request failed (" << response_code << ")." << std::endl;
+      return 1;
+    }
+
+    // Change the ephemeral port if there are more requests to do.
+    if (i + 1 < num_requests) {
+      if (!client.ChangeEphemeralPort()) {
+        std::cerr << "Failed to change ephemeral port." << std::endl;
+        return 1;
+      }
+    }
+  }
+
+  return 0;
+}