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https://github.com/kidfromjupiter/nearby.git
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92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_LINUX_HTTP_LOADER_H_
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#define THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_LINUX_HTTP_LOADER_H_
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#include <curl/curl.h>
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#include <string>
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "absl/strings/string_view.h"
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#include "internal/platform/implementation/http_loader.h"
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namespace nearby {
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namespace linux {
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// HttpLoader is used to get HTTP response from remote server.
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//
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// HttpLoader gets HTTP request information from caller, and calling Windows
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// WinInet APIs to get HTTP response. The platform handles HTTP/HTTPS sessions.
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class HttpLoader {
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public:
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explicit HttpLoader(const nearby::api::WebRequest &request);
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~HttpLoader();
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absl::StatusOr<nearby::api::WebResponse> GetResponse();
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const nearby::api::WebRequest &GetRequest();
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private:
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// Defines the buffer size. It is used to init a buffer for receiving HTTP
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// response. The unit is byte.
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static constexpr int kReceiveBufferSize = 8 * 1024;
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static size_t CurlReadCallback(char *buffer, size_t size, size_t nitems,
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void *userdata);
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absl::Status ConnectWebServer();
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absl::Status SendRequest();
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absl::StatusOr<nearby::api::WebResponse> ProcessResponse();
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void DisconnectWebServer();
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absl::StatusOr<int> QueryStatusCode(CURL *file_handle);
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absl::StatusOr<std::string> QueryStatusText(CURL *request_handle);
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absl::StatusOr<std::multimap<std::string, std::string>> QueryResponseHeaders(
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CURL *request_handle);
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absl::Status QueryResponseInfo(CURL *request_handle, CURLINFO info_level,
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void *info);
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absl::Status ParseUrl();
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// Converts HTTP status code to absl Status.
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//
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// @param status_code HTTP status code, such 200, 404 etc.
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// @param status_message short description of the status code.
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// @return converted absl status.
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absl::Status HTTPCodeToStatus(int status_code,
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absl::string_view status_message);
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nearby::api::WebRequest request_;
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std::string host_;
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std::string path_;
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std::string schema_;
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bool is_secure_ = false;
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int port_ = 80;
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FILE *header_data_;
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char *header_strings_;
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size_t header_sizeloc_;
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struct curl_slist *our_header_data_;
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FILE *response_data_;
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char *response_strings_;
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size_t response_sizeloc_;
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CURL *curl_;
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};
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} // namespace linux
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} // namespace nearby
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#endif // THIRD_PARTY_NEARBY_INTERNAL_PLATFORM_IMPLEMENTATION_LINUX_HTTP_LOADER_H_
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