使用 C++ REST SDK 进行网络编程

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安装 C++ REST SDK

$ brew install cpprestsdk
$ brew install boost
$ brew install libressl

创建工程

打开 Xcode，File / New / Project...
在向导的第1页选 macOS / Command Line Tool
在向导的第2页语言选 C++，Product Name 填上任意名称
在向导的第3页选择任意文件夹，点击 Create 创建工程。

配置工程

将 System Header Search Paths 设置为
/usr/local/Cellar/cpprestsdk/2.10.2/include
/usr/local/Cellar/boost/1.67.0_1/include
/usr/local/Cellar/libressl/2.7.4/include

将 Library Search Paths 设置为
/usr/local/Cellar/cpprestsdk/2.10.2/lib
/usr/local/Cellar/boost/1.67.0_1/lib
/usr/local/Cellar/libressl/2.7.4/lib

将 Other Linker Flags 设置为
-lcpprest -lboost_system -lboost_thread-mt -lboost_chrono-mt -lssl -lcrypto

cpprestsdk: Undefined symbols for architecture x86_64

C++ 代码

#include <cpprest/http_client.h>
#include <cpprest/filestream.h>

using namespace utility;                    // Common utilities like string conversions
using namespace web;                        // Common features like URIs.
using namespace web::http;                  // Common HTTP functionality
using namespace web::http::client;          // HTTP client features
using namespace concurrency::streams;       // Asynchronous streams

int main(int argc, char* argv[])
{
    auto fileStream = std::make_shared<ostream>();

    // Open stream to output file.
    pplx::task<void> requestTask = fstream::open_ostream(U("results.html")).then([=](ostream outFile)
    {
        *fileStream = outFile;

        // Create http_client to send the request.
        http_client client(U("http://www.bing.com/"));

        // Build request URI and start the request.
        uri_builder builder(U("/search"));
        builder.append_query(U("q"), U("cpprestsdk github"));
        return client.request(methods::GET, builder.to_string());
    })

    // Handle response headers arriving.
    .then([=](http_response response)
    {
        printf("Received response status code:%u\n", response.status_code());

        // Write response body into the file.
        return response.body().read_to_end(fileStream->streambuf());
    })

    // Close the file stream.
    .then([=](size_t)
    {
        return fileStream->close();
    });

    // Wait for all the outstanding I/O to complete and handle any exceptions
    try
    {
        requestTask.wait();
    }
    catch (const std::exception &e)
    {
        printf("Error exception:%s\n", e.what());
    }

    return 0;
}

使用 C++ REST SDK 进行网络编程

标签：creat   file   catch   status   into   exception   search   streambuf   ali   

原文地址：https://www.cnblogs.com/zwvista/p/9581434.html