{"id":12174,"date":"2024-03-14T15:17:49","date_gmt":"2024-03-14T15:17:49","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-receive-and-send-http-requests-in-c\/"},"modified":"2025-08-04T22:19:02","modified_gmt":"2025-08-04T22:19:02","slug":"how-to-receive-and-send-http-requests-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-receive-and-send-http-requests-in-c\/","title":{"rendered":"C++ HTTP Requests: Send &#038; Receive Guide"},"content":{"rendered":"<p>In C++, third-party libraries like curlcpp and cpprestsdk can be used to send and receive HTTP requests. Here is an example code using the cpprestsdk library to send an HTTP GET request.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;cpprest\/http_client.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;cpprest\/filestream.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-keyword\">using<\/span> <span class=\"hljs-keyword\">namespace<\/span> web;\r\n<span class=\"hljs-keyword\">using<\/span> <span class=\"hljs-keyword\">namespace<\/span> web::http;\r\n<span class=\"hljs-keyword\">using<\/span> <span class=\"hljs-keyword\">namespace<\/span> web::http::client;\r\n\r\n<span class=\"hljs-function\"><span class=\"hljs-type\">int<\/span> <span class=\"hljs-title\">main<\/span><span class=\"hljs-params\">()<\/span> <\/span>{\r\n    <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u4e00\u4e2ahttp_client\u5bf9\u8c61<\/span>\r\n    <span class=\"hljs-function\">http_client <span class=\"hljs-title\">client<\/span><span class=\"hljs-params\">(U(<span class=\"hljs-string\">\"http:\/\/www.example.com\"<\/span>))<\/span><\/span>;\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u53d1\u9001\u4e00\u4e2aGET\u8bf7\u6c42<\/span>\r\n    client.<span class=\"hljs-built_in\">request<\/span>(methods::GET).<span class=\"hljs-built_in\">then<\/span>([](http_response response) {\r\n        <span class=\"hljs-keyword\">if<\/span> (response.<span class=\"hljs-built_in\">status_code<\/span>() == status_codes::OK) {\r\n            <span class=\"hljs-comment\">\/\/ \u5c06\u54cd\u5e94\u6d88\u606f\u4e3b\u4f53\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d<\/span>\r\n            concurrency::streams::ofstream::<span class=\"hljs-built_in\">open_ostream<\/span>(<span class=\"hljs-built_in\">U<\/span>(<span class=\"hljs-string\">\"response.txt\"<\/span>)).<span class=\"hljs-built_in\">then<\/span>([=](concurrency::streams::ostream output) {\r\n                <span class=\"hljs-keyword\">return<\/span> response.<span class=\"hljs-built_in\">body<\/span>().<span class=\"hljs-built_in\">read_to_end<\/span>(output.<span class=\"hljs-built_in\">streambuf<\/span>());\r\n            }).<span class=\"hljs-built_in\">then<\/span>([=](<span class=\"hljs-type\">size_t<\/span>) {\r\n                <span class=\"hljs-comment\">\/\/ \u8bfb\u53d6\u5b8c\u6210<\/span>\r\n                std::wcout &lt;&lt; <span class=\"hljs-string\">L\"File saved\"<\/span> &lt;&lt; std::endl;\r\n            }).<span class=\"hljs-built_in\">wait<\/span>();\r\n        }\r\n    }).<span class=\"hljs-built_in\">wait<\/span>();\r\n\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>The above code uses the cpprestsdk library to send an HTTP GET request to http:\/\/www.example.com and saves the response message body to a file named response.txt. You can modify the code as needed to send different types of HTTP requests and handle responses.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C++, third-party libraries like curlcpp and cpprestsdk can be used to send and receive HTTP requests. Here is an example code using the cpprestsdk library to send an HTTP GET request. #include &lt;cpprest\/http_client.h&gt; #include &lt;cpprest\/filestream.h&gt; using namespace web; using namespace web::http; using namespace web::http::client; int main() { \/\/ \u521b\u5efa\u4e00\u4e2ahttp_client\u5bf9\u8c61 http_client client(U(&#8220;http:\/\/www.example.com&#8221;)); \/\/ \u53d1\u9001\u4e00\u4e2aGET\u8bf7\u6c42 client.request(methods::GET).then([](http_response [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[274,15894,15895,846,3390],"class_list":["post-12174","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c","tag-cpprestsdk","tag-curlcpp","tag-http-requests","tag-networking"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C++ HTTP Requests: Send &amp; 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