{"id":8198,"date":"2024-03-14T07:41:41","date_gmt":"2024-03-14T07:41:41","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-can-udp-reception-be-combined-in-c\/"},"modified":"2025-08-03T01:47:27","modified_gmt":"2025-08-03T01:47:27","slug":"how-can-udp-reception-be-combined-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-can-udp-reception-be-combined-in-c\/","title":{"rendered":"C++ UDP Reception Guide"},"content":{"rendered":"<p>There are two common ways to implement UDP packet reassembly in C++.<\/p>\n<ol>\n<li>receive data from<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;iostream&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;sys\/types.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;sys\/socket.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;netinet\/in.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;arpa\/inet.h&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;unistd.h&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">define<\/span> PORT 8888<\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">define<\/span> BUF_SIZE 1024<\/span>\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-type\">int<\/span> sockfd;\r\n    <span class=\"hljs-keyword\">struct<\/span> <span class=\"hljs-title class_\">sockaddr_in<\/span> server_addr, client_addr;\r\n    <span class=\"hljs-type\">socklen_t<\/span> addr_len = <span class=\"hljs-built_in\">sizeof<\/span>(<span class=\"hljs-keyword\">struct<\/span> sockaddr_in);\r\n    <span class=\"hljs-type\">char<\/span> buffer[BUF_SIZE];\r\n\r\n    sockfd = <span class=\"hljs-built_in\">socket<\/span>(AF_INET, SOCK_DGRAM, <span class=\"hljs-number\">0<\/span>);\r\n\r\n    server_addr.sin_family = AF_INET;\r\n    server_addr.sin_port = <span class=\"hljs-built_in\">htons<\/span>(PORT);\r\n    server_addr.sin_addr.s_addr = <span class=\"hljs-built_in\">htonl<\/span>(INADDR_ANY);\r\n\r\n    <span class=\"hljs-built_in\">bind<\/span>(sockfd, (<span class=\"hljs-keyword\">struct<\/span> sockaddr*)&amp;server_addr, <span class=\"hljs-built_in\">sizeof<\/span>(<span class=\"hljs-keyword\">struct<\/span> sockaddr_in));\r\n\r\n    <span class=\"hljs-keyword\">while<\/span>(<span class=\"hljs-number\">1<\/span>) {\r\n        <span class=\"hljs-built_in\">recvfrom<\/span>(sockfd, buffer, BUF_SIZE, <span class=\"hljs-number\">0<\/span>, (<span class=\"hljs-keyword\">struct<\/span> sockaddr*)&amp;client_addr, &amp;addr_len);\r\n        <span class=\"hljs-comment\">\/\/ \u5728\u8fd9\u91cc\u8fdb\u884c\u6570\u636e\u5305\u7684\u5408\u5e76\u64cd\u4f5c<\/span>\r\n    }\r\n\r\n    <span class=\"hljs-built_in\">close<\/span>(sockfd);\r\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>increase the efficiency and performance of asio<\/li>\n<li>boost::asio is a library for building network applications in C++.<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;iostream&gt;<\/span><\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">include<\/span> <span class=\"hljs-string\">&lt;boost\/asio.hpp&gt;<\/span><\/span>\r\n\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">define<\/span> PORT 8888<\/span>\r\n<span class=\"hljs-meta\">#<span class=\"hljs-keyword\">define<\/span> BUF_SIZE 1024<\/span>\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    boost::asio::io_service io_service;\r\n    boost::asio::ip::<span class=\"hljs-function\">udp::socket <span class=\"hljs-title\">socket<\/span><span class=\"hljs-params\">(io_service, boost::asio::ip::udp::endpoint(boost::asio::ip::udp::v4(), PORT))<\/span><\/span>;\r\n    boost::asio::ip::udp::endpoint sender_endpoint;\r\n    <span class=\"hljs-type\">char<\/span> buffer[BUF_SIZE];\r\n\r\n    <span class=\"hljs-keyword\">while<\/span> (<span class=\"hljs-literal\">true<\/span>) {\r\n        <span class=\"hljs-type\">size_t<\/span> len = socket.<span class=\"hljs-built_in\">receive_from<\/span>(boost::asio::<span class=\"hljs-built_in\">buffer<\/span>(buffer), sender_endpoint);\r\n        <span class=\"hljs-comment\">\/\/ \u5728\u8fd9\u91cc\u8fdb\u884c\u6570\u636e\u5305\u7684\u5408\u5e76\u64cd\u4f5c<\/span>\r\n    }\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 are two commonly used methods for implementing UDP receive merge in C++, the specific choice depends on the specific requirements and project environment.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are two common ways to implement UDP packet reassembly in C++. receive data from #include &lt;iostream&gt; #include &lt;sys\/types.h&gt; #include &lt;sys\/socket.h&gt; #include &lt;netinet\/in.h&gt; #include &lt;arpa\/inet.h&gt; #include &lt;unistd.h&gt; #define PORT 8888 #define BUF_SIZE 1024 int main() { int sockfd; struct sockaddr_in server_addr, client_addr; socklen_t addr_len = sizeof(struct sockaddr_in); char buffer[BUF_SIZE]; sockfd = socket(AF_INET, SOCK_DGRAM, 0); server_addr.sin_family [&hellip;]<\/p>\n","protected":false},"author":14,"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":[10881,3216,10882,1860,10883],"class_list":["post-8198","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-udp","tag-network-programming","tag-packet-reassembly","tag-socket-programming","tag-udp-protocols"],"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++ UDP Reception Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn UDP packet reassembly techniques in C++ with code examples for efficient network programming.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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