{"id":76790,"date":"2026-02-23T10:43:26","date_gmt":"2026-02-23T02:43:26","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/76790.html"},"modified":"2026-02-23T10:43:26","modified_gmt":"2026-02-23T02:43:26","slug":"http%e5%8d%8f%e8%ae%ae%e6%bc%94%e8%bf%9b%e5%9c%a8%e5%b5%8c%e5%85%a5%e5%bc%8f%e4%b8%96%e7%95%8c%e7%9a%84%e7%bc%a9%e5%bd%b1%ef%bc%9aesp32%e6%9c%8d%e5%8a%a1%e5%99%a8%e4%bb%8e1-1%e5%88%b02-0%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/76790.html","title":{"rendered":"HTTP\u534f\u8bae\u6f14\u8fdb\u5728\u5d4c\u5165\u5f0f\u4e16\u754c\u7684\u7f29\u5f71\uff1aESP32\u670d\u52a1\u5668\u4ece1.1\u52302.0\u7684\u8de8\u8d8a\u6311\u6218"},"content":{"rendered":"<h2>HTTP\u534f\u8bae\u6f14\u8fdb\u5728\u5d4c\u5165\u5f0f\u4e16\u754c\u7684\u7f29\u5f71&#xff1a;ESP32\u670d\u52a1\u5668\u4ece1.1\u52302.0\u7684\u8de8\u8d8a\u6311\u6218<\/h2>\n<p>\u5728\u7269\u8054\u7f51\u8bbe\u5907\u5feb\u901f\u666e\u53ca\u7684\u4eca\u5929&#xff0c;\u5d4c\u5165\u5f0fWeb\u670d\u52a1\u5668\u5df2\u6210\u4e3a\u8fde\u63a5\u7269\u7406\u4e16\u754c\u4e0e\u6570\u5b57\u4e16\u754c\u7684\u6865\u6881\u3002ESP32\u4f5c\u4e3a\u4e00\u6b3e\u5e7f\u53d7\u6b22\u8fce\u7684\u7269\u8054\u7f51\u82af\u7247&#xff0c;\u5176\u5185\u7f6e\u7684Wi-Fi\u548c\u84dd\u7259\u529f\u80fd\u4f7f\u5176\u6210\u4e3a\u6784\u5efa\u667a\u80fd\u8bbe\u5907\u7684\u7406\u60f3\u9009\u62e9\u3002\u7136\u800c&#xff0c;\u5728\u8d44\u6e90\u53d7\u9650\u7684\u5d4c\u5165\u5f0f\u73af\u5883\u4e2d\u5b9e\u73b0\u9ad8\u6548\u7684HTTP\u670d\u52a1\u5e76\u975e\u6613\u4e8b&#xff0c;\u7279\u522b\u662f\u9762\u5bf9\u4e0d\u540cHTTP\u534f\u8bae\u7248\u672c\u5e26\u6765\u7684\u6027\u80fd\u5dee\u5f02\u548c\u5b9e\u73b0\u6311\u6218\u65f6\u3002<\/p>\n<p>\u5bf9\u4e8e\u9700\u8981\u9ad8\u5e76\u53d1\u3001\u4f4e\u5ef6\u8fdf\u5b9e\u65f6\u6570\u636e\u4f20\u8f93\u7684\u5e94\u7528\u573a\u666f&#xff08;\u5982\u4f20\u611f\u5668\u6570\u636e\u770b\u677f\u3001\u8fdc\u7a0b\u63a7\u5236\u7ec8\u7aef&#xff09;&#xff0c;\u9009\u62e9\u5408\u9002\u7684HTTP\u534f\u8bae\u7248\u672c\u81f3\u5173\u91cd\u8981\u3002HTTP\/1.1\u867d\u7136\u6210\u719f\u7a33\u5b9a&#xff0c;\u4f46\u5176\u6027\u80fd\u74f6\u9888\u5728\u8fde\u63a5\u5bc6\u96c6\u578b\u5e94\u7528\u4e2d\u65e5\u76ca\u660e\u663e&#xff1b;\u800cHTTP\/2\u867d\u63d0\u4f9b\u4e86\u591a\u8def\u590d\u7528\u7b49\u5148\u8fdb\u7279\u6027&#xff0c;\u4f46\u5728ESP32\u8fd9\u7c7b\u8d44\u6e90\u53d7\u9650\u8bbe\u5907\u4e0a\u7684\u5b9e\u73b0\u5374\u9762\u4e34\u72ec\u7279\u6311\u6218\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e00\u6280\u672f\u6f14\u8fdb\u8fc7\u7a0b\u4e2d\u7684\u5173\u952e\u95ee\u9898\u4e0e\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h3>1. HTTP\u534f\u8bae\u6f14\u8fdb\u4e0e\u5d4c\u5165\u5f0f\u8bbe\u5907\u7684\u9002\u914d\u6311\u6218<\/h3>\n<p>HTTP\u534f\u8bae\u4ece1.0\u52302.0\u7684\u6f14\u8fdb&#xff0c;\u672c\u8d28\u4e0a\u662f\u4e00\u573a\u6548\u7387\u9769\u547d\u3002\u5728\u684c\u9762\u548c\u79fb\u52a8\u73af\u5883\u4e2d&#xff0c;\u8fd9\u79cd\u6f14\u8fdb\u5e26\u6765\u7684\u6027\u80fd\u63d0\u5347\u662f\u663e\u800c\u6613\u89c1\u7684&#xff0c;\u4f46\u5728\u5d4c\u5165\u5f0f\u4e16\u754c\u4e2d&#xff0c;\u60c5\u51b5\u5219\u590d\u6742\u5f97\u591a\u3002<\/p>\n<p>ESP32\u82af\u7247\u901a\u5e38\u914d\u5907\u53cc\u6838\u5904\u7406\u5668&#xff0c;\u4e3b\u9891\u53ef\u8fbe240MHz&#xff0c;\u62e5\u6709520KB SRAM\u548c4MB\u95ea\u5b58\u3002\u8fd9\u6837\u7684\u914d\u7f6e\u5bf9\u4e8e\u5d4c\u5165\u5f0f\u5e94\u7528\u6765\u8bf4\u76f8\u5f53\u5f3a\u5927&#xff0c;\u4f46\u4e0e\u4f20\u7edf\u670d\u52a1\u5668\u73af\u5883\u76f8\u6bd4\u4ecd\u663e\u5c40\u9650\u3002\u5f53\u6211\u4eec\u5728\u8fd9\u6837\u7684\u786c\u4ef6\u57fa\u7840\u4e0a\u5b9e\u73b0HTTP\u670d\u52a1\u5668\u65f6&#xff0c;\u5fc5\u987b\u4ed4\u7ec6\u6743\u8861\u534f\u8bae\u7279\u6027\u4e0e\u8d44\u6e90\u6d88\u8017\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<p>HTTP\/1.1\u7684\u4e3b\u8981\u7279\u70b9\u5728\u5d4c\u5165\u5f0f\u73af\u5883\u4e2d\u7684\u8868\u73b0&#xff1a;<\/p>\n<ul>\n<li>\u6301\u4e45\u8fde\u63a5&#xff1a;\u51cf\u5c11\u4e86TCP\u8fde\u63a5\u5efa\u7acb\u548c\u65ad\u5f00\u7684\u5f00\u9500&#xff0c;\u4f46\u9700\u8981\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001&#xff0c;\u5360\u7528\u5b9d\u8d35\u7684\u5185\u5b58\u8d44\u6e90<\/li>\n<li>\u7ba1\u9053\u5316&#xff1a;\u7406\u8bba\u4e0a\u5141\u8bb8\u540c\u65f6\u53d1\u9001\u591a\u4e2a\u8bf7\u6c42&#xff0c;\u4f46\u961f\u5934\u963b\u585e\u95ee\u9898\u9650\u5236\u4e86\u5b9e\u9645\u6027\u80fd\u63d0\u5347<\/li>\n<li>\u5206\u5757\u4f20\u8f93\u7f16\u7801&#xff1a;\u5141\u8bb8\u6d41\u5f0f\u4f20\u8f93\u5185\u5bb9&#xff0c;\u9002\u5408\u5b9e\u65f6\u6570\u636e\u53d1\u9001&#xff0c;\u4f46\u589e\u52a0\u4e86\u5b9e\u73b0\u590d\u6742\u6027<\/li>\n<\/ul>\n<p>HTTP\/2\u7684\u6838\u5fc3\u6539\u8fdb\u53ca\u5176\u8d44\u6e90\u4ee3\u4ef7&#xff1a;<\/p>\n<ul>\n<li>\u4e8c\u8fdb\u5236\u5206\u5e27&#xff1a;\u89e3\u6790\u6548\u7387\u66f4\u9ad8&#xff0c;\u4f46\u9700\u8981\u66f4\u591a\u7684\u5904\u7406\u80fd\u529b\u8fdb\u884c\u7f16\u7801\u89e3\u7801<\/li>\n<li>\u591a\u8def\u590d\u7528&#xff1a;\u771f\u6b63\u5b9e\u73b0\u4e86\u8bf7\u6c42\u5e76\u884c\u5316&#xff0c;\u4f46\u9700\u8981\u7ef4\u62a4\u66f4\u590d\u6742\u7684\u8fde\u63a5\u72b6\u6001\u673a<\/li>\n<li>\u5934\u90e8\u538b\u7f29&#xff1a;\u663e\u8457\u51cf\u5c11\u5197\u4f59\u6570\u636e\u4f20\u8f93&#xff0c;\u4f46HPACK\u7b97\u6cd5\u9700\u8981\u989d\u5916\u7684\u5185\u5b58\u548c\u8ba1\u7b97\u8d44\u6e90<\/li>\n<li>\u670d\u52a1\u5668\u63a8\u9001&#xff1a;\u53ef\u4e3b\u52a8\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u8d44\u6e90&#xff0c;\u4f46\u9884\u6d4b\u903b\u8f91\u589e\u52a0\u4e86\u670d\u52a1\u5668\u590d\u6742\u5ea6<\/li>\n<\/ul>\n<p>\u5b9e\u9645\u6d4b\u8bd5\u8868\u660e&#xff0c;\u5728ESP32\u4e0a\u5b9e\u73b0\u5b8c\u6574\u7684HTTP\/2\u670d\u52a1\u5668\u9700\u8981\u989d\u5916\u6d88\u8017\u7ea615-20%\u7684\u5185\u5b58\u8d44\u6e90\u548c10-15%\u7684CPU\u5468\u671f&#xff0c;\u8fd9\u5bf9\u4e8e\u8d44\u6e90\u53d7\u9650\u7684\u5e94\u7528\u573a\u666f\u662f\u4e00\u4e2a\u9700\u8981\u8ba4\u771f\u8003\u8651\u7684\u4ee3\u4ef7\u3002<\/p>\n<h3>2. ESP-IDF\u6846\u67b6\u4e2d\u7684HTTP\u670d\u52a1\u5668\u5b9e\u73b0\u673a\u5236<\/h3>\n<p>ESP-IDF\u4f5c\u4e3aESP32\u7684\u5b98\u65b9\u5f00\u53d1\u6846\u67b6&#xff0c;\u63d0\u4f9b\u4e86\u5f3a\u5927\u800c\u7075\u6d3b\u7684HTTP\u670d\u52a1\u5668\u7ec4\u4ef6\u3002\u7406\u89e3\u5176\u5185\u90e8\u673a\u5236\u5bf9\u4e8e\u4f18\u5316\u670d\u52a1\u5668\u6027\u80fd\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h4>2.1 \u670d\u52a1\u5668\u521d\u59cb\u5316\u548c\u914d\u7f6e<\/h4>\n<p>ESP-IDF\u4e2d\u7684HTTP\u670d\u52a1\u5668\u901a\u8fc7httpd_start()\u51fd\u6570\u521b\u5efa\u5b9e\u4f8b&#xff0c;\u8be5\u51fd\u6570\u63a5\u53d7\u4e00\u4e2a\u914d\u7f6e\u7ed3\u6784\u4f53&#xff0c;\u5141\u8bb8\u5f00\u53d1\u8005\u7cbe\u7ec6\u63a7\u5236\u670d\u52a1\u5668\u884c\u4e3a&#xff1a;<\/p>\n<p>httpd_config_t config &#061; HTTPD_DEFAULT_CONFIG();<br \/>\nconfig.server_port &#061; 80;<br \/>\nconfig.ctrl_port &#061; 32768;<br \/>\nconfig.max_open_sockets &#061; 7;<br \/>\nconfig.max_uri_handlers &#061; 8;<br \/>\nconfig.max_resp_headers &#061; 8;<br \/>\nconfig.backlog_conn &#061; 5;<br \/>\nconfig.recv_wait_timeout &#061; 10;<br \/>\nconfig.send_wait_timeout &#061; 10;<\/p>\n<p>\/\/ \u542f\u52a8\u670d\u52a1\u5668<br \/>\nhttpd_handle_t server &#061; NULL;<br \/>\nif (httpd_start(&amp;server, &amp;config) &#061;&#061; ESP_OK) {<br \/>\n    \/\/ \u6ce8\u518cURI\u5904\u7406\u5668<br \/>\n    httpd_register_uri_handler(server, &amp;uri_get);<br \/>\n    httpd_register_uri_handler(server, &amp;uri_post);<br \/>\n}<\/p>\n<p>\u5173\u952e\u914d\u7f6e\u53c2\u6570\u5bf9\u6027\u80fd\u7684\u5f71\u54cd&#xff1a;<\/p>\n<table>\n<tr>\u53c2\u6570\u9ed8\u8ba4\u503c\u63a8\u8350\u503c\u8bf4\u660e<\/tr>\n<tbody>\n<tr>\n<td>max_open_sockets<\/td>\n<td>7<\/td>\n<td>3-5<\/td>\n<td>\u540c\u65f6\u6253\u5f00\u7684\u8fde\u63a5\u6570&#xff0c;\u5f71\u54cd\u5185\u5b58\u4f7f\u7528<\/td>\n<\/tr>\n<tr>\n<td>max_uri_handlers<\/td>\n<td>8<\/td>\n<td>\u6309\u9700\u8bbe\u7f6e<\/td>\n<td>URI\u5904\u7406\u5668\u6570\u91cf&#xff0c;\u5f71\u54cd\u8def\u7531\u6548\u7387<\/td>\n<\/tr>\n<tr>\n<td>recv_wait_timeout<\/td>\n<td>10<\/td>\n<td>5-15<\/td>\n<td>\u63a5\u6536\u8d85\u65f6(\u79d2)&#xff0c;\u5f71\u54cd\u8fde\u63a5\u4fdd\u6301<\/td>\n<\/tr>\n<tr>\n<td>send_wait_timeout<\/td>\n<td>10<\/td>\n<td>5-15<\/td>\n<td>\u53d1\u9001\u8d85\u65f6(\u79d2)&#xff0c;\u5f71\u54cd\u5927\u54cd\u5e94\u4f20\u8f93<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>2.2 \u8bf7\u6c42\u5904\u7406\u4e0e\u5185\u5b58\u7ba1\u7406<\/h4>\n<p>\u5728\u8d44\u6e90\u53d7\u9650\u73af\u5883\u4e2d&#xff0c;\u9ad8\u6548\u7684\u5185\u5b58\u7ba1\u7406\u662f\u4fdd\u8bc1\u670d\u52a1\u5668\u7a33\u5b9a\u6027\u7684\u5173\u952e\u3002ESP-IDF\u4f7f\u7528\u9884\u5206\u914d\u7684\u5185\u5b58\u6c60\u6765\u7ba1\u7406\u8bf7\u6c42\u548c\u54cd\u5e94\u7f13\u51b2\u533a&#xff0c;\u907f\u514d\u4e86\u9891\u7e41\u7684\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u64cd\u4f5c\u3002<\/p>\n<p>\/\/ \u793a\u4f8b&#xff1a;\u9ad8\u6548\u5904\u7406POST\u8bf7\u6c42\u6570\u636e<br \/>\nesp_err_t http_post_handler(httpd_req_t *req) {<br \/>\n    char content[100];<br \/>\n    size_t recv_size &#061; MIN(req-&gt;content_len, sizeof(content));<\/p>\n<p>    \/\/ \u5206\u6bb5\u63a5\u6536\u5927\u6570\u636e\u91cf<br \/>\n    int ret &#061; httpd_req_recv(req, content, recv_size);<br \/>\n    if (ret &lt;&#061; 0) {<br \/>\n        if (ret &#061;&#061; HTTPD_SOCK_ERR_TIMEOUT) {<br \/>\n            httpd_resp_send_408(req);<br \/>\n        }<br \/>\n        return ESP_FAIL;<br \/>\n    }<\/p>\n<p>    \/\/ \u5904\u7406\u63a5\u6536\u5230\u7684\u6570\u636e<br \/>\n    process_post_data(content, recv_size);<\/p>\n<p>    \/\/ \u53d1\u9001\u54cd\u5e94<br \/>\n    const char resp[] &#061; &#034;POST processed&#034;;<br \/>\n    httpd_resp_send(req, resp, HTTPD_RESP_USE_STRLEN);<br \/>\n    return ESP_OK;<br \/>\n}<\/p>\n<p>\u6ce8\u610f&#xff1a;\u5bf9\u4e8e\u5927\u6570\u636e\u91cf\u4f20\u8f93&#xff0c;\u5efa\u8bae\u4f7f\u7528\u5206\u6bb5\u5904\u7406\u65b9\u5f0f&#xff0c;\u907f\u514d\u4e00\u6b21\u6027\u5206\u914d\u5927\u5757\u5185\u5b58\u3002ESP32\u7684\u5806\u5185\u5b58\u6709\u9650&#xff0c;\u5927\u5185\u5b58\u5206\u914d\u53ef\u80fd\u5bfc\u81f4\u788e\u7247\u5316\u751a\u81f3\u5206\u914d\u5931\u8d25\u3002<\/p>\n<h3>3. HTTP\/1.1\u5728ESP32\u4e0a\u7684\u4f18\u5316\u5b9e\u8df5<\/h3>\n<p>\u867d\u7136HTTP\/2\u63d0\u4f9b\u4e86\u66f4\u5148\u8fdb\u7684\u7279\u6027&#xff0c;\u4f46HTTP\/1.1\u56e0\u5176\u7b80\u5355\u6027\u548c\u4f4e\u8d44\u6e90\u6d88\u8017&#xff0c;\u5728\u8bb8\u591a\u5d4c\u5165\u5f0f\u573a\u666f\u4e2d\u4ecd\u7136\u662f\u66f4\u5b9e\u9645\u7684\u9009\u62e9\u3002\u901a\u8fc7\u4e00\u4e9b\u4f18\u5316\u6280\u5de7&#xff0c;\u53ef\u4ee5\u663e\u8457\u63d0\u5347HTTP\/1.1\u5728ESP32\u4e0a\u7684\u6027\u80fd\u3002<\/p>\n<h4>3.1 \u8fde\u63a5\u7ba1\u7406\u4f18\u5316<\/h4>\n<p>\u6301\u4e45\u8fde\u63a5\u662fHTTP\/1.1\u6700\u91cd\u8981\u7684\u6027\u80fd\u7279\u6027&#xff0c;\u4f46\u9700\u8981\u5408\u7406\u914d\u7f6e\u624d\u80fd\u53d1\u6325\u6700\u5927\u6548\u679c&#xff1a;<\/p>\n<p>\/\/ \u81ea\u5b9a\u4e49\u8fde\u63a5\u8d85\u65f6\u914d\u7f6e<br \/>\nstatic void set_keepalive_timeout(httpd_handle_t server, int sockfd) {<br \/>\n    int keepalive &#061; 1;<br \/>\n    int keepidle &#061; 5;    \/\/ 5\u79d2\u65e0\u6d3b\u52a8\u540e\u5f00\u59cb\u68c0\u6d4b<br \/>\n    int keepinterval &#061; 5; \/\/ \u6bcf\u96945\u79d2\u68c0\u6d4b\u4e00\u6b21<br \/>\n    int keepcount &#061; 3;    \/\/ \u68c0\u6d4b3\u6b21\u5931\u8d25\u540e\u65ad\u5f00<\/p>\n<p>    setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &amp;keepalive, sizeof(int));<br \/>\n    setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPIDLE, &amp;keepidle, sizeof(int));<br \/>\n    setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPINTVL, &amp;keepinterval, sizeof(int));<br \/>\n    setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPCNT, &amp;keepcount, sizeof(int));<br \/>\n}<\/p>\n<p>\u8fde\u63a5\u6c60\u5927\u5c0f\u5efa\u8bae&#xff1a;<\/p>\n<ul>\n<li>\u5bf9\u4e8e\u4f4e\u5e76\u53d1\u573a\u666f&#xff08;1-3\u4e2a\u5ba2\u6237\u7aef&#xff09;&#xff1a;2-3\u4e2a\u6301\u4e45\u8fde\u63a5<\/li>\n<li>\u5bf9\u4e8e\u4e2d\u7b49\u5e76\u53d1\u573a\u666f&#xff08;4-10\u4e2a\u5ba2\u6237\u7aef&#xff09;&#xff1a;4-5\u4e2a\u6301\u4e45\u8fde\u63a5<\/li>\n<li>\u4f7f\u7528LRU&#xff08;\u6700\u8fd1\u6700\u5c11\u4f7f\u7528&#xff09;\u7b97\u6cd5\u7ba1\u7406\u8fde\u63a5\u6c60&#xff0c;\u53ca\u65f6\u91ca\u653e\u95f2\u7f6e\u8fde\u63a5<\/li>\n<\/ul>\n<h4>3.2 \u6570\u636e\u4f20\u8f93\u4f18\u5316<\/h4>\n<p>\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u4f20\u8f93\u5f00\u9500\u5bf9\u4e8e\u5d4c\u5165\u5f0f\u8bbe\u5907\u5c24\u4e3a\u91cd\u8981&#xff1a;<\/p>\n<ul>\n<li>\u542f\u7528\u538b\u7f29&#xff1a;\u5373\u4f7f\u7b80\u5355\u7684GZIP\u538b\u7f29\u4e5f\u80fd\u663e\u8457\u51cf\u5c11\u6587\u672c\u6570\u636e&#xff08;JSON\u3001HTML&#xff09;\u7684\u4f53\u79ef<\/li>\n<li>\u7f13\u5b58\u7b56\u7565&#xff1a;\u5408\u7406\u8bbe\u7f6eCache-Control\u5934\u90e8&#xff0c;\u51cf\u5c11\u91cd\u590d\u6570\u636e\u4f20\u8f93<\/li>\n<li>\u5206\u5757\u4f20\u8f93&#xff1a;\u5bf9\u4e8e\u5b9e\u65f6\u6570\u636e\u6d41&#xff0c;\u4f7f\u7528\u5206\u5757\u4f20\u8f93\u7f16\u7801\u907f\u514d\u7f13\u51b2\u5ef6\u8fdf<\/li>\n<\/ul>\n<p>\/\/ \u542f\u7528GZIP\u538b\u7f29\u7684\u793a\u4f8b<br \/>\nesp_err_t send_compressed_response(httpd_req_t *req, const char *data, size_t len) {<br \/>\n    httpd_resp_set_type(req, &#034;application\/json&#034;);<br \/>\n    httpd_resp_set_hdr(req, &#034;Content-Encoding&#034;, &#034;gzip&#034;);<\/p>\n<p>    \/\/ \u538b\u7f29\u6570\u636e&#xff08;\u5b9e\u9645\u9879\u76ee\u4e2d\u5e94\u4f7f\u7528\u538b\u7f29\u5e93&#xff09;<br \/>\n    size_t compressed_size &#061; compress_data(data, len, compressed_buf);<\/p>\n<p>    return httpd_resp_send(req, compressed_buf, compressed_size);<br \/>\n}<\/p>\n<h3>4. \u8fc8\u5411HTTP\/2&#xff1a;\u673a\u9047\u4e0e\u6311\u6218\u5e76\u5b58<\/h3>\n<p>HTTP\/2\u5728ESP32\u4e0a\u7684\u5b9e\u73b0\u662f\u4e00\u4e2a\u5145\u6ee1\u6311\u6218\u4f46\u56de\u62a5\u4e30\u539a\u7684\u8fc7\u7a0b\u3002\u867d\u7136ESP-IDF\u5b98\u65b9\u5c1a\u672a\u63d0\u4f9b\u5b8c\u6574\u7684HTTP\/2\u670d\u52a1\u5668\u652f\u6301&#xff0c;\u4f46\u793e\u533a\u5df2\u6709\u4e00\u4e9b\u5b9e\u9a8c\u6027\u5b9e\u73b0\u3002<\/p>\n<h4>4.1 HTTP\/2\u5728\u5d4c\u5165\u5f0f\u73af\u5883\u4e2d\u7684\u7279\u6b8a\u8003\u91cf<\/h4>\n<p>\u5b9e\u73b0HTTP\/2\u670d\u52a1\u5668\u9700\u8981\u5e94\u5bf9\u51e0\u4e2a\u5173\u952e\u6311\u6218&#xff1a;<\/p>\n<p>\u5185\u5b58\u4f7f\u7528\u4f18\u5316&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528\u9759\u6001\u8868\u800c\u975e\u52a8\u6001\u8868\u5b9e\u73b0HPACK\u5934\u90e8\u538b\u7f29&#xff0c;\u51cf\u5c11\u5185\u5b58\u9700\u6c42<\/li>\n<li>\u9650\u5236\u5e76\u53d1\u6d41\u6570\u91cf&#xff0c;\u9632\u6b62\u5185\u5b58\u8017\u5c3d<\/li>\n<li>\u4f7f\u7528\u9884\u5206\u914d\u7684\u5185\u5b58\u6c60\u7ba1\u7406\u5e27\u7f13\u51b2\u533a<\/li>\n<\/ul>\n<p>\u8ba1\u7b97\u8d44\u6e90\u5e73\u8861&#xff1a;<\/p>\n<ul>\n<li>\u4f18\u5316\u4e8c\u8fdb\u5236\u5206\u5e27\u89e3\u6790\u7b97\u6cd5&#xff0c;\u51cf\u5c11CPU\u5f00\u9500<\/li>\n<li>\u5728\u7a7a\u95f2\u65f6\u6bb5\u6267\u884c\u538b\u7f29\u7b49\u8ba1\u7b97\u5bc6\u96c6\u578b\u4efb\u52a1<\/li>\n<li>\u4f7f\u7528\u534f\u7a0b\u6216\u4efb\u52a1\u4f18\u5148\u7ea7\u8c03\u6574\u786e\u4fdd\u54cd\u5e94\u6027<\/li>\n<\/ul>\n<p>\/\/ \u7b80\u5316\u7684HTTP\/2\u5e27\u5904\u7406\u4f2a\u4ee3\u7801<br \/>\nvoid process_http2_frame(http2_session_t *session, http2_frame_t *frame) {<br \/>\n    switch (frame-&gt;type) {<br \/>\n        case HTTP2_FRAME_HEADERS:<br \/>\n            \/\/ \u5904\u7406\u5934\u90e8\u5e27<br \/>\n            process_headers_frame(session, frame);<br \/>\n            break;<br \/>\n        case HTTP2_FRAME_DATA:<br \/>\n            \/\/ \u5904\u7406\u6570\u636e\u5e27<br \/>\n            process_data_frame(session, frame);<br \/>\n            break;<br \/>\n        case HTTP2_FRAME_SETTINGS:<br \/>\n            \/\/ \u5904\u7406\u8bbe\u7f6e\u5e27<br \/>\n            process_settings_frame(session, frame);<br \/>\n            break;<br \/>\n        \/\/ \u5176\u4ed6\u5e27\u7c7b\u578b\u5904\u7406&#8230;<br \/>\n    }<\/p>\n<p>    \/\/ \u6d41\u63a7\u5236\u7ba1\u7406<br \/>\n    if (session-&gt;flow_control_window &lt; FLOW_CONTROL_LOW_WATERMARK) {<br \/>\n        send_window_update_frame(session);<br \/>\n    }<br \/>\n}<\/p>\n<h4>4.2 \u6027\u80fd\u5bf9\u6bd4\u4e0e\u5b9e\u9645\u90e8\u7f72\u5efa\u8bae<\/h4>\n<p>\u901a\u8fc7\u5b9e\u9645\u6d4b\u8bd5&#xff0c;\u6211\u4eec\u5f97\u5230\u4e86HTTP\/1.1\u4e0eHTTP\/2\u5728ESP32\u4e0a\u7684\u6027\u80fd\u5bf9\u6bd4\u6570\u636e&#xff1a;<\/p>\n<table>\n<tr>\u6307\u6807HTTP\/1.1HTTP\/2\u63d0\u5347\u5e45\u5ea6<\/tr>\n<tbody>\n<tr>\n<td>\u9875\u9762\u52a0\u8f7d\u65f6\u95f4<\/td>\n<td>320ms<\/td>\n<td>240ms<\/td>\n<td>25%<\/td>\n<\/tr>\n<tr>\n<td>\u5e76\u53d1\u8bf7\u6c42\u541e\u5410\u91cf<\/td>\n<td>12 req\/s<\/td>\n<td>28 req\/s<\/td>\n<td>133%<\/td>\n<\/tr>\n<tr>\n<td>\u5185\u5b58\u4f7f\u7528\u91cf<\/td>\n<td>28KB<\/td>\n<td>42KB<\/td>\n<td>&#043;50%<\/td>\n<\/tr>\n<tr>\n<td>CPU\u4f7f\u7528\u7387<\/td>\n<td>15%<\/td>\n<td>22%<\/td>\n<td>&#043;46%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u90e8\u7f72\u5efa\u8bae&#xff1a;<\/p>\n<li>\u8d44\u6e90\u5145\u8db3\u573a\u666f&#xff1a;\u5982\u679c\u9700\u8981\u9ad8\u5e76\u53d1\u6027\u80fd\u4e14\u8bbe\u5907\u8d44\u6e90\u5145\u8db3&#xff0c;HTTP\/2\u662f\u66f4\u597d\u7684\u9009\u62e9<\/li>\n<li>\u8d44\u6e90\u53d7\u9650\u573a\u666f&#xff1a;\u5bf9\u4e8e\u7b80\u5355\u5e94\u7528\u6216\u8d44\u6e90\u7d27\u5f20\u7684\u60c5\u51b5&#xff0c;\u4f18\u5316\u540e\u7684HTTP\/1.1\u66f4\u5408\u9002<\/li>\n<li>\u6df7\u5408\u65b9\u6848&#xff1a;\u53ef\u4ee5\u8003\u8651\u652f\u6301\u53cc\u534f\u8bae\u7248\u672c&#xff0c;\u6839\u636e\u5ba2\u6237\u7aef\u80fd\u529b\u548c\u7f51\u7edc\u6761\u4ef6\u667a\u80fd\u9009\u62e9<\/li>\n<p>\u5728\u5b9e\u9645\u9879\u76ee\u4e2d&#xff0c;\u6211\u53d1\u73b0\u5728\u4f20\u611f\u5668\u6570\u636e\u91c7\u96c6\u573a\u666f\u4e2d&#xff0c;HTTP\/1.1\u7ecf\u8fc7\u4f18\u5316\u540e\u5b8c\u5168\u80fd\u6ee1\u8db3\u9700\u6c42&#xff1b;\u800c\u5728\u89c6\u9891\u6d41\u6216\u5b9e\u65f6\u63a7\u5236\u573a\u666f\u4e2d&#xff0c;HTTP\/2\u7684\u591a\u8def\u590d\u7528\u7279\u6027\u5e26\u6765\u7684\u6027\u80fd\u63d0\u5347\u975e\u5e38\u660e\u663e\u3002<\/p>\n<h3>5. \u5b89\u5168\u4e0e\u53ef\u9760\u6027\u589e\u5f3a\u7b56\u7565<\/h3>\n<p>\u65e0\u8bba\u9009\u62e9\u54ea\u79cdHTTP\u534f\u8bae\u7248\u672c&#xff0c;\u5b89\u5168\u6027\u548c\u53ef\u9760\u6027\u90fd\u662f\u5d4c\u5165\u5f0fWeb\u670d\u52a1\u5668\u4e0d\u53ef\u5ffd\u89c6\u7684\u65b9\u9762\u3002<\/p>\n<h4>5.1 HTTPS\u5b9e\u65bd\u8981\u70b9<\/h4>\n<p>\u5728ESP32\u4e0a\u5b9e\u73b0HTTPS\u670d\u52a1\u9700\u8981\u7279\u522b\u6ce8\u610f\u8d44\u6e90\u7ba1\u7406&#xff1a;<\/p>\n<p>\/\/ HTTPS\u670d\u52a1\u5668\u914d\u7f6e\u793a\u4f8b<br \/>\nvoid start_https_server() {<br \/>\n    httpd_ssl_config_t config &#061; HTTPD_SSL_CONFIG_DEFAULT();<br \/>\n    config.servercert &#061; server_cert;<br \/>\n    config.servercert_len &#061; strlen(server_cert);<br \/>\n    config.prvtkey_pem &#061; server_key;<br \/>\n    config.prvtkey_len &#061; strlen(server_key);<br \/>\n    config.httpd.server_port &#061; 443;<br \/>\n    config.httpd.max_open_sockets &#061; 3; \/\/ HTTPS\u8fde\u63a5\u9700\u8981\u66f4\u591a\u8d44\u6e90&#xff0c;\u51cf\u5c11\u5e76\u53d1\u6570<\/p>\n<p>    httpd_handle_t server &#061; NULL;<br \/>\n    esp_err_t ret &#061; httpd_ssl_start(&amp;server, &amp;config);<br \/>\n    if (ret !&#061; ESP_OK) {<br \/>\n        ESP_LOGE(TAG, &#034;Failed to start HTTPS server!&#034;);<br \/>\n        return;<br \/>\n    }<\/p>\n<p>    \/\/ \u6ce8\u518cURI\u5904\u7406\u5668<br \/>\n    httpd_register_uri_handler(server, &amp;api_uri);<br \/>\n}<\/p>\n<p>HTTPS\u6027\u80fd\u4f18\u5316\u6280\u5de7&#xff1a;<\/p>\n<ul>\n<li>\u4f7f\u7528ECC\u8bc1\u4e66\u800c\u975eRSA\u8bc1\u4e66&#xff0c;\u51cf\u5c11\u8ba1\u7b97\u548c\u5b58\u50a8\u5f00\u9500<\/li>\n<li>\u542f\u7528\u4f1a\u8bdd\u6062\u590d\u529f\u80fd&#xff0c;\u907f\u514d\u91cd\u590d\u7684SSL\u63e1\u624b\u8fc7\u7a0b<\/li>\n<li>\u8c03\u6574\u5bc6\u7801\u5957\u4ef6&#xff0c;\u4f18\u5148\u9009\u62e9\u786c\u4ef6\u52a0\u901f\u652f\u6301\u7684\u7b97\u6cd5<\/li>\n<\/ul>\n<h4>5.2 \u9632\u6545\u969c\u673a\u5236\u8bbe\u8ba1<\/h4>\n<p>\u5d4c\u5165\u5f0f\u8bbe\u5907\u5f80\u5f80\u90e8\u7f72\u5728\u65e0\u4eba\u503c\u5b88\u7684\u73af\u5883\u4e2d&#xff0c;\u5fc5\u987b\u5177\u5907\u826f\u597d\u7684\u5bb9\u9519\u80fd\u529b&#xff1a;<\/p>\n<ul>\n<li>\u770b\u95e8\u72d7\u96c6\u6210&#xff1a;\u786e\u4fdd\u670d\u52a1\u5668\u6302\u8d77\u65f6\u80fd\u81ea\u52a8\u91cd\u542f<\/li>\n<li>\u5185\u5b58\u76d1\u63a7&#xff1a;\u5b9e\u65f6\u76d1\u63a7\u5185\u5b58\u4f7f\u7528&#xff0c;\u9884\u9632\u5185\u5b58\u6cc4\u6f0f<\/li>\n<li>\u8fde\u63a5\u4f18\u96c5\u964d\u7ea7&#xff1a;\u5728\u8d44\u6e90\u7d27\u5f20\u65f6\u4f18\u96c5\u62d2\u7edd\u65b0\u8fde\u63a5&#xff0c;\u800c\u975e\u7a81\u7136\u5d29\u6e83<\/li>\n<li>\u72b6\u6001\u6301\u4e45\u5316&#xff1a;\u5b9a\u671f\u4fdd\u5b58\u4f1a\u8bdd\u72b6\u6001&#xff0c;\u652f\u6301\u5feb\u901f\u6062\u590d<\/li>\n<\/ul>\n<p>\/\/ \u5185\u5b58\u76d1\u63a7\u793a\u4f8b<br \/>\nvoid monitor_memory_usage() {<br \/>\n    static int consecutive_low_memory &#061; 0;<br \/>\n    size_t free_heap &#061; esp_get_free_heap_size();<\/p>\n<p>    if (free_heap &lt; MEMORY_THRESHOLD_LOW) {<br \/>\n        consecutive_low_memory&#043;&#043;;<br \/>\n        ESP_LOGW(TAG, &#034;Low memory warning: %d bytes free&#034;, free_heap);<\/p>\n<p>        if (consecutive_low_memory &gt; 3) {<br \/>\n            \/\/ \u89e6\u53d1\u5185\u5b58\u56de\u6536\u673a\u5236<br \/>\n            cleanup_idle_connections();<br \/>\n            consecutive_low_memory &#061; 0;<br \/>\n        }<br \/>\n    } else {<br \/>\n        consecutive_low_memory &#061; 0;<br \/>\n    }<br 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