HTTP 请求
功能概述
使用 BSD socket 发起一个非常简单的 HTTP 请求。
环境要求
需要有一个能正常连接的 AP。
在 menuconfig 中配置 WiFi SSID 和 WiFi Password。
编译和烧录
示例位置：examples/network/http_request
编译、烧录等操作请参考：快速入门
运行结果
成功运行将输出如下日志
I/wm_nm_core [4.246] got ip: 192.168.3.208
D/wm_nm_core [4.250] WM_NM_EV post event 4 success
I/example [4.754] wifi station start success, network is ready!
I/example [4.782] DNS lookup succeeded. IP=93.184.215.14
I/example [4.788] ... allocated socket
I/example [5.004] ... connected
I/example [5.010] ... socket send success
I/example [5.014] ... set socket receiving timeout success
HTTP/1.0 200 OK
Accept-Ranges: bytes
Age: 207267
Cache-Control: max-age=604800
Content-Type: text/html; charset=UTF-8
Date: Sun, 16 Jun 2024 04:16:27 GMT
Etag: "3147526947+gzip"
Expires: Sun, 23 Jun 2024 04:16:27 GMT
Last-Modified: Thu, 17 Oct 2019 07:18:26 GMT
Server: ECAcc (sac/2525)
Vary: Accept-Encoding
X-Cache: HIT
Content-Length: 1256
Connection: close
<!doctype html>
<html>
<head>
<title>Example Domain</title>
<meta charset="utf-8" />
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<style type="text/css">
body {
background-color: #f0f0f2;
margin: 0;
padding: 0;
font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
}
div {
width: 600px;
margin: 5em auto;
padding: 2em;
background-color: #fdfdff;
border-radius: 0.5em;
box-shadow: 2px 3px 7px 2px rgba(0,0,0,0.02);
}
a:link, a:visited {
color: #38488f;
text-decoration: none;
}
@media (max-width: 700px) {
div {
margin: 0 auto;
width: auto;
}
}
</style>
</head>
<body>
<div>
<h1>Example Domain</h1>
<p>This domain is for use in illustrative examples in documents. You may use this
domain in literature without prior coordination or asking for permission.</p>
<p><a href="https://www.iana.org/domains/example">More information...</a></p>
</div>
</body>
</html>
I/example [7.320] ... done reading from socket. Last read return=0 errno=128.
I/example [7.332] 10...
I/example [8.332] 9...
I/example [9.336] 8...
I/example [10.336] 7...
I/example [11.338] 6...
I/example [12.340] 5...
I/example [13.342] 4...
I/example [14.344] 3...
I/example [15.348] 2...
I/example [16.350] 1...
I/example [17.352] 0...
I/example [18.354] Starting again!