| uri | 要向其发送 HTTP HEAD 请求的 URI。 |
UnityWebRequest
经配置可传输 HTTP HEAD 请求的 UnityWebRequest。
创建一个经配置可发送 HTTP HEAD 请求的 UnityWebRequest。
此方法可创建一个 UnityWebRequest，将动词设置为 HEAD，并将目标 URL 设置为字符串参数 /uri/。此方法不设置自定义标志或标头。
此方法不会将 DownloadHandler 或 UploadHandler 附加到 UnityWebRequest。
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