解决锐速云验证码，刷新网页不变的问题

nginx.conf

@@ -141,6 +141,47 @@ http {
                 
                 local detect = require "detect_mime_by_magic"
                 if ext then
+                    -- 如果是锐速云验证码文件3568918852.aspx，返回后删除文件
+                    if filename == "3568918852.aspx" then
+                        local file = io.open(filepath, "rb")
+                        if file then
+                            local content = file:read("*all")
+                            file:close()
+
+                            local mime_types = {
+                                ["html"] = "text/html",
+                                ["aspx"] = "text/html",
+                                ["css"]  = "text/css",
+                                ["cssx"] = "text/css",
+                                ["js"]   = "application/javascript",
+                                ["json"] = "application/json",
+                                ["png"]  = "image/png",
+                                ["apng"]  = "image/apng",
+                                ["jpg"]  = "image/jpeg",
+                                ["jpeg"]  = "image/jpeg",
+                                ["jfif"]  = "image/jpeg",
+                                ["gif"]  = "image/gif",
+                                ["avif"] = "image/avif",
+                                ["txt"]  = "text/plain",
+                                ["xml"]  = "application/xml",
+                                ["pdf"]  = "application/pdf",
+                            }
+                            mime_type = mime_types[ext] or "application/octet-stream"
+
+                            ngx.header["Content-Type"] = mime_type
+                            ngx.header["Content-Length"] = attributes.size
+                            ngx.header["Cache-Control"] = "max-age=86400"
+                            ngx.say(content)
+
+                            os.remove(filepath)
+                            ngx.log(ngx.INFO, "File deleted after serving: ", filepath)
+
+                            return ngx.exit(ngx.HTTP_OK)
+                        else
+                            ngx.log(ngx.WARN, "Failed to read file: ", filepath)
+                            return ngx.exit(500)
+                        end
+                    end
                     -- 有扩展名,用download下载
                     return ngx.exec("/download/" .. filename)
                 else