Fields in real-time logs - CDN - Alibaba Cloud Documentation Center

This topic describes the fields in real-time logs. After you enable the service, you can refer to the descriptions of each field in the following table.

Usage notes

Some Internet service providers (ISPs) may assign private IP addresses to clients in specific regions, causing CDN nodes to receive private IP addresses from users.

Note

Real-time log delivery does not currently have an Origin field. You can use the concatenated values of refer_protocol and refer_domain as a substitute for Origin.
Private IP address ranges include the following three:
- Class A private IP addresses: 10.0.0.0 to 10.255.255.255, subnet mask: 10.0.0.0/8
- Class B private IP addresses: 172.16.0.0 to 172.31.255.255, subnet mask: 172.16.0.0/12
- Class C private IP addresses: 192.168.0.0 to 192.168.255.255, subnet mask: 192.168.0.0/16

No.	Field	Description	Indexed by default
1	unixtime	The end time of the request.	No
2	domain	The domain name to which the request was sent.	Yes
3	method	The request method.	Yes
4	scheme	The protocol over which the request was sent.	Yes
5	uri	The requested resource.	Yes
6	uri_param	The request parameters.	Yes
7	client_ip	The originating IP address of the client. The originating IP address is the first IP address in the `X-Forwarded-For` request header that is carried in the request, which is client_ip. If the client does not use a proxy to connect to the CDN node, the IP address is the same as the one used by the client to establish a connection with the CDN node. Note: The format of the `X-Forwarded-For` request header is `X-Forwarded-For: <client_ip>, <proxy_ip>`.	Yes
8	proxy_ip	The proxy IP address. The proxy IP address is the second IP address in the `X-Forwarded-For` request header that is carried in the request, which is proxy_ip. If the client does not use a proxy to connect to the CDN node, the value of this field is `-`.	No
9	remote_ip	The IP address that is connected to the CDN node.	Yes
10	remote_port	The client port that is connected to the CDN node.	No
11	refer_protocol	The protocol in the HTTP Referer header.	No
12	refer_domain	The domain name in the HTTP Referer header.	Yes
13	refer_uri	The URI in the HTTP Referer header.	Yes
14	refer_param	The parameters in the HTTP Referer header.	No
15	request_size	The size of the request.	Yes
16	request_time	The response time. Unit: milliseconds.	Yes
17	response_size	The size of the response. Unit: bytes.	Yes
18	return_code	The HTTP status code that was returned.	Yes
19	sent_http_content_range	The value of the Range field in the response header. The Range value is specified by the origin server. Example: bytes=0-99/200.	No
20	server_addr	The IP address of the CDN node that served the request.	No
21	server_port	The port number of the CDN node that served the request.	No
22	body_bytes_sent	The size of the request body. Unit: bytes.	No
23	content_type	The type of the requested resource.	Yes
24	hit_info	The cache hit result, excluding requests for live streaming resources or dynamic content. Valid values: HIT and MISS. A value of HIT specifies a cache hit. A value of MISS specifies a cache miss.	Yes
25	http_range	The value of the Range field in the request header. Example: bytes=0-100.	No
26	user_agent	The information about the user agent.	Yes
27	uuid	The unique ID of the request (traceid).	Yes
28	via_info	The information about the Via header, which records the names of proxy servers or gateways that the request passed through.	No
29	xforwordfor	The X-Forwarded-For header in the request.	Yes