HTTP Response Header and Request Header Information Comparison Table

HTTP request and response headers are metadata used to transfer information between the client and server. The following is a comparison table of HTTP response header and request header information: | Request header information | Response header information | Description | | --- | --- | Host | | Server name or IP address of the request | User Agent | User agent software ID of the requesting user | Reference | URL address of the request page | Accept | | Tell the server the type of data that can be processed | Accept Encoding | Tell the server the supported data compression format | Accept Lang Uage | | Tell the server the supported languages | Connection | Connection | Tell the server whether to close the connection after the request is completed | Cookie | Set Cookie | Cookie information of the client | Authorization | | User authentication information | If Modified Since | | Cache control, Tell the server the time of the last request | Content Type | | Data type of the request body | Content Length | | Data length of the request body | Range | | Breakpoint continuation, request to obtain resources within a specified range | If None Match | ETag | Cache control, tell the server the ETag information of the last request | The above is a comparison table of some common information between HTTP request headers and response headers, Different request and response headers have different roles and meanings. Through this information, servers and clients can communicate more effectively and improve the efficiency of network transmission.