What are the common types of accept encoding
Editor to share with you what are the common types of accept encoding, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!
In Accept-Encoding,HTTPHeader, Accept-Encoding is sent to the server by the browser, declaring the type of encoding supported by the browser.
Accept-Encoding Typ
Accept-Encoding:compress,gzip// supports compress and gzip types
Accept-Encoding:// defaults to identity
Accept-Encoding:*// supports all types of Accept-Encoding:compress;q=0.5,gzip;q=1.0// support gzip,compress sequentially
Accept-Encoding:gzip;q=1.0,identity;q=0.5,*;q=0// supports gzip,identity sequentially
The corresponding type code header returned by the server is content-encoding. The server's rules for handling accept-encoding are as follows: 1. If the server can return any Encoding type defined in Accept-Encoding, the process is successful (unless the value of Q equals 0, which indicates unacceptable)
2.* represents any Encoding type (except for the type defined in Accept-Encoding)
3. If there are multiple Encoding matches at the same time, arrange them in Q-value order
4.identity is always an acceptable encoding type (unless the tag shown is of the type qroom0)
If the value of Accept-Encoding is empty, then only identity is the accepted type
If all types of servers in Accept-Encoding do not send a return, you should return a 406 error to the client
If there is no Accept-Encoding in the request, the server assumes that all Encoding is acceptable.
If there is identity in Accept-Encoding, then identity should be returned first (unless there is a definition of Q value, or you think another type is more meaningful)
What does Accept-Encoding pay attention to?
If the server does not support identity and the browser does not send Accept-Encoding, then the server should tend to use the "gzip" and "compress" in HTTP1.0, and the server may send a more appropriate encoding type according to the client type. Most HTTP1.0 clients cannot handle Q values.
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