Type of session affinity to use. The default is NONE. Only NONE and HEADER_FIELD are supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true. For more details, see: Session Affinity.
Constants
UNDEFINED_SESSION_AFFINITY
value: 0
A value indicating that the enum field is not set.
CLIENT_IP
value: 345665051
2-tuple hash on packet's source and destination IP addresses. Connections from the same source IP address to the same destination IP address will be served by the same backend VM while that VM remains healthy.
CLIENT_IP_NO_DESTINATION
value: 106122516
1-tuple hash only on packet's source IP address. Connections from the same source IP address will be served by the same backend VM while that VM remains healthy. This option can only be used for Internal TCP/UDP Load Balancing.
CLIENT_IP_PORT_PROTO
value: 221722926
5-tuple hash on packet's source and destination IP addresses, IP protocol, and source and destination ports. Connections for the same IP protocol from the same source IP address and port to the same destination IP address and port will be served by the same backend VM while that VM remains healthy. This option cannot be used for HTTP(S) load balancing.
CLIENT_IP_PROTO
value: 25322148
3-tuple hash on packet's source and destination IP addresses, and IP protocol. Connections for the same IP protocol from the same source IP address to the same destination IP address will be served by the same backend VM while that VM remains healthy. This option cannot be used for HTTP(S) load balancing.
GENERATED_COOKIE
value: 370321204
Hash based on a cookie generated by the L7 loadbalancer. Only valid for HTTP(S) load balancing.
HEADER_FIELD
value: 200737960
The hash is based on a user specified header field.
HTTP_COOKIE
value: 494981627
The hash is based on a user provided cookie.
NONE
value: 2402104
No session affinity. Connections from the same client IP may go to any instance in the pool.