A Configuration Guide
[ 30 ]The virtual server section
Any context beginning with the keyword server is considered a "virtual server"
section. It describes a logical separation of a set of resources that will be delivered
under a different server_name directive. These virtual servers respond to HTTP
requests, and so are contained within the http section.
A virtual server is defined by a combination of the listen and server_name
directives. listen defines an IP address/port combination or path to a
UNIX-domain socket:
listen address[:port];
listen port;
listen unix:path;The listen directive uniquely identifies a socket binding under NGINX.
There are also a number of optional parameters that listen can take:
Table: listen parameters
Parameter Explanation Comment
default_server Defines this
address:port
combination as being the
default for the requests
bound here.
setfib Sets the corresponding FIB
for the listening socket.Only supported on FreeBSD.
Not for UNIX-domain
sockets.
backlog Sets the backlog parameter
in the listen() call.Defaults to -1 on FreeBSD
and 511 on all other
platforms.
rcvbuf Sets the SO_RCVBUF
parameter on the listening
socket.
sndbuf Sets the SO_SNDBUF
parameter on the listening
socket.
accept_filter Sets the name of the accept
filter to either dataready
or httpready.Only supported on FreeBSD.