DOC: mention that default checks are TCP connections
diff --git a/doc/configuration.txt b/doc/configuration.txt
index 28e7330..0585b89 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -6616,16 +6616,16 @@
check
This option enables health checks on the server. By default, a server is
- always considered available. If "check" is set, the server will receive
- periodic health checks to ensure that it is really able to serve requests.
- The default address and port to send the tests to are those of the server,
- and the default source is the same as the one defined in the backend. It is
- possible to change the address using the "addr" parameter, the port using the
- "port" parameter, the source address using the "source" address, and the
- interval and timers using the "inter", "rise" and "fall" parameters. The
- request method is define in the backend using the "httpchk", "smtpchk",
- "mysql-check", "pgsql-check" and "ssl-hello-chk" options. Please refer to
- those options and parameters for more information.
+ always considered available. If "check" is set, the server is available when
+ accepting periodic TCP connections, to ensure that it is really able to serve
+ requests. The default address and port to send the tests to are those of the
+ server, and the default source is the same as the one defined in the
+ backend. It is possible to change the address using the "addr" parameter, the
+ port using the "port" parameter, the source address using the "source"
+ address, and the interval and timers using the "inter", "rise" and "fall"
+ parameters. The request method is define in the backend using the "httpchk",
+ "smtpchk", "mysql-check", "pgsql-check" and "ssl-hello-chk" options. Please
+ refer to those options and parameters for more information.
Supported in default-server: No