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-rw-r--r--doc/doc-txt/ChangeLog5
-rw-r--r--doc/doc-txt/experimental-spec.txt13
2 files changed, 14 insertions, 4 deletions
diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index d650fc1c0..a199a8d0d 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -104,6 +104,11 @@ GF/01 Bug 1715: Fix for race condition in exicyclog, where exim could attempt
JH/20 Bug 1701: For MySQL lookups, support MySQL config file option group names.
+JH/21 Bug 1720: Add support for priority groups and weighted-random proxy
+ selection for the EXPERIMENTAL_SOCKS feature, via new per-proxy options
+ "pri" and "weight". Note that the previous implicit priority given by the
+ list order is no longer honoured.
+
Exim version 4.86
-----------------
diff --git a/doc/doc-txt/experimental-spec.txt b/doc/doc-txt/experimental-spec.txt
index 74614cd3f..4f9504c05 100644
--- a/doc/doc-txt/experimental-spec.txt
+++ b/doc/doc-txt/experimental-spec.txt
@@ -1135,10 +1135,15 @@ These options are currently defined:
- "pass" sets the authentication password. Default is empty.
- "port" sets the tcp port number for the proxy. Default is 1080.
- "tmo" sets a connection timeout in seconds for this proxy. Default is 5.
-
-Proxies from the list are tried in order until
-one responds. The timeout for the overall connection
-applies to the set of proxied attempts.
+- "pri" specifies a priority for the server within the list, higher
+ values being tried first. The default priority is 1.
+- "weight" specifies a selection bias. Within a priority set servers
+ are queried in a random fashion, weighted by this value. The default
+ value for selection bias is 1.
+
+Proxies from the list are tried according to their priority
+and weight settings until one responds. The timeout for the
+overall connection applies to the set of proxied attempts.
If events are used, the remote IP/port during a
tcp:connect event will be that of the proxy.