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-rw-r--r--docs/man/nng_req.7.adoc25
1 files changed, 21 insertions, 4 deletions
diff --git a/docs/man/nng_req.7.adoc b/docs/man/nng_req.7.adoc
index 28765083..1d958562 100644
--- a/docs/man/nng_req.7.adoc
+++ b/docs/man/nng_req.7.adoc
@@ -1,6 +1,6 @@
= nng_req(7)
//
-// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
+// Copyright 2023 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
//
// This document is supplied under the terms of the MIT License, a
@@ -101,9 +101,26 @@ The following protocol-specific option is available.
When a new request is started, a timer of this duration is also started.
If no reply is received before this timer expires, then the request will
be resent.
- (Requests are also automatically resent if the peer to whom
- the original request was sent disconnects, or if a peer becomes available
- while the requester is waiting for an available peer.)
++
+(Requests are also automatically resent if the peer to whom
+the original request was sent disconnects, or if a peer becomes available
+while the requester is waiting for an available peer.)
++
+Resending may be deferred up to the value of the `NNG_OPT_RESENDTICK` parameter.
+
+((`NNG_OPT_REQ_RESENDTICK`))::
+
+ (xref:nng_duration.5.adoc[`nng_duration`])
+ This is the granularity of the clock that is used to check for resending.
+ The default is a second. Setting this to a higher rate will allow for
+ more timely resending to occur, but may incur significant additional
+ overhead when the socket has many outstanding requests (contexts).
++
+When there are no requests outstanding that have a resend set, then
+the clock does not tick at all.
++
+This option is shared for all contexts on a socket, and is only available for the socket itself.
+
=== Protocol Headers