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| author | Nathan Kent <nate@nkent.net> | 2019-09-25 18:46:38 -0400 |
|---|---|---|
| committer | Garrett D'Amore <garrett@damore.org> | 2019-11-03 10:24:47 -0800 |
| commit | 96b7677ddc8e49da045ca770703df065f10db280 (patch) | |
| tree | 1302c0cf0298033bc408b1806a4c2260bb4b74b4 /docs/man | |
| parent | 32d17517b87713e4d584555c35ac48d010243910 (diff) | |
| download | nng-96b7677ddc8e49da045ca770703df065f10db280.tar.gz nng-96b7677ddc8e49da045ca770703df065f10db280.tar.bz2 nng-96b7677ddc8e49da045ca770703df065f10db280.zip | |
Add option for preferring new messages on SUB0
Diffstat (limited to 'docs/man')
| -rw-r--r-- | docs/man/nng_sub.7.adoc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/man/nng_sub.7.adoc b/docs/man/nng_sub.7.adoc index cd9af727..aef1a9e4 100644 --- a/docs/man/nng_sub.7.adoc +++ b/docs/man/nng_sub.7.adoc @@ -73,6 +73,13 @@ TIP: To receive all messages, an empty topic (zero length) can be used. Note that if the topic was not previously subscribed to with `NNG_OPT_SUB_SUBSCRIBE` then an `NNG_ENOENT` error will result. +((`NNG_OPT_SUB_PREFNEW`)):: + + (`bool`) + This read/write option specifies the behavior of the subscriber when the queue is full. + When `true` (the default), the subscriber will make room in the queue by removing the oldest message. + When `false`, the subscriber will reject messages if the message queue does not have room. + === Protocol Headers The _sub_ protocol has no protocol-specific headers. |