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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. |