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| author | Dimitri Staessens <dimitri.staessens@ugent.be> | 2018-03-12 17:27:10 +0100 |
|---|---|---|
| committer | Sander Vrijders <sander.vrijders@ugent.be> | 2018-03-12 18:39:15 +0100 |
| commit | e03dedf0a4c40ceeb063f95777bc99628a980ec9 (patch) | |
| tree | a886fea671133bd678524b4430a0ada94f63785e /doc/man/flow_read.3 | |
| parent | 9bf0d277416c342a8a9e0b2017b2b10f1d093245 (diff) | |
| download | ouroboros-e03dedf0a4c40ceeb063f95777bc99628a980ec9.tar.gz ouroboros-e03dedf0a4c40ceeb063f95777bc99628a980ec9.zip | |
lib: Allow partial read
This implements partial read of packets if the buffer supplied to
flow_read() is smaller than the packet in the buffer. If the number of
bytes returned by flow_read equals the size of the buffer, the next
read() will deliver the next bytes of the packet (or 0 if the packet
was exactly the size of the buffer on the previous read).
Implements #7.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
Diffstat (limited to 'doc/man/flow_read.3')
| -rw-r--r-- | doc/man/flow_read.3 | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/man/flow_read.3 b/doc/man/flow_read.3 index 96f76766..0110d0a2 100644 --- a/doc/man/flow_read.3 +++ b/doc/man/flow_read.3 @@ -30,7 +30,11 @@ from the supplied buffer \fIbuf\fR to the flow specified by \fIfd\fR. .SH RETURN VALUE On success, \fBflow_read\fR() returns the number of bytes read. On -failure, a negative value indicating the error will be returned. +failure, a negative value indicating the error will be returned. If +the number of bytes read equals count, a subsequent call to +\fBflow_read\fR() should be performed to check if there were more +bytes to read. This call to \fBflow_read\fR will return 0 if there +was no more data and mark the end of the datagram. On success, \fBflow_write\fR() returns 0. On failure, a negative value indicating the error will be returned. Passing a NULL pointer for |