Provided by: libmongoc-doc_1.9.2+dfsg-1build1_all 

NAME
mongoc_stream_writev - mongoc_stream_writev()
SYNOPSIS
ssize_t
mongoc_stream_writev (mongoc_stream_t *stream,
mongoc_iovec_t *iov,
size_t iovcnt,
int32_t timeout_msec);
PARAMETERS
• stream: A mongoc_stream_t.
• iov: A vector of mongoc_iovec_t.
• iovcnt: The number of items in iov.
• timeout_msec: The number of milliseconds to block before indicating failure, or 0 for non-blocking.
Negative values indicate the default timeout.
The mongoc_stream_writev() function shall perform a write to a mongoc_stream_t. It's modeled on the API
and semantics of writev(), though the parameters map only loosely.
RETURNS
The number of bytes written on success, or -1 upon failure and errno is set.
AUTHOR
MongoDB, Inc
COPYRIGHT
2018, MongoDB, Inc
1.9.3-dev Feb 05, 2018 MONGOC_STREAM_WRITEV(3)