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MONGOC_STREAM_READ(3) libmongoc MONGOC_STREAM_READ(3) SYNOPSIS ssize_t mongoc_stream_read (mongoc_stream_t *stream, void *buf, size_t count, size_t min_bytes, int32_t timeout_msec); PARAMETERS • stream: A mongoc_stream_t. • buf: The buffer to read into. • count: The number of bytes to read. • min_bytes: The minimum number of bytes to read, or else indicate failure. • timeout_msec: The number of milliseconds to wait before failure, a timeout of 0 will not block. If negative, use the default timeout. The mongoc_stream_read() function shall perform a read from a mongoc_stream_t. It's modeled on the API and semantics of read(), though the parameters map only loosely. WARNING: The "default timeout" indicated by a negative value is both unspeci- fied and unrelated to the documented default values for *TimeoutMS URI options. To specify a default timeout value for a *TimeoutMS URI option, use the MONGOC_DEFAULT_* constants defined in mon- goc-client.h. RETURNS The mongoc_stream_read() function returns the number of bytes read on success. It returns >= 0 and < min_bytes when end-of-file is encoun- tered and -1 on failure. errno is set upon failure. SEE ALSO: mongoc_stream_readv() mongoc_stream_write() mongoc_stream_writev() AUTHOR MongoDB, Inc COPYRIGHT 2009-present, MongoDB, Inc. 1.30.2 Apr 12, 2025 MONGOC_STREAM_READ(3)
SYNOPSIS | PARAMETERS | RETURNS | AUTHOR | COPYRIGHT
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