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.TH "MONGOC_CLIENT_SELECT_SERVER" "3" "May 07, 2024" "1.27.1" "libmongoc"
.SH SYNOPSIS
.INDENT 0.0
.INDENT 3.5
.sp
.EX
mongoc_server_description_t *
mongoc_client_select_server (mongoc_client_t *client,
                             bool for_writes,
                             const mongoc_read_prefs_t *prefs,
                             bson_error_t *error) BSON_GNUC_WARN_UNUSED_RESULT;
.EE
.UNINDENT
.UNINDENT
.sp
Choose a server for an operation, according to the logic described in the Server Selection Spec.
.sp
Use this function only for building a language driver that wraps the C Driver. When writing applications in C, higher\-level functions automatically select a suitable server.
.SH PARAMETERS
.INDENT 0.0
.IP \(bu 2
\fBclient\fP: A \fI\%mongoc_client_t\fP\&.
.IP \(bu 2
\fBfor_writes\fP: Whether to choose a server suitable for writes or reads.
.IP \(bu 2
\fBprefs\fP: An optional \fI\%mongoc_read_prefs_t\fP\&. If \fBfor_writes\fP is true, \fBprefs\fP must be NULL. Otherwise, use \fBprefs\fP to customize server selection, or pass NULL to use read preference PRIMARY.
.IP \(bu 2
\fBerror\fP: An optional location for a \fI\%bson_error_t\fP or \fBNULL\fP\&.
.UNINDENT
.SH RETURNS
.sp
A \fI\%mongoc_server_description_t\fP that must be freed with \fI\%mongoc_server_description_destroy()\fP\&. If no suitable server is found, returns NULL and \fBerror\fP is filled out.
.SH AUTHOR
MongoDB, Inc
.SH COPYRIGHT
2017-present, MongoDB, Inc
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