Provided by: libmongoc-doc_1.3.1-1_all 

NAME
mongoc_client_set_read_prefs() - None
SYNOPSIS
void
mongoc_client_set_read_prefs (mongoc_client_t *client,
const mongoc_read_prefs_t *read_prefs);
Sets the default read preferences to use with future operations upon client \&.
The global default is to read from the replica set primary.
It is a programming error to call this function on a client from a mongoc_client_pool_t \&. For pooled
clients, set the read preferences with the MongoDB URI instead.
Please see the MongoDB website for a description of Read Preferences \&.
PARAMETERS
client A mongoc_client_t \&.
read_prefs
A mongoc_read_prefs_t \&.
COLOPHON
This page is part of MongoDB C Driver. Please report any bugs at
https://jira.mongodb.org/browse/CDRIVER.
MongoDB C Driver 2016‐01‐18 MONGOC_CLIENT_SET_READ_PREFS(3)