mongoc_error_has_label - Man Page

bool
mongoc_error_has_label (const bson_t *reply, const char *label);

Test whether a reply from a failed operation includes a specific error label. See Error Labels <#error-labels> for details, and see mongoc_client_session_start_transaction() <> for example code that demonstrates their use.

• reply: A non-NULL pointer to overwritable storage <https://www.mongodb.com/docs/languages/c/c-driver/current/libbson/guides/lifetimes/#overwritable-storage> for a bson_t <https://www.mongoc.org/libbson/current/bson_t.html> to contain the results.
• label: The label to test for, such as "TransientTransactionError" or "UnknownTransactionCommitResult".

Returns true if reply contains the error label.

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