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I’m pleased to announce version 1.8.0 of libbson and libmongoc, the libraries constituting the MongoDB C Driver.

libbson

New features and bugfixes:

Make symbols bson_get_major_version, bson_get_minor_version, bson_get_micro_version, bson_get_version, and bson_check_version available to C++ programs.
New CMake option ENABLE_MAINTAINER_FLAGS.
Crash iterating over invalid code with scope.

libmongoc

The zLib and Snappy compression libraries are bundled if not available. Wire protocol compression is enabled on Windows.
mongoc_collection_find_and_modify_with_opts now respects a “writeConcern” field in the “extra” BSON document in its mongoc_find_and_modify_opts_t.
These command functions now ignore “read_prefs”:
mongoc_client_read_write_command_with_opts,
mongoc_database_read_write_command_with_opts
mongoc_collection_read_write_command_with_opts
These functions are both deprecated, use mongoc_database_write_command_with_opts instead. A guide to creating an index using that function has been added.
mongoc_collection_create_index
mongoc_collection_create_index_with_opts
Use select, not WSAPoll, on Windows.
Always mark a server “Unknown” after a network error (besides a timeout).
mongoc_client_pool_t sends platform metadata to the server; before, only a single mongoc_client_t did.
New stream method mongoc_stream_timed_out.
Wire version checks introduced in 1.8.0 will prevent the driver from connecting to a future MongoDB server version if its wire protocol is incompatible.
New CMake option ENABLE_MAINTAINER_FLAGS.