Here is a list of all struct and union fields with links to the structures/unions they belong to:

- u -

• unannounced_incoming_window : grpc_chttp2_stream_global
• unicode_char : grpc_json_reader
• unicode_high_surrogate : grpc_json_reader
• unprotect : tsi_frame_protector_vtable
• unprotect_frame : tsi_fake_frame_protector
• unref : gpr_slice_refcount , grpc_connector_vtable , grpc_resolver_factory_vtable , grpc_subchannel_factory_vtable
• unregistered_request_matcher : grpc_server
• unused : call_data , channel_data , connected_channel_call_data , grpc_pollset_set
• upper : census_op_id
• url_scheme : grpc_security_connector
• user_agent : call_data , channel_data
• user_cb : verifier_cb_ctx
• user_data : completed_request , grpc_composite_credentials_metadata_context , grpc_credentials_metadata_request , grpc_ioreq_data , grpc_secure_transport_setup , internal_metadata , internal_request , new_slice_refcount , new_with_len_slice_refcount , reqinfo_master , verifier_cb_ctx
• user_destroy : new_slice_refcount , new_with_len_slice_refcount
• user_length : new_with_len_slice_refcount
• userdata : grpc_json_reader , grpc_json_writer