---title:"mg_mgr_init_opt()"decl_name:"mg_mgr_init_opt"symbol_kind:"func"signature:|void mg_mgr_init_opt(struct mg_mgr *mgr, void *user_data,struct mg_mgr_init_opts opts);---Like `mg_mgr_init` but with more options.Notably, this allows you to create a manger and choosedynamically which networking interface implementation to use.