---title:"structmg_resolve_async_opts"decl_name:"structmg_resolve_async_opts"symbol_kind:"struct"signature:|struct mg_resolve_async_opts {const char *nameserver;int max_retries; /* defaults to 2 if zero */int timeout; /* in seconds; defaults to 5 if zero */int accept_literal; /* pseudo-resolve literal ipv4 and ipv6 addrs */int only_literal; /* only resolves literal addrs; sync cb invocation */struct mg_connection **dns_conn; /* return DNS connection */};---Options for `mg_resolve_async_opt`.