| Home | Libraries | People | FAQ | More

##### ip::basic_resolver_query::basic_resolver_query (2 of 4 overloads)

Construct with specified service name for a given protocol.

    basic_resolver_query(
        const protocol_type & protocol,
        const std::string & service_name,
        resolver_query_base::flags resolve_flags = passive|address_configured);

This constructor is typically used to perform name resolution for local service binding with a specific protocol version.

###### Parameters

protocol

  A protocol object, normally representing either the IPv4 or IPv6 version of an internet protocol.

service_name

  A string identifying the requested service. This may be a descriptive name or a numeric string corresponding to a port number.

resolve_flags

  A set of flags that determine how name resolution should be performed. The default flags are suitable for local service binding.

###### Remarks

On POSIX systems, service names are typically defined in the file `/etc/services`. On Windows, service names may be found in the file `c:\windows\system32\drivers\etc\services`. Operating systems may use additional locations when resolving service names.