Re: [Boost-users] [program_options] Custom validate for asio endpoints

Subject: Re: [Boost-users] [program_options] Custom validate for asio endpoints
From: Anthony Foglia (AFoglia_at_[hidden])
Date: 2009-10-29 10:20:40

Ryan McConnehey wrote:
> I'm trying to validate an ip address and port that is being passed in 
> through the command line arguments.  I could retrieve the string and do 
> the validation outside program options.  I thought it would be better to 
> use the custom validate function shown in the documentation.  I'm trying 
> to retrieve the information as a boost::asio::ip::udp::endpoint.  Even 
> after creating the validate function the compiler is complaining that 
> there is no user defined function or stream operator.  I've include some 
> code to show what I'm doing.  Any help would be great.
 >
[CommandLine class omitted]
 >
> static void validate(boost::any & v, std::vector<std::string> const& 
> values, boost::asio::ip::udp::endpoint * target_type, int) {
>  CommandLine::validate(v, values);
> }

I've only tried custom validation once, a while ago, but when I did, I 
put the validate function in the same namespace as the target type.  It 
wouldn't surprise me if program options uses ADL and that's actually a 
requirement.  So try putting validate in the boost::asio::ip::udp namespace.

-- 
Anthony Foglia
Princeton Consultants
[phone] x233