[Boost-users] asio::async_write

Subject: [Boost-users] asio::async_write
From: Lloyd (lloyd_at_[hidden])
Date: 2009-11-18 00:12:36

Hi,

I have been trying very hard to "compile" this code. What is the reason  
for the compilation errors in the "async_write" call.

#include <boost/bind.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/asio.hpp>
using boost::asio::ip::tcp;

class aa
{
public:
        void testme()
        {
                char a[20]="<test data>";
                boost::asio::io_service io;
                tcp::socket s(io);
                boost::asio::async_write(s,boost::asio::buffer(a,sizeof(a)),
                boost::bind(&aa::handler,shared_from_this(),boost::asio::placeholders::error));
        }

        void handler(const boost::system::error_code& error)
        {
        }

private:
        
};

int main()
{
        
        aa x;
        x.testme();
        return 0;
}

The erros I got are:
====================

1>------ Build started: Project: del, Configuration: Release Win32 ------
1>Compiling...
1>del.cpp
1>.\del.cpp(19) : error C2780: 'void  
boost::asio::async_write(AsyncWriteStream  
&,boost::asio::basic_streambuf<Allocator>  
&,CompletionCondition,WriteHandler)' : expects 4 arguments - 3 provided
1>        C:\Program Files\boost140\boost/asio/write.hpp(510) : see  
declaration of 'boost::asio::async_write'
1>.\del.cpp(19) : error C2784: 'void  
boost::asio::async_write(AsyncWriteStream  
&,boost::asio::basic_streambuf<Allocator> &,WriteHandler)' : could not  
deduce template argument for 'boost::asio::basic_streambuf<Allocator> &'  
 from 'boost::asio::mutable_buffers_1'
1>        C:\Program Files\boost140\boost/asio/write.hpp(453) : see  
declaration of 'boost::asio::async_write'
1>.\del.cpp(19) : error C2784: 'void  
boost::asio::async_write(AsyncWriteStream  
&,boost::asio::basic_streambuf<Allocator> &,WriteHandler)' : could not  
deduce template argument for 'boost::asio::basic_streambuf<Allocator> &'  
 from 'boost::asio::mutable_buffers_1'
1>        C:\Program Files\boost140\boost/asio/write.hpp(453) : see  
declaration of 'boost::asio::async_write'
1>.\del.cpp(19) : error C2780: 'void  
boost::asio::async_write(AsyncWriteStream &,const ConstBufferSequence  
&,CompletionCondition,WriteHandler)' : expects 4 arguments - 3 provided
1>        C:\Program Files\boost140\boost/asio/write.hpp(411) : see  
declaration of 'boost::asio::async_write'
1>.\del.cpp(19) : error C3861: 'shared_from_this': identifier not found
1>Build log was saved at "file://c:\Documents and  
Settings\Administrator\Desktop\del\del\Release\BuildLog.htm"
1>del - 5 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

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