Récupérer l'IP du poste

**DSGSLA** · 22/10/2010, 16h47

bonjour,

Je cherche à récupérer l'adresse IP du PC sous Windows sur lequel s'exécute le programme.
J'ai trouvé sur Internet deux codes utilisant boos asio mais je n'arrive pas à les faire fonctionner.

J'utilise Code::Blocks et boost 1.44.

Premier code :

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#include <iostream>
#include "boost\asio.hpp"
 
using namespace std;
 
int main()
{
 
    boost::asio::ip::tcp::socket socket(boost::asio::io_service);
    std::string s = socket.remote_endpoint().address().to_string();
 
    cout << "IP : " << s << endl;
    return 0;
}

A la compilation j'obtiens une flopée de warnings et l'erreur

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main.cpp|10|error: request for member 'remote_endpoint' in 'socket', which is of non-class type 'boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >(boost::asio::io_service)'|

Log complète :

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D:\boost_1_44_0\boost\asio\detail\config.hpp|59|warning: #warning Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately.|
D:\boost_1_44_0\boost\asio\detail\config.hpp|60|warning: #warning For example, add -D_WIN32_WINNT=0x0501 to the compiler command line.|
D:\boost_1_44_0\boost\asio\detail\config.hpp|61|warning: #warning Assuming _WIN32_WINNT=0x0501 (i.e. Windows XP target).|
D:\boost_1_44_0\boost\asio\detail\impl\win_iocp_handle_service.ipp||In constructor 'boost::asio::detail::win_iocp_handle_service::overlapped_wrapper::overlapped_wrapper(boost::system::error_code&)':|
D:\boost_1_44_0\boost\asio\detail\impl\win_iocp_handle_service.ipp|49|warning: dereferencing type-punned pointer will break strict-aliasing rules|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp||In constructor 'boost::asio::ip::address_v6::address_v6()':|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|37|warning: missing braces around initializer for 'in6_addr::<anonymous union>'|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|37|warning: missing braces around initializer for 'u_char [16]'|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|259|warning: missing braces around initializer for 'in6_addr::<anonymous union>'|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|259|warning: missing braces around initializer for 'u_char [16]'|
D:\boost_1_44_0\boost\asio\ip\detail\impl\endpoint.ipp||In constructor 'boost::asio::ip::detail::endpoint::endpoint(int, short unsigned int)':|
D:\boost_1_44_0\boost\asio\ip\detail\impl\endpoint.ipp|60|warning: missing braces around initializer for 'in6_addr::<anonymous union>'|
D:\boost_1_44_0\boost\asio\ip\detail\impl\endpoint.ipp|60|warning: missing braces around initializer for 'u_char [16]'|
H:\main.cpp||In function 'int main()':|
H:\main.cpp|10|error: request for member 'remote_endpoint' in 'socket', which is of non-class type 'boost::asio::basic_stream_socket<boost::asio::ip::tcp, boost::asio::stream_socket_service<boost::asio::ip::tcp> >(boost::asio::io_service)'|
D:\boost_1_44_0\boost\system\error_code.hpp|214|warning: 'boost::system::posix_category' defined but not used|
D:\boost_1_44_0\boost\system\error_code.hpp|215|warning: 'boost::system::errno_ecat' defined but not used|
D:\boost_1_44_0\boost\system\error_code.hpp|216|warning: 'boost::system::native_ecat' defined but not used|
D:\boost_1_44_0\boost\asio\error.hpp|251|warning: 'boost::asio::error::system_category' defined but not used|
D:\boost_1_44_0\boost\asio\error.hpp|253|warning: 'boost::asio::error::netdb_category' defined but not used|
D:\boost_1_44_0\boost\asio\error.hpp|255|warning: 'boost::asio::error::addrinfo_category' defined but not used|
D:\boost_1_44_0\boost\asio\error.hpp|257|warning: 'boost::asio::error::misc_category' defined but not used|
D:\boost_1_44_0\boost\asio\error.hpp|259|warning: 'boost::asio::error::ssl_category' defined but not used|
D:\boost_1_44_0\boost\asio\detail\winsock_init.hpp|78|warning: 'boost::asio::detail::winsock_init_instance' defined but not used|
||=== Build finished: 1 errors, 19 warnings ===|

Deuxième code :

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#include <iostream>
#include "boost\asio.hpp"
 
using namespace std;
 
int main()
{
 
    using boost::asio::ip::tcp;
 
    boost::asio::io_service io_service;
    tcp::resolver resolver(io_service);
    tcp::resolver::query query(boost::asio::ip::host_name(), "");
    tcp::resolver::iterator iter = resolver.resolve(query);
    tcp::resolver::iterator end; // End marker.
    while (iter != end)
    {
        tcp::endpoint ep = *iter++;
        std::cout << ep << std::endl;
    }
 
    return 0;
}

J'obtiens de nombreuses erreurs et cherchant sur Internet j'ai rajouté pour le linker le chemin C:\Windows\system32, mais j'ai quand même ça :

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D:\boost_1_44_0\boost\asio\detail\config.hpp|59|warning: #warning Please define _WIN32_WINNT or _WIN32_WINDOWS appropriately.|
D:\boost_1_44_0\boost\asio\detail\config.hpp|60|warning: #warning For example, add -D_WIN32_WINNT=0x0501 to the compiler command line.|
D:\boost_1_44_0\boost\asio\detail\config.hpp|61|warning: #warning Assuming _WIN32_WINNT=0x0501 (i.e. Windows XP target).|
D:\boost_1_44_0\boost\asio\detail\impl\win_iocp_handle_service.ipp||In constructor 'boost::asio::detail::win_iocp_handle_service::overlapped_wrapper::overlapped_wrapper(boost::system::error_code&)':|
D:\boost_1_44_0\boost\asio\detail\impl\win_iocp_handle_service.ipp|49|warning: dereferencing type-punned pointer will break strict-aliasing rules|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp||In constructor 'boost::asio::ip::address_v6::address_v6()':|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|37|warning: missing braces around initializer for 'in6_addr::<anonymous union>'|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|37|warning: missing braces around initializer for 'u_char [16]'|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|259|warning: missing braces around initializer for 'in6_addr::<anonymous union>'|
D:\boost_1_44_0\boost\asio\ip\impl\address_v6.ipp|259|warning: missing braces around initializer for 'u_char [16]'|
D:\boost_1_44_0\boost\asio\ip\detail\impl\endpoint.ipp||In constructor 'boost::asio::ip::detail::endpoint::endpoint(int, short unsigned int)':|
D:\boost_1_44_0\boost\asio\ip\detail\impl\endpoint.ipp|60|warning: missing braces around initializer for 'in6_addr::<anonymous union>'|
D:\boost_1_44_0\boost\asio\ip\detail\impl\endpoint.ipp|60|warning: missing braces around initializer for 'u_char [16]'|
d:\program files\codeblocks\mingw\bin\..\lib\gcc\mingw32\4.4.1\..\..\..\crt2.o:crt1.c|| undefined reference to `SetUnhandledExceptionFilter@4'|
d:\program files\codeblocks\mingw\bin\..\lib\gcc\mingw32\4.4.1\..\..\..\crt2.o:crt1.c|| undefined reference to `ExitProcess@4'|
d:\program files\codeblocks\mingw\bin\..\lib\gcc\mingw32\4.4.1\crtbegin.o:cygming-crtbegin.c|| undefined reference to `GetModuleHandleA@4'|
d:\program files\codeblocks\mingw\bin\..\lib\gcc\mingw32\4.4.1\crtbegin.o:cygming-crtbegin.c|| undefined reference to `GetProcAddress@8'|
obj\main.o:main.cpp|| undefined reference to `TlsFree@4'|
obj\main.o:main.cpp|| undefined reference to `TlsFree@4'|
obj\main.o:main.cpp|| undefined reference to `InterlockedIncrement@4'|
obj\main.o:main.cpp|| undefined reference to `WSAStartup@8'|
obj\main.o:main.cpp|| undefined reference to `InterlockedExchange@8'|
obj\main.o:main.cpp|| undefined reference to `InterlockedDecrement@4'|
obj\main.o:main.cpp|| undefined reference to `WSASetLastError@4'|
obj\main.o:main.cpp|| undefined reference to `WSAAddressToStringA@20'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `WSAGetLastError@0'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::generic_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::generic_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `WSASetLastError@4'|
obj\main.o:main.cpp|| undefined reference to `gethostname@8'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `WSAGetLastError@0'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `ntohs@4'|
obj\main.o:main.cpp|| undefined reference to `htons@4'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `ntohs@4'|
obj\main.o:main.cpp|| undefined reference to `ntohl@4'|
obj\main.o:main.cpp|| undefined reference to `htonl@4'|
obj\main.o:main.cpp|| undefined reference to `ntohs@4'|
obj\main.o:main.cpp|| undefined reference to `ntohl@4'|
obj\main.o:main.cpp|| undefined reference to `htonl@4'|
obj\main.o:main.cpp|| undefined reference to `htons@4'|
obj\main.o:main.cpp|| undefined reference to `ntohl@4'|
obj\main.o:main.cpp|| undefined reference to `htonl@4'|
obj\main.o:main.cpp|| undefined reference to `ntohs@4'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `WSACleanup@0'|
::~winsock_init()]+0xe)||undefined reference to `InterlockedDecrement@4'|
::~winsock_init()]+0x1e)||undefined reference to `WSACleanup@0'|
))]+0x43)||undefined reference to `EnterCriticalSection@4'|
))]+0xac)||undefined reference to `LeaveCriticalSection@4'|
))]+0xdf)||undefined reference to `LeaveCriticalSection@4'|
))]+0x116)||undefined reference to `EnterCriticalSection@4'|
||More errors follow but not being shown.|
||Edit the max errors limit in compiler options...|
||=== Build finished: 50 errors, 10 warnings ===|

Normalement je ne devrais rien avoir besoin de plus que les headers de boost, et les codes semblent correctes. Je ne comprends d'où viennent les problèmes.
Une idée ?

**Arzar** · 22/10/2010, 17h37

Bonjour,

Pour le premier code, il ne faut pas être impressionné par boost::Asio et ses types à rallonge (genre boost::asio::ip::tcp::socket). Si tu regardes bien, la construction de la variable socket n'a aucun sens, car tu passes un type en paramètre. Ça serait comme écrire:

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boost::asio::ip::tcp::socket socket(int) // erreur, int est un type;
boost::asio::ip::tcp::socket socket(float*); // pareil
boost::asio::ip::tcp::socket socket(std::string); // pareil
boost::asio::ip::tcp::socket socket(boost::asio::io_service); // pareil

Pour le deuxième code, j'ai l'impression que tu as oublié de linker avec les lib qui vont bien. Voir par exemple ce post.

**DSGSLA** · 22/10/2010, 18h05

Dans l'onglet Linker Settings j'ai ajouté libws2_32.a de ..\CodeBlocks\MinGW\lib.
Maintenant j'ai cà :

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obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::generic_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::generic_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| undefined reference to `boost::system::system_category()'|
obj\main.o:main.cpp|| more undefined references to `boost::system::system_category()' follow|
||=== Build finished: 12 errors, 0 warnings ===|

Pour le premier code on trouve sur Internet des bouts de code avec cette construction du socket. Et si l'on ne met que ce code le compilateur accepte.

**zul** · 23/10/2010, 11h25

Il faut linker avec boost_system (et probablement boost_thread aussi).

Récupérer l'IP du poste

Boost C++

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