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Hello guys, i'm looking for from about 3 hours a solution for this problem.
How i can connect to my server on dynamic ip without editing l2.ini?
Editing and patching system is the only best way or did You have better solution of this problem? I know - client mods are prohibited on this forum.
Client H5 - server l2j newest.
I've find in web some scripts / program to automatic editing hosts file but of course links are dead.

Any other ideas?

My server dns:
morozaw.dyndns.org

Cheers!

inject connect function to redirect the host. Any socket based app will go througt this function

Could You write a short tutorial what do You mean or give link to smth?
Did You mean shortcut with added comand in line with hostname?

Thank You for reply.
BiggBoss, it is not my level of programming yet.
I thought it is something more simple. Maybe somewhere is a complete app?

JOJO, this script editing host file?
As I conjecture, I must have perl binaries installed in Windows?
Sorry for stupid question - how to run it?
Somewhere i see this code in batch script.Unfortunately, this script is not universal.
Script works only with English version of system. I must edit it every time, when player has other default language in system.

Something else?
I think, this will be helpfull not only for me

perl?

that's simple bat scripting

JOJO's code clearly says "perl -e"...

Guys, maybe somebody would like to help?
Jurchiks, thanks!

I'd rather code some launcher on C#

You need to maintain the connection throughout the game session (we're talking about dynamic IP here), can a launcher do that?

[c] #include <windows.h>#include <winsock2.h>#include <stdlib.h> #pragma comment(lib,"ws2_32.lib"); typedef int (__stdcall* new_connect)(SOCKET socket, sockaddr *name, int namelen);new_connect hook; int __stdcall InjectedConnect(SOCKET socket, sockaddr *name, int namelen) {    sockaddr_in * name_in = (sockaddr_in*)name;    name_in->sin_addr->S_un.S_addr = inet_addr("your.hostname.goes.here");        return hook(socket,name,namelen);} void inject() {    char * alloc_mem = (char*)VirtualAlloc(NULL, 0x1000, MEM_COMMIT, PAGE_EXECUTE_READWRITE);        HMODULE ws2_32 = GetModuleHandle(L"ws2_32.dll");    if(ws2_32 == 0) {        ws2_32 = LoadLibrary(L"ws2_32.dll");    }        char * old_connect_addr = (char*)GetProcAddress(ws2_32, "connect");        if(*old_connect_addr == 0xe9) {        int old_relative = *(int*)(old_connect_addr + 1);        DWORD32 absolute = (DWORD32)(old_connect_addr + old_relative + 5);        *alloc_mem = 0xe9;        *(int*)(alloc_mem + 1) = (int)(absolute - (alloc_mem + 5));    } else {        memcpy(alloc_mem,old_connect_addr,5);        *(alloc_mem + 5)= 0xe9;        *(int*)(alloc_mem + 6) = (int)(old_connect_addr + 5 - (alloc_mem + 10));    }        DWORD prot;    VirtualProtect(old_connect_addr,5,PAGE_EXECUTE_READWRITE, &prot);    *old_connect_addr = 0xe9;    *(int*)(old_connect_addr + 1) = (int)( &InjectedConnect - (old_connect_addr + 5));    VirtualProtect(old_connect_addr,5,prot,&prot);        hook = (new_connect)alloc_mem;} _declspec(dllexport) BOOL APIENTRY DllMain( HMODULE hModule, DWORD  ul_reason_for_call, LPVOID lpReserved) {    if(ul_reason_for_call == DLL_PROCESS_ATTACH || ul_reason_for_call == DLL_THREAD_ATTACH)        inject();    return TRUE;} [/c]

jurchiks wrote:You need to maintain the connection throughout the game session (we're talking about dynamic IP here), can a launcher do that?

Yes why not?

Many many thanks BiggBoss.
I think You should sticky this code for other users if it works

Could You tell me in short how it works and how to compile it?
I must inject this into running program? How to make it automatically?
Sorry, i am newbie in this

UnAfraid, what about the launcher?
Maybe this is good base for that?

Cheers!

compile to a dll. Now, you have 2 ways, attach it to the l2 executable header or create a remote thread in the l2 process, thats all.