#include <windows.h>
#include
void abc(char *p)
{
FILE *fp=fopen("z.txt","a+");
fprintf(fp,"%s\n",p);
fclose(fp);
}
WNDCLASS a; HWND b; MSG c; char aa[200]; SOCKET s; struct hostent h;
WSADATA ws; DWORD e; int ii,dw; char bb[100]; struct sockaddr_in Sa;
long _stdcall zzz (HWND,UINT,WPARAM,LPARAM);
int _stdcall WinMain(HINSTANCE i,HINSTANCE j,char *k,int l)
{
a.lpszClassName="a1";
a.hInstance=i;
a.lpfnWndProc=zzz;
a.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
RegisterClass(&a);
b=CreateWindow("a1","time client",WS_OVERLAPPEDWINDOW,1,1,10,20,0,0,i,0);
ShowWindow(b,3);
while ( GetMessage(&c,0,0,0) )
DispatchMessage(&c);
return 1;
}
long _stdcall zzz (HWND w,UINT x,WPARAM y,LPARAM z)
{
if ( x == WM_LBUTTONDOWN)
{
e=WSAStartup(0x0101,&ws);
sprintf(aa,"e = %ld",e);
abc(aa);
s = socket(PF_INET,SOCK_DGRAM,0);
sprintf(aa,"s = %ld",s);
abc(aa);
Sa.sin_family=AF_INET;
Sa.sin_addr.s_addr = inet_addr("127.0.0.1");
Sa.sin_port=htons(13);
strcpy (bb,"hello how are you");
e=sendto(s,bb,100,0,(struct sockaddr *)&Sa,sizeof(Sa));
sprintf(aa,"SendTo %ld",e);
int dw = sizeof(Sa);
recvfrom(s,bb,100,0,(sockaddr *)&Sa,&dw);
MessageBox(0,bb,"data from server",0);
MessageBox(0,"end","end",0);
}
if ( x == WM_DESTROY)
PostQuitMessage(0);
return DefWindowProc(w,x,y,z);
} Stating up
Author
Hello ppl....
I''m a complete nweby of networking and I''m trying to undertand how to do multiplayer....
The code is trying to send a message to itself (127.0.0.1) and then receive it. The problem is, the socket needs to be bound to a specific port before receiving anything. To fix this, insert this anywhere in your code before the recvfrom():
SOCKADDR_IN addrBind;
addrBind.sin_family = AF_INET;
addrBind.sin_port = htons(13);
addrBind.sin_addr = INADDR_ANY;
bind(s, (sockaddr *) &addrBind, sizeof(addrBind));
That will bind the socket to the port 13 which means that it''ll receive messages sent to this port.
For more info on winsock, check out my tutorial at http://frenchwhales_site.tripod.com
Joey
SOCKADDR_IN addrBind;
addrBind.sin_family = AF_INET;
addrBind.sin_port = htons(13);
addrBind.sin_addr = INADDR_ANY;
bind(s, (sockaddr *) &addrBind, sizeof(addrBind));
That will bind the socket to the port 13 which means that it''ll receive messages sent to this port.
For more info on winsock, check out my tutorial at http://frenchwhales_site.tripod.com
Joey
Author
addrBind.sin_addr = INADDR_ANY;
error C2679: binary ''='' : no operator defined which takes a right-hand operand of type ''unsigned long'' (or there is no acceptable conversion)
Techno Grooves
error C2679: binary ''='' : no operator defined which takes a right-hand operand of type ''unsigned long'' (or there is no acceptable conversion)
Techno Grooves
Oops, sorry, it's:
addrBind.sin_addr.s_addr = INADDR_ANY;
[edited by - frenchwhale on November 18, 2002 6:36:42 PM]
addrBind.sin_addr.s_addr = INADDR_ANY;
[edited by - frenchwhale on November 18, 2002 6:36:42 PM]
I suggest you to use SDL and SDL_net, they are very easy, portable, have some source code, etc.
www.libsdl.org
[edited by - Raduprv on November 18, 2002 6:54:32 PM]
www.libsdl.org
[edited by - Raduprv on November 18, 2002 6:54:32 PM]
Author
quote:I suggest you to use SDL and SDL_net, they are very easy, portable, have some source code, etc.
REALY!!!!!!!! I'M USING SDL TO PROGRAM!!!!!
frenchwhale: still craches!!! :?
Filami
[edited by - filami on November 19, 2002 12:01:55 PM]
This topic is closed to new replies.
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