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/*
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* UDP test program. I don't think this works...
*/
#include "wvistreamlist.h"
#include "wvlog.h"
#include "wvudp.h"
#include "wvhashtable.h"
#include <time.h>
DeclareWvList(WvInPlaceBuf);
class WvUDPListener;
class WvUDPConn : public WvStream
{
friend class WvUDPListener;
public:
WvUDPConn(WvUDPListener *_parent, const WvIPPortAddr &_remaddr);
WvIPPortAddr remaddr;
protected:
WvUDPListener *parent;
time_t last_receive;
WvInPlaceBufList buflist;
virtual bool isok() const;
virtual size_t uread(void *buf, size_t size);
virtual size_t uwrite(const void *buf, size_t size);
void push(const void *buf, size_t size);
};
DeclareWvDict(WvUDPConn, WvIPPortAddr, remaddr);
class WvUDPListener : public WvUDPStream
{
friend class WvUDPConn;
WvUDPConnDict connlist;
public:
WvUDPListener(const WvIPPortAddr &_localaddr);
virtual void execute();
};
WvUDPConn::WvUDPConn(WvUDPListener *_parent, const WvIPPortAddr &_remaddr)
: remaddr(_remaddr)
{
parent = _parent;
time(&last_receive);
}
bool WvUDPConn::isok() const
{
return parent->connlist[remaddr] == this;
}
size_t WvUDPConn::uread(void *buf, size_t size)
{
if (!buflist.count()) return 0;
WvInPlaceBufList::Iter i(buflist);
i.rewind(); i.next();
WvInPlaceBuf &b = *i;
if (b.used() < size)
size = b.used();
memcpy(buf, b.get(size), size);
i.unlink();
return size;
}
size_t WvUDPConn::uwrite(const void *buf, size_t size)
{
parent->setdest(remaddr);
return parent->write(buf, size);
}
void WvUDPConn::push(const void *buf, size_t size)
{
time(&last_receive);
WvInPlaceBuf *b = new WvInPlaceBuf(size);
b->put(buf, size);
buflist.append(b, true);
}
WvUDPListener::WvUDPListener(const WvIPPortAddr &_localaddr)
: WvUDPStream(_localaddr, WvIPPortAddr()), connlist(7)
{
}
void WvUDPListener::execute()
{
WvUDPStream::execute();
unsigned char buf[2048]; // larger than an expected UDP packet
size_t len;
while (select(0))
{
len = read(buf, sizeof(buf));
if (!len) continue;
WvUDPConn *conn = connlist[*(WvIPPortAddr *)src()];
if (!conn)
{
conn = new WvUDPConn(this, *(WvIPPortAddr *)src());
connlist.add(conn, true);
}
conn->push(buf, len);
}
}
int main(int argc, char **argv)
{
WvLog err("udptest", WvLog::Error);
WvIPPortAddr localaddr(argc > 1 ? argv[1] : "0.0.0.0:2222");
WvUDPListener sock(localaddr);
err(WvLog::Info, "Local address is %s.\n", localaddr);
wvcon->autoforward(sock);
sock.autoforward(err);
WvIStreamList l;
l.append(wvcon, false, "wvcon");
l.append(&sock, false, "socket");
#if 0 // not done yet
while (wvcon->isok() && sock.isok())
{
sock.setdest(remaddr);
if (l.select(1000))
{
if (wvcon->select(0))
wvcon->callback();
else if (sock.select(0))
{
sock.callback();
err(WvLog::Info, " (remote: %s)\n", *sock.src());
}
}
}
#endif
if (!wvcon->isok() && wvcon->geterr())
err("stdin: %s\n", strerror(wvcon->geterr()));
else if (!sock.isok() && sock.geterr())
err("socket: %s\n", strerror(sock.geterr()));
return 0;
}
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