Ok, I understand what you are saying. I was confusing the source port and the
destination port.
And udp.GetRemoteSinPort is showing me the source port number, which is random.
In my specific case, I just have to accept that the RTP stream on 18001 is
obviously using port 18002 as well and I will simply use a different port for
the signalling protocol (eg.17999) and perhaps add a filter for the source IP
in the UDP server part like this:
if udprx.WaitingDataEx>0 then begin
rx:=udprx.RecvByte(1);
s:=udprx.Getremotesinip;
p:=udprx.Getremotesinport;
if s='192.168.2.210' then evaluate(rx);
end;
Thank you again for pointing me in the right direction. (Unfortunately I have
no budget for an assistance contract at the moment)
Regards
C
-----Ursprüngliche Nachricht-----
Von: wkitt...@windstream.net [mailto:wkitt...@windstream.net]
Gesendet: Sonntag, 18. Dezember 2016 22:06
An: synalist-public@lists.sourceforge.net
Betreff: Re: [Synalist] filtering of UDP port numbers
On 12/18/2016 03:48 PM, S.C.T.N Gmbh wrote:
> Thank you a lot.
> All this is very concise and clear.
> I have to digest it first and try to translate it into programming code.
that's understood...
> All I need to do, and that is why I posted this here, is to replace a
> serial point-to-point RS232 connection by a UDP/IP connection, that
> sends one Byte every 100ms in both directions.
why UDP? it is not guaranteed to reach the endpoint... TCP, on the other hand,
is guaranteed...
[quote]
There are two types of Internet Protocol (IP) traffic. They are TCP or
Transmission Control Protocol and UDP or User Datagram Protocol. TCP is
connection oriented – once a connection is established, data can be sent
bidirectional. UDP is a simpler, connectionless Internet protocol.
[/quote]
this link might help... there are several good sites with good explanations
found... https://www.google.com/search?q=difference+between+udp+and+tcp
> If you don't mind I will get back to you.
let's keep it on the list as much as possible... i don't do private assistance
without a contract... that's why my signature says what it does ;)
--
NOTE: No off-list assistance is given without prior approval.
*Please keep mailing list traffic on the list* unless
private contact is specifically requested and granted.
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