Finding Internet Connection Download and Upload rate dynamically
Hello Experts,
I am currently developing an Voice Chat application that requires to know the upload
and download rate (in kbps) of the internet connection so that the application can adjust the
voice communication accordingly. It can be also used to show that the network bandwidth
available at a particular time is not suitable for two-way voice communication. Is there any
VC code available to do the same.
I am currently developing an Voice Chat application that requires to know the upload
and download rate (in kbps) of the internet connection so that the application can adjust the
voice communication accordingly. It can be also used to show that the network bandwidth
available at a particular time is not suitable for two-way voice communication. Is there any
VC code available to do the same.
To find the actual ul/dl rate you can try a conenction from client to server and make a quick counter on ul/dl files rate.
ASKER
Thanks nonubik for yur help,
I have to actually find the net activity taking place at any instant and determine how
much bandwidth is available to me before sending any data. Because i
require information like total upload bandwidth and download bandwidth available
at a instant so that i cn determine the quantity of data to send and accept.
I have to actually find the net activity taking place at any instant and determine how
much bandwidth is available to me before sending any data. Because i
require information like total upload bandwidth and download bandwidth available
at a instant so that i cn determine the quantity of data to send and accept.
Then you can use a 'calibrating' stage. You can send and receive chunks of data to/from the server for short amount of time and compute the rate.
But this can be relative as the user may be in the middle of some large download and the dload rate you'll compute will be smaller than the usual, or the reverse, as you'll compute some dload rate but while your app runs the user decides to do some dload.
But this can be relative as the user may be in the middle of some large download and the dload rate you'll compute will be smaller than the usual, or the reverse, as you'll compute some dload rate but while your app runs the user decides to do some dload.
ASKER
nonubik, there are bandwidth monitors available that detect and display the internet activity
taking place at the client. I am amazed at how they do that. They certainly do not send any data
across the internet for doing that. I want to use the same mechanism. I want to compute the
available bandwidth every time i send a packet.
ASKER
I have found the answer to the problem.
They are many ways to implement bandwidth monitor.
1. The most prominent of them are either to put the adapter in promiscuous mode.
Promiscuous mode is a special reception mode where an adapter will receive all frames on
the ring, not just frames are addressed to that adapter which is an disadvantage.
2. The other way is to implement a Dll hook that will notify our function whenever calls are made
to transfer or receive network data
http://www.hollistech.com/Resources/IpHook/hts_iphook.htm
OR
by implementing a Winsock2 Layered Service Provider
http://www.microsoft.com/msj/0599/LayeredService/LayeredService.aspx
ASKER
As i have given the solution i request the moderator to close the question and award the
points to me.
ASKER CERTIFIED SOLUTION
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