Testing Bandwidth usage of an application

[Marcus]

I have a program that I wrote that connects to a remote server and
recieves data at random intervals. I'd like to measure the bandwidth
usage of this program. What is the best way to do this? Should I write
something into the app that can do this... if so, are there any useful
libraries for this purpose? Or, should I maybe look into using a third
party application... if so, can anyone here recommend a good one?

With much respect,
Marcus

[Maxim Yegorushkin]

Marcus wrote:

I have a program that I wrote that connects to a remote server and
recieves data at random intervals. I'd like to measure the bandwidth
usage of this program. What is the best way to do this? Should I write
something into the app that can do this... if so, are there any useful
libraries for this purpose? Or, should I maybe look into using a third
party application... if so, can anyone here recommend a good one?

Why don't you just count the bytes sent/received over the wire and
divide it on the time spent doing it?

[Marcus]

This was exactly my question... how does one "count the bytes"? Is
there a specific library you could point me to?

[Tobias Blomkvist]

Marcus sade:

This was exactly my question... how does one "count the bytes"? Is
there a specific library you could point me to?

With std::strlen =)

Sockets are pretty platform-dependent, but if you're using
unix function "read" then consult man-pages for its return value,

otherwise consult os-specific api documentation for similar return values.

Or get aquinted with what data you actually recieve.

Tobias
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[Maxim Yegorushkin]

Marcus wrote:

This was exactly my question... how does one "count the bytes"? Is
there a specific library you could point me to?

recv() returns you read byte count or -1 on error. You recv(), don't
you?