Re^2: Optimized remote ping (syn/ack)

Hi BrowserUk,

For my problem, you have hit the solution right on target. I checked the code and its response time is really what i needed. But couldnt understand the below line,

$p->port_number( getservbyname( "http", "tcp" ) );
[download]

I wanted to check reachability on the port '3000', so i modified it to below line,

$p->port_number( getservbyname( "3000", "tcp" ) );
[download]

But i think i made some mistake in the parameters as the code is still taking echo port(i.e., 7).

Please explain me the above line.

Thanks in advance.

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Re^3: Optimized remote ping (syn/ack) by themonk (Acolyte) on Jul 17, 2015 at 18:45 UTC
I got the correct parameters, `$p->port_number("3000", "tcp");` [download] Explanation: getservbyname function takes the first parameter and sends its defined port to tcp. E.g., "ftp" => 22, "http" => 80 If custom port is to be mentioned, dont use "getservbyname". Correct me if my understanding is wrong. Thanks guys for all the help. BTW, the response time now is "5secs for 50 IP's" GREAT Response time. :-)	[reply] [d/l]
Re^4: Optimized remote ping (syn/ack) by BrowserUk (Patriarch) on Jul 17, 2015 at 19:05 UTC
Correct me if my understanding is wrong. All you need is: `$p->port_number( 3000 );` [download] With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. I'm with torvalds on this Agile (and TDD) debunked I told'em LLVM was the way to go. But did they listen!	[reply] [d/l]
Re^5: Optimized remote ping (syn/ack) by themonk (Acolyte) on Jul 17, 2015 at 19:49 UTC
I made the necessary changes in the code. currently I am running on localhost...so according only "127.0.0.1"should be pingable on port "3000". But I get this IP "127.115.99.245" also pingable as TRUE. is there some more changes like timeout or something which i might need to tweak around.	[reply]
Re^6: Optimized remote ping (syn/ack) by afoken (Chancellor) on Jul 17, 2015 at 20:03 UTC
Re^7: Optimized remote ping (syn/ack) by themonk (Acolyte) on Jul 18, 2015 at 08:12 UTC