09-05-2011
Quote:
Originally Posted by
fpmurphy
Sorry, but you are still missing the point. You cannot safely pass structures between disparate platforms. You may get away with it on occasion between two particular platforms with two particular compilers but the way you intend doing it is not portable and will come back to bite you.
As other have suggested, check out serialization/deserialization and marshalling/unmarshalling techniques.
You sure can - if you know what you're doing.
Else things wouldn't work - say, like the ENTIRE internet.
What's a TCP packet? A structure. Passed between multiple types of platforms. From the bulk of the available evidence, quite successfully, too.
8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello all,
I have been trying to find any data that states what platform would garner better overall performance in an Oracle Cluster.
The scenario:
This is a high traffic e-commerce site with IIS and Commerce server on the front end. The backend consists of a Sun Solaris hardware/software... (7 Replies)
Discussion started by: kmgrady01
7 Replies
2. UNIX for Advanced & Expert Users
Hello,
Structure padding & structure size are different on Compaq & HP UNIX. When structures are transfered via netfork from Compaq to HP will this be a problem? If yes, what can be the solution?
Thanks,
shilpa (2 Replies)
Discussion started by: informshilpa
2 Replies
3. UNIX for Dummies Questions & Answers
Hi
Can anyone tell me how to pad zeroes on the left side to a numeric string in unix shell scripting
Your answer is very much appreciated
Thanks
Vijay (2 Replies)
Discussion started by: vijaygopalsk
2 Replies
4. UNIX for Dummies Questions & Answers
I have a file with records containing dates like:
SMPBR|DUP-DO NOT USE|NEW YORK||16105|BA5270715|2007-6-6|MWERNER|109||||JOHN||SMITH|MD|72211118||||||74559|21 WILMINGTON RD||D|2003-11-6|SL# MD CONTACT-LIZ RICHARDS|||0|Y|N||1411458|
How can I get the date fields in each of my records to be... (1 Reply)
Discussion started by: ChicagoBlues
1 Replies
5. Shell Programming and Scripting
Hi,
I have a fixed length text file that needs to be cut into individual files in aix and facing padding issues. If I have multiple blank spaces in the file it is just making it one while cutting the files..
Eg:-
$ - blank space
filename:file.txt
... (2 Replies)
Discussion started by: techmoris
2 Replies
6. UNIX for Dummies Questions & Answers
Hi Gurus
can I emulate solaris/sparc on virtualbox? Or other emulator to run solaris for sparc in my win7 PC?
regards,
Israel. (9 Replies)
Discussion started by: iga3725
9 Replies
7. Ubuntu
I have a Sun Blade 1000 machine that I installed Ubuntu 7.10 SPARC onto. The only user configured (configure during install) cannot use sudo. When I try to issue a command using sudo (ex. sudo apt-get install) it asks me for my password and returns the error "user not found in sudoers file". I need... (4 Replies)
Discussion started by: swilso
4 Replies
8. Solaris
Hello friends,
I hope everyone is fine and doing well. I want to learn Assembly language for SPARC architecture. Is there any emulator available for 64 bit SPARC on which one can install Oracle Solaris 11 SPARC version. And ofcourse on my intel laptop computer???
Thanks! (4 Replies)
Discussion started by: gabam
4 Replies
LEARN ABOUT DEBIAN
pcap_stats
PCAP_STATS(3PCAP) PCAP_STATS(3PCAP)
NAME
pcap_stats - get capture statistics
SYNOPSIS
#include <pcap/pcap.h>
int pcap_stats(pcap_t *p, struct pcap_stat *ps);
DESCRIPTION
pcap_stats() fills in the struct pcap_stat pointed to by its second argument. The values represent packet statistics from the start of the
run to the time of the call.
pcap_stats() is supported only on live captures, not on ``savefiles''; no statistics are stored in ``savefiles'', so no statistics are
available when reading from a ``savefile''.
A struct pcap_stat has the following members:
ps_recv
number of packets received;
ps_drop
number of packets dropped because there was no room in the operating system's buffer when they arrived, because packets
weren't being read fast enough;
ps_ifdrop
number of packets dropped by the network interface or its driver.
The statistics do not behave the same way on all platforms. ps_recv might count packets whether they passed any filter set with pcap_set-
filter(3PCAP) or not, or it might count only packets that pass the filter. It also might, or might not, count packets dropped because
there was no room in the operating system's buffer when they arrived. ps_drop is not available on all platforms; it is zero on platforms
where it's not available. If packet filtering is done in libpcap, rather than in the operating system, it would count packets that don't
pass the filter. Both ps_recv and ps_drop might, or might not, count packets not yet read from the operating system and thus not yet seen
by the application. ps_ifdrop might, or might not, be implemented; if it's zero, that might mean that no packets were dropped by the
interface, or it might mean that the statistic is unavailable, so it should not be treated as an indication that the interface did not drop
any packets.
RETURN VALUE
pcap_stats() returns 0 on success and returns -1 if there is an error or if p doesn't support packet statistics. If -1 is returned,
pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display the error text.
SEE ALSO
pcap(3PCAP), pcap_geterr(3PCAP)
7 September 2009 PCAP_STATS(3PCAP)