tcpdump mailing list archives
Re: error executing ksniff with libpcap 1.0.0
From: Giovanni Venturi <giovanni () ksniffer org>
Date: Tue, 18 Nov 2008 00:24:24 +0100
Alle lunedì 17 novembre 2008, Guy Harris ha scritto:
On Nov 16, 2008, at 1:28 PM, Giovanni Venturi wrote:Hello, I'm the author of ksniffer a GUI interface under KDE 3 to capture network packet. Till libpcap < 1.0.0 (the last stable you released) all was ok in the packet capture, but now I get the following error message:This appears to be a duplicate of your earlier message; see my recent reply to the last message you sent (summary: pcap_next() is a troublesome API as it can return NULL even if no error has occurred; pcap_next_ex() is better, or you could try using pcap_dispatch() directly). -
As man says: pcap_next_ex() returns 1 if the packet was read without problems, 0 if packets are being read from a live capture, and the timeout expired, -1 if an error occurred while reading the packet, and -2 if packets are being read from a ``savefile'', and there are no more packets to read from the savefile. If -1 is returned, pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display the error text. Can someone explain me this? int result = 9; result = pcap_next_ex(m_pcapfp, &hdr, (const u_char **)&p); Sometimes I get 9, sometimes I get 1, ... How can it be possible that the return value doesn't change result variable? This is a big mistery. Reading man I undestood that pcap_next_ex() return: 1 or 0 or -1 or -2 and nothing else. This 1.0.0 is quite buggy on Linux? Giovanni -- A KDE Italian translator and KSniffer core developer Slackware GNU/Linux current version - kernel 2.6.27.6 KSniffer Project - http://www.ksniffer.org/
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Current thread:
- error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 16)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 16)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 16)
- Re: error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 17)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 17)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 16)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 16)
- <Possible follow-ups>
- error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 17)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 17)
- Re: error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 17)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 19)
- Re: error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 19)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 17)
- Re: error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 18)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 18)
- Re: error executing ksniff with libpcap 1.0.0 Giovanni Venturi (Nov 18)
- Re: error executing ksniff with libpcap 1.0.0 Guy Harris (Nov 18)