Loris, Thank you. Are there any tests that will help me to identify the problem?
-----Original Message----- From: Loris Degioanni [mailto:[EMAIL PROTECTED] Sent: Monday, July 19, 2004 12:21 PM To: [EMAIL PROTECTED] Subject: Re: [WinPcap-users] Changing filter condition dynamically works fine on Windows but fails on LINUX I hardly believe this. pcap_loop and pcap_next are simply two interfaces to access the same underlying capture system, and your prblem is in the capture systems. Loris > I need to change the filter condition dynamically. So I have another > thread that changes filter expression. > > This code works fine on Windows changing the filter condition. On LINUX > if I change a filter condition no packages come anymore through > pcap_next. > > > Will it help to use pcap_loop instead of pcap_next (pcap_next_ex on > Windows)? > > Thank you > > > Alex > > > > while((res = pcap_next_ex( m_adhandle, &header, &pkt_data)) >= 0){ > > bpf_u_int32 NetMask=0xffffff; > > struct bpf_program fcode; > > if(pcap_compile(m_adhandle, &fcode, > packet_filter, 0, NetMask) <0 ) > > { > > if (changeFilter) > > { > > if(pcap_compile(m_adhandle, &fcode, packet_filter, 0, > NetMask) <0 ) > > { > > fprintf(stderr,"\nUnable to compile the packet filter. > Check the syntax.\n"); > > return > -1; > > } > > > > //set the filter > > if(pcap_setfilter(m_adhandle, &fcode)<0) > > { > > fprintf(stderr,"\nError setting the filter.\n"); > > return -1; > > } > > } > > > > if(res == 0) > > /* Timeout elapsed */ > > continue; > > packet_handler(header, pkt_data); > > } > > > > > > ================================================================== > This is the WinPcap users list. It is archived at > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > To unsubscribe use > mailto: [EMAIL PROTECTED] > ================================================================== ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ================================================================== ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[EMAIL PROTECTED]/ To unsubscribe use mailto: [EMAIL PROTECTED] ==================================================================
