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[lwip-users] Re: decreasing throughput ends in lwip-collapse
|
From: |
Andre Puschmann |
|
Subject: |
[lwip-users] Re: decreasing throughput ends in lwip-collapse |
|
Date: |
Tue, 24 Oct 2006 22:41:42 +0200 |
|
User-agent: |
Thunderbird 1.5.0.4 (X11/20060619) |
hello everybody,
today i switched our port up to lwip version 1.1.1.
now everything runs a bit better with some litte changes.
but nevertheless i got an other odd problem. with my current
configuration (opt.h attached) i can download this testfile up to 500
times this with my small test-application i wrote.
but one point the througput gets to a crawl once again.
i figured out that it has something to do with "ignored or droped"
packets which ends up in a delayed retransmission of a couple of packets
from the windows xp to the board. the following file transfer is speedy
again.
i also attached to ethereal captures .. first one shows a normal
transfer of the file 200msecs ..
the "capture_download_nok"-file shows the droped packets and the
resulting delay (see time row).
comments and tips are appreciated.
best regards
andre
Andre Puschmann wrote:
> hi folks,
> as already mentioned some days ago we got a lwip port running on our
> custom ppc-board.
> directly after starting up lwip everything goes quite fast but with
> every single byte lwip gets slower and slower and finally totally stop
> working.
>
> i am getting this with a small http-server running on the board serving
> a 300k file. i am downloading this file multiple times with my windows
> box starting at 1.2mb/sec and ending up with 100 to 200kb/sec. after
> 30 times doing this the machine hangs ..
>
> does anybody of you guys already had such problems?
>
>
> any comments and suggestions are more than welcome.
>
> regards
>
> andre
/*
* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <address@hidden>
*
*/
#ifndef __LWIP_OPT_H__
#define __LWIP_OPT_H__
/* Include user defined options first */
#include "lwipopts.h"
#include "lwip/debug.h"
/* Define default values for unconfigured parameters. */
/* Platform specific locking */
/*
* enable SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection
* for certain critical regions during buffer allocation, deallocation and
memory
* allocation and deallocation.
*/
#ifndef SYS_LIGHTWEIGHT_PROT
#define SYS_LIGHTWEIGHT_PROT 0
#endif
#ifndef NO_SYS
#define NO_SYS 0
#endif
/* ---------- Memory options ---------- */
/* MEM_ALIGNMENT: should be set to the alignment of the CPU for which
lwIP is compiled. 4 byte alignment -> define MEM_ALIGNMENT to 4, 2
byte alignment -> define MEM_ALIGNMENT to 2. */
#ifndef MEM_ALIGNMENT
#define MEM_ALIGNMENT 4
#endif
/* MEM_SIZE: the size of the heap memory. If the application will send
a lot of data that needs to be copied, this should be set high. */
#ifndef MEM_SIZE
#define MEM_SIZE 32 * 1024//1600
#endif
#ifndef MEMP_SANITY_CHECK
#define MEMP_SANITY_CHECK 0
#endif
/* MEMP_NUM_PBUF: the number of memp struct pbufs. If the application
sends a lot of data out of ROM (or other static memory), this
should be set high. */
#ifndef MEMP_NUM_PBUF
#define MEMP_NUM_PBUF 16
#endif
/* Number of raw connection PCBs */
#ifndef MEMP_NUM_RAW_PCB
#define MEMP_NUM_RAW_PCB 4
#endif
/* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
per active UDP "connection". */
#ifndef MEMP_NUM_UDP_PCB
#define MEMP_NUM_UDP_PCB 4
#endif
/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
connections. */
#ifndef MEMP_NUM_TCP_PCB
#define MEMP_NUM_TCP_PCB 5
#endif
/* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
connections. */
#ifndef MEMP_NUM_TCP_PCB_LISTEN
#define MEMP_NUM_TCP_PCB_LISTEN 8
#endif
/* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
segments. */
#ifndef MEMP_NUM_TCP_SEG
#define MEMP_NUM_TCP_SEG 16
#endif
/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
timeouts. */
#ifndef MEMP_NUM_SYS_TIMEOUT
#define MEMP_NUM_SYS_TIMEOUT 3
#endif
/* The following four are used only with the sequential API and can be
set to 0 if the application only will use the raw API. */
/* MEMP_NUM_NETBUF: the number of struct netbufs. */
#ifndef MEMP_NUM_NETBUF
#define MEMP_NUM_NETBUF 2
#endif
/* MEMP_NUM_NETCONN: the number of struct netconns. */
#ifndef MEMP_NUM_NETCONN
#define MEMP_NUM_NETCONN 4
#endif
/* MEMP_NUM_APIMSG: the number of struct api_msg, used for
communication between the TCP/IP stack and the sequential
programs. */
#ifndef MEMP_NUM_API_MSG
#define MEMP_NUM_API_MSG 8
#endif
/* MEMP_NUM_TCPIPMSG: the number of struct tcpip_msg, which is used
for sequential API communication and incoming packets. Used in
src/api/tcpip.c. */
#ifndef MEMP_NUM_TCPIP_MSG
#define MEMP_NUM_TCPIP_MSG 8
#endif
/* ---------- Pbuf options ---------- */
/* PBUF_POOL_SIZE: the number of buffers in the pbuf pool. */
#ifndef PBUF_POOL_SIZE
#define PBUF_POOL_SIZE 16
#endif
/* PBUF_POOL_BUFSIZE: the size of each pbuf in the pbuf pool. */
#ifndef PBUF_POOL_BUFSIZE
#define PBUF_POOL_BUFSIZE 1500 //128
#endif
/* PBUF_LINK_HLEN: the number of bytes that should be allocated for a
link level header. Defaults to 14 for Ethernet. */
#ifndef PBUF_LINK_HLEN
#define PBUF_LINK_HLEN 14
#endif
/* ---------- ARP options ---------- */
/** Number of active hardware address, IP address pairs cached */
#ifndef ARP_TABLE_SIZE
#define ARP_TABLE_SIZE 10
#endif
/**
* If enabled, outgoing packets are queued during hardware address
* resolution.
*
* This feature has not stabilized yet. Single-packet queueing is
* believed to be stable, multi-packet queueing is believed to
* clash with the TCP segment queueing.
*
* As multi-packet-queueing is currently disabled, enabling this
* _should_ work, but we need your testing feedback on lwip-users.
*
*/
#ifndef ARP_QUEUEING
#define ARP_QUEUEING 1
#endif
/* This option is deprecated */
#ifdef ETHARP_QUEUE_FIRST
#error ETHARP_QUEUE_FIRST option is deprecated. Remove it from your lwipopts.h.
#endif
/* This option is removed to comply with the ARP standard */
#ifdef ETHARP_ALWAYS_INSERT
#error ETHARP_ALWAYS_INSERT option is deprecated. Remove it from your
lwipopts.h.
#endif
/* ---------- IP options ---------- */
/* Define IP_FORWARD to 1 if you wish to have the ability to forward
IP packets across network interfaces. If you are going to run lwIP
on a device with only one network interface, define this to 0. */
#ifndef IP_FORWARD
#define IP_FORWARD 0
#endif
/* If defined to 1, IP options are allowed (but not parsed). If
defined to 0, all packets with IP options are dropped. */
#ifndef IP_OPTIONS
#define IP_OPTIONS 1
#endif
/** IP reassembly and segmentation. Even if they both deal with IP
* fragments, note that these are orthogonal, one dealing with incoming
* packets, the other with outgoing packets
*/
/** Reassemble incoming fragmented IP packets */
#ifndef IP_REASSEMBLY
#define IP_REASSEMBLY 1
#endif
/** Fragment outgoing IP packets if their size exceeds MTU */
#ifndef IP_FRAG
#define IP_FRAG 1
#endif
/* ---------- ICMP options ---------- */
#ifndef ICMP_TTL
#define ICMP_TTL 255
#endif
/* ---------- RAW options ---------- */
#ifndef LWIP_RAW
#define LWIP_RAW 1
#endif
#ifndef RAW_TTL
#define RAW_TTL 255
#endif
/* ---------- DHCP options ---------- */
#ifndef LWIP_DHCP
#define LWIP_DHCP 0
#endif
/* 1 if you want to do an ARP check on the offered address
(recommended). */
#ifndef DHCP_DOES_ARP_CHECK
#define DHCP_DOES_ARP_CHECK 1
#endif
/* ---------- UDP options ---------- */
#ifndef LWIP_UDP
#define LWIP_UDP 1
#endif
#ifndef UDP_TTL
#define UDP_TTL 255
#endif
/* ---------- TCP options ---------- */
#ifndef LWIP_TCP
#define LWIP_TCP 1
#endif
#ifndef TCP_TTL
#define TCP_TTL 255
#endif
#ifndef TCP_WND
#define TCP_WND 4 * 1456 //2048
#endif
#ifndef TCP_MAXRTX
#define TCP_MAXRTX 12
#endif
#ifndef TCP_SYNMAXRTX
#define TCP_SYNMAXRTX 6
#endif
/* Controls if TCP should queue segments that arrive out of
order. Define to 0 if your device is low on memory. */
#ifndef TCP_QUEUE_OOSEQ
#define TCP_QUEUE_OOSEQ 1
#endif
/* TCP Maximum segment size. */
#ifndef TCP_MSS
#define TCP_MSS 1456 /* A *very* conservative default.
*/
#endif
/* TCP sender buffer space (bytes). */
#ifndef TCP_SND_BUF
#define TCP_SND_BUF 4 * 1456//256
#endif
/* TCP sender buffer space (pbufs). This must be at least = 2 *
TCP_SND_BUF/TCP_MSS for things to work. */
#ifndef TCP_SND_QUEUELEN
#define TCP_SND_QUEUELEN 4 * TCP_SND_BUF/TCP_MSS
#endif
/* Maximum number of retransmissions of data segments. */
/* Maximum number of retransmissions of SYN segments. */
/* TCP writable space (bytes). This must be less than or equal
to TCP_SND_BUF. It is the amount of space which must be
available in the tcp snd_buf for select to return writable */
#ifndef TCP_SNDLOWAT
#define TCP_SNDLOWAT TCP_SND_BUF/2
#endif
/* Support loop interface (127.0.0.1) */
#ifndef LWIP_HAVE_LOOPIF
#define LWIP_HAVE_LOOPIF 0
#endif
#ifndef LWIP_EVENT_API
#define LWIP_EVENT_API 0
#define LWIP_CALLBACK_API 1
#else
#define LWIP_EVENT_API 1
#define LWIP_CALLBACK_API 0
#endif
#ifndef LWIP_COMPAT_SOCKETS
#define LWIP_COMPAT_SOCKETS 1
#endif
#ifndef TCPIP_THREAD_PRIO
#define TCPIP_THREAD_PRIO 1
#endif
#ifndef SLIPIF_THREAD_PRIO
#define SLIPIF_THREAD_PRIO 1
#endif
#ifndef PPP_THREAD_PRIO
#define PPP_THREAD_PRIO 1
#endif
#ifndef DEFAULT_THREAD_PRIO
#define DEFAULT_THREAD_PRIO 1
#endif
/* ---------- Socket Options ---------- */
/* Enable SO_REUSEADDR and SO_REUSEPORT options */
#ifdef SO_REUSE
/* I removed the lot since this was an ugly hack. It broke the raw-API.
It also came with many ugly goto's, Christiaan Simons. */
#error "SO_REUSE currently unavailable, this was a hack"
#endif
/* ---------- Statistics options ---------- */
#ifndef LWIP_STATS
#define LWIP_STATS 1
#endif
#if LWIP_STATS
#ifndef LWIP_STATS_DISPLAY
#define LWIP_STATS_DISPLAY 0
#endif
#ifndef LINK_STATS
#define LINK_STATS 1
#endif
#ifndef IP_STATS
#define IP_STATS 1
#endif
#ifndef IPFRAG_STATS
#define IPFRAG_STATS 1
#endif
#ifndef ICMP_STATS
#define ICMP_STATS 1
#endif
#ifndef UDP_STATS
#define UDP_STATS 1
#endif
#ifndef TCP_STATS
#define TCP_STATS 1
#endif
#ifndef MEM_STATS
#define MEM_STATS 1
#endif
#ifndef MEMP_STATS
#define MEMP_STATS 1
#endif
#ifndef PBUF_STATS
#define PBUF_STATS 1
#endif
#ifndef SYS_STATS
#define SYS_STATS 1
#endif
#ifndef RAW_STATS
#define RAW_STATS 0
#endif
#else
#define LINK_STATS 0
#define IP_STATS 0
#define IPFRAG_STATS 0
#define ICMP_STATS 0
#define UDP_STATS 0
#define TCP_STATS 0
#define MEM_STATS 0
#define MEMP_STATS 0
#define PBUF_STATS 0
#define SYS_STATS 0
#define RAW_STATS 0
#define LWIP_STATS_DISPLAY 0
#endif /* LWIP_STATS */
/* ---------- PPP options ---------- */
#ifndef PPP_SUPPORT
#define PPP_SUPPORT 0 /* Set for PPP */
#endif
#if PPP_SUPPORT
#define NUM_PPP 1 /* Max PPP sessions. */
#ifndef PAP_SUPPORT
#define PAP_SUPPORT 0 /* Set for PAP. */
#endif
#ifndef CHAP_SUPPORT
#define CHAP_SUPPORT 0 /* Set for CHAP. */
#endif
#define MSCHAP_SUPPORT 0 /* Set for MSCHAP (NOT
FUNCTIONAL!) */
#define CBCP_SUPPORT 0 /* Set for CBCP (NOT
FUNCTIONAL!) */
#define CCP_SUPPORT 0 /* Set for CCP (NOT FUNCTIONAL!)
*/
#ifndef VJ_SUPPORT
#define VJ_SUPPORT 0 /* Set for VJ header
compression. */
#endif
#ifndef MD5_SUPPORT
#define MD5_SUPPORT 0 /* Set for MD5 (see also CHAP) */
#endif
/*
* Timeouts.
*/
#define FSM_DEFTIMEOUT 6 /* Timeout time in seconds */
#define FSM_DEFMAXTERMREQS 2 /* Maximum Terminate-Request
transmissions */
#define FSM_DEFMAXCONFREQS 10 /* Maximum Configure-Request
transmissions */
#define FSM_DEFMAXNAKLOOPS 5 /* Maximum number of nak loops
*/
#define UPAP_DEFTIMEOUT 6 /* Timeout (seconds) for
retransmitting req */
#define UPAP_DEFREQTIME 30 /* Time to wait for auth-req
from peer */
#define CHAP_DEFTIMEOUT 6 /* Timeout time in seconds */
#define CHAP_DEFTRANSMITS 10 /* max # times to send
challenge */
/* Interval in seconds between keepalive echo requests, 0 to disable. */
#if 1
#define LCP_ECHOINTERVAL 0
#else
#define LCP_ECHOINTERVAL 10
#endif
/* Number of unanswered echo requests before failure. */
#define LCP_MAXECHOFAILS 3
/* Max Xmit idle time (in jiffies) before resend flag char. */
#define PPP_MAXIDLEFLAG 100
/*
* Packet sizes
*
* Note - lcp shouldn't be allowed to negotiate stuff outside these
* limits. See lcp.h in the pppd directory.
* (XXX - these constants should simply be shared by lcp.c instead
* of living in lcp.h)
*/
#define PPP_MTU 1500 /* Default MTU (size of Info
field) */
#if 0
#define PPP_MAXMTU 65535 - (PPP_HDRLEN + PPP_FCSLEN)
#else
#define PPP_MAXMTU 1500 /* Largest MTU we allow */
#endif
#define PPP_MINMTU 64
#define PPP_MRU 1500 /* default MRU = max length of
info field */
#define PPP_MAXMRU 1500 /* Largest MRU we allow */
#define PPP_DEFMRU 296 /* Try for this */
#define PPP_MINMRU 128 /* No MRUs below this */
#define MAXNAMELEN 256 /* max length of hostname or
name for auth */
#define MAXSECRETLEN 256 /* max length of password or
secret */
#endif /* PPP_SUPPORT */
/* checksum options - set to zero for hardware checksum support */
#ifndef CHECKSUM_GEN_IP
#define CHECKSUM_GEN_IP 1
#endif
#ifndef CHECKSUM_GEN_UDP
#define CHECKSUM_GEN_UDP 1
#endif
#ifndef CHECKSUM_GEN_TCP
#define CHECKSUM_GEN_TCP 1
#endif
#ifndef CHECKSUM_CHECK_IP
#define CHECKSUM_CHECK_IP 1
#endif
#ifndef CHECKSUM_CHECK_UDP
#define CHECKSUM_CHECK_UDP 1
#endif
#ifndef CHECKSUM_CHECK_TCP
#define CHECKSUM_CHECK_TCP 1
#endif
/* Debugging options all default to off */
#ifndef DBG_TYPES_ON
#define DBG_TYPES_ON 0
#endif
#ifndef ETHARP_DEBUG
#define ETHARP_DEBUG DBG_OFF
#endif
#ifndef NETIF_DEBUG
#define NETIF_DEBUG DBG_OFF
#endif
#ifndef PBUF_DEBUG
#define PBUF_DEBUG DBG_OFF
#endif
#ifndef API_LIB_DEBUG
#define API_LIB_DEBUG DBG_OFF
#endif
#ifndef API_MSG_DEBUG
#define API_MSG_DEBUG DBG_OFF
#endif
#ifndef SOCKETS_DEBUG
#define SOCKETS_DEBUG DBG_OFF
#endif
#ifndef ICMP_DEBUG
#define ICMP_DEBUG DBG_OFF
#endif
#ifndef INET_DEBUG
#define INET_DEBUG DBG_OFF
#endif
#ifndef IP_DEBUG
#define IP_DEBUG DBG_OFF
#endif
#ifndef IP_REASS_DEBUG
#define IP_REASS_DEBUG DBG_OFF
#endif
#ifndef RAW_DEBUG
#define RAW_DEBUG DBG_OFF
#endif
#ifndef MEM_DEBUG
#define MEM_DEBUG DBG_OFF
#endif
#ifndef MEMP_DEBUG
#define MEMP_DEBUG DBG_OFF
#endif
#ifndef SYS_DEBUG
#define SYS_DEBUG DBG_OFF
#endif
#ifndef TCP_DEBUG
#define TCP_DEBUG DBG_OFF
#endif
#ifndef TCP_INPUT_DEBUG
#define TCP_INPUT_DEBUG DBG_OFF
#endif
#ifndef TCP_FR_DEBUG
#define TCP_FR_DEBUG DBG_OFF
#endif
#ifndef TCP_RTO_DEBUG
#define TCP_RTO_DEBUG DBG_OFF
#endif
#ifndef TCP_REXMIT_DEBUG
#define TCP_REXMIT_DEBUG DBG_OFF
#endif
#ifndef TCP_CWND_DEBUG
#define TCP_CWND_DEBUG DBG_OFF
#endif
#ifndef TCP_WND_DEBUG
#define TCP_WND_DEBUG DBG_OFF
#endif
#ifndef TCP_OUTPUT_DEBUG
#define TCP_OUTPUT_DEBUG DBG_OFF
#endif
#ifndef TCP_RST_DEBUG
#define TCP_RST_DEBUG DBG_OFF
#endif
#ifndef TCP_QLEN_DEBUG
#define TCP_QLEN_DEBUG DBG_OFF
#endif
#ifndef UDP_DEBUG
#define UDP_DEBUG DBG_OFF
#endif
#ifndef TCPIP_DEBUG
#define TCPIP_DEBUG DBG_OFF
#endif
#ifndef PPP_DEBUG
#define PPP_DEBUG DBG_OFF
#endif
#ifndef SLIP_DEBUG
#define SLIP_DEBUG DBG_OFF
#endif
#ifndef DHCP_DEBUG
#define DHCP_DEBUG DBG_OFF
#endif
#ifndef DBG_MIN_LEVEL
#define DBG_MIN_LEVEL DBG_LEVEL_OFF
#endif
#endif /* __LWIP_OPT_H__ */
No. Time Source Destination Protocol Info
600 2.369423 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
601 2.369435 192.168.23.100 192.168.1.1 TCP 2396 >
http [ACK] Seq=15 Ack=296701 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
602 2.370037 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
603 2.370397 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
604 2.370409 192.168.23.100 192.168.1.1 TCP 2396 >
http [ACK] Seq=15 Ack=298205 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
605 2.371015 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
606 2.371372 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
607 2.371384 192.168.23.100 192.168.1.1 TCP 2396 >
http [ACK] Seq=15 Ack=299709 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
608 2.371909 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
609 2.372271 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
610 2.372283 192.168.23.100 192.168.1.1 TCP 2396 >
http [ACK] Seq=15 Ack=301213 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
611 2.372809 192.168.1.1 192.168.23.100 HTTP
HTTP/1.0 200 OK (image/bmp)
612 2.373116 192.168.1.1 192.168.23.100 TCP http >
2396 [FIN, ACK] Seq=301965 Ack=15 Win=5824 Len=0
613 2.373132 192.168.23.100 192.168.1.1 TCP 2396 >
http [ACK] Seq=15 Ack=301966 Win=64768 [TCP CHECKSUM INCORRECT] Len=0
614 2.373270 192.168.23.100 192.168.1.1 TCP 2396 >
http [FIN, ACK] Seq=15 Ack=301966 Win=64768 [TCP CHECKSUM INCORRECT] Len=0
615 2.562644 192.168.23.100 192.168.1.1 TCP 2397 >
http [SYN] Seq=0 Len=0 MSS=1460
616 2.562831 192.168.1.1 192.168.23.100 TCP http >
2396 [ACK] Seq=301966 Ack=16 Win=5823 Len=0
617 5.577843 192.168.23.100 192.168.1.1 TCP 2397 >
http [SYN] Seq=0 Len=0 MSS=1460
618 5.578142 192.168.1.1 192.168.23.100 TCP http >
2397 [SYN, ACK] Seq=0 Ack=1 Win=5824 Len=0 MSS=1456
619 5.578167 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=1 Ack=1 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
620 5.578249 192.168.23.100 192.168.1.1 HTTP GET
/camera.bmp
621 11.593171 192.168.23.100 192.168.1.1 HTTP [TCP
Retransmission] GET /camera.bmp
622 11.593643 192.168.1.1 192.168.23.100 TCP http >
2397 [ACK] Seq=1 Ack=16 Win=5824 Len=0
623 11.593751 192.168.1.1 192.168.23.100 TCP [TCP
Dup ACK 622#1] http > 2397 [ACK] Seq=1 Ack=16 Win=5824 Len=0
624 11.594162 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
625 11.594605 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
626 11.594622 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=1166 Win=64355 [TCP CHECKSUM INCORRECT] Len=0
627 11.594802 192.168.1.1 192.168.23.100 TCP [TCP
Dup ACK 625#1] http > 2397 [ACK] Seq=1166 Ack=16 Win=5824 Len=0
628 13.962649 192.168.1.1 192.168.23.100 TCP [TCP
Retransmission] [TCP segment of a reassembled PDU]
629 13.962680 192.168.23.100 192.168.1.1 TCP [TCP
Dup ACK 626#1] 2397 > http [ACK] Seq=16 Ack=1166 Win=64355 [TCP CHECKSUM
INCORRECT] Len=0
630 13.962782 192.168.1.1 192.168.23.100 TCP [TCP
Retransmission] [TCP segment of a reassembled PDU]
631 13.962790 192.168.23.100 192.168.1.1 TCP [TCP
Dup ACK 626#2] 2397 > http [ACK] Seq=16 Ack=1166 Win=64355 [TCP CHECKSUM
INCORRECT] Len=0
632 13.963023 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
633 13.963090 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
634 13.963104 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=2670 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
635 13.963157 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
636 14.108671 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=3422 Win=64768 [TCP CHECKSUM INCORRECT] Len=0
637 14.109082 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
638 14.109147 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
639 14.109164 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=4926 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
640 14.109223 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
641 14.109504 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
642 14.109517 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=6990 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
643 14.109731 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
644 14.110356 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
645 14.110368 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=7934 Win=64576 [TCP CHECKSUM INCORRECT] Len=0
....
.... /* cutted */
....
1218 14.287909 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=295198 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
1219 14.288435 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1220 14.288795 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1221 14.288807 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=296702 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
1222 14.289333 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1223 14.289691 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1224 14.289703 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=298206 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
1225 14.290229 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1226 14.290586 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1227 14.290597 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=299710 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
1228 14.291118 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1229 14.291480 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
1230 14.291493 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=301214 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
1231 14.292018 192.168.1.1 192.168.23.100 HTTP
HTTP/1.0 200 OK (image/bmp)
1232 14.292325 192.168.1.1 192.168.23.100 TCP http >
2397 [FIN, ACK] Seq=301966 Ack=16 Win=5824 Len=0
1233 14.292340 192.168.23.100 192.168.1.1 TCP 2397 >
http [ACK] Seq=16 Ack=301967 Win=64768 [TCP CHECKSUM INCORRECT] Len=0
1234 14.292529 192.168.23.100 192.168.1.1 TCP 2397 >
http [FIN, ACK] Seq=16 Ack=301967 Win=64768 [TCP CHECKSUM INCORRECT] Len=0
No. Time Source Destination Protocol Info
3 0.000161 192.168.23.100 192.168.1.1 TCP 1759 >
http [SYN] Seq=0 Len=0 MSS=1460
4 0.000413 192.168.1.1 192.168.23.100 TCP http >
1759 [SYN, ACK] Seq=0 Ack=1 Win=5824 Len=0 MSS=1456
5 0.000428 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=1 Ack=1 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
6 0.000520 192.168.23.100 192.168.1.1 HTTP GET
/camera.bmp
7 0.001249 192.168.1.1 192.168.23.100 TCP http >
1759 [ACK] Seq=1 Ack=16 Win=5824 Len=0
8 0.001362 192.168.1.1 192.168.23.100 TCP [TCP
Dup ACK 7#1] http > 1759 [ACK] Seq=1 Ack=16 Win=5824 Len=0
9 0.001824 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
10 0.002270 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
11 0.002287 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=1166 Win=64355 [TCP CHECKSUM INCORRECT] Len=0
12 0.002848 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
13 0.003199 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
14 0.003210 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=2670 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
15 0.003808 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
16 0.004162 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
17 0.004174 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=4174 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
18 0.004694 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
19 0.005046 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
20 0.005059 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=5678 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
....
.... /* cutted */
....
597 0.180928 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
598 0.181283 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
599 0.181295 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=295950 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
600 0.181812 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
601 0.182162 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
602 0.182174 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=297454 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
603 0.182772 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
604 0.183127 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
605 0.183142 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=298958 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
606 0.183663 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
607 0.184014 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
608 0.184034 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=300462 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
609 0.184610 192.168.1.1 192.168.23.100 TCP [TCP
segment of a reassembled PDU]
610 0.184960 192.168.1.1 192.168.23.100 HTTP
HTTP/1.0 200 OK (image/bmp)
611 0.184971 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=301966 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
612 0.185518 192.168.1.1 192.168.23.100 TCP http >
1759 [FIN, ACK] Seq=301966 Ack=16 Win=5824 Len=0
613 0.185533 192.168.23.100 192.168.1.1 TCP 1759 >
http [ACK] Seq=16 Ack=301967 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
614 0.185765 192.168.23.100 192.168.1.1 TCP 1759 >
http [FIN, ACK] Seq=16 Ack=301967 Win=65520 [TCP CHECKSUM INCORRECT] Len=0
615 0.185931 192.168.1.1 192.168.23.100 TCP http >
1759 [ACK] Seq=301967 Ack=17 Win=5823 Len=0