Re: Router Shark.rar
Yvette Burkhammer
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What I know out of the trace is that the trace is taken on the server.
So from that point I only can talk clear about the server. And I can only asume what the client sees. Because I see only the client packets that reach the server. I asume that the client is a few hops (router) away from the server, because the TTL is at 45 in the client packets.
But if I understand your question right than this all is not your question. Right? You want to know why there is the "DUP ACK" in FRAME 17, for example. For the answer I must start in FRAME 7: There is a PACKET with SEQ=111 and LEN=55 wich arrives the server. Afer that the server receives more segments in correct order until FRAME 16. In FRAME 16 he receives the same SEGMENT as he has seen in FRAME 7, but he has received so far Segements till 275. And he is expecting 276. So as an respond to FRAME 16 the server sends in FRAME 17 the ACK with the next expected SEQ number 276. Later in the trace behaviour is still there, but with a few more events around.
I don't think that we face a real packet loss problem here.
The problem is more a combination of the 200ms delayACK timer of the windows server, the nature of the traffic sending 55 bytes every 100ms and the FDR dropping its RTO below 200 ms.
So if everything runs smoothly, we should see a 55 byte (single) segment arriving at 10 0ms intervals.
A single segment is not enough for the windows TCP stack to send an ACK right away so we wait for the next segment to arrive or for the 200 ms delayAck timer to expire, whatever occurs first.
The trace shows that the retransmission timeout in FDR drops below 200 ms which will cause the spurious retransmissions that you see.
So in order to fix this problem (if it still needs fixing after more than a year...) would be to turn off delayed acknowledgements in windows TCP.
Who here has a PS2? Want to expand it's functionality? You can install custom firmware on your ps2 with no hardware mods using FreeMcboot, and a few tools.
DISCLAIMER: This guide is for playing games that you legally own. I do not condone, or will help you with pirating games.
What you will need:
A "FAT" PS2. SCPH-300xx, SCPH-500xx.
(The method I'll be using here DOES NOT WORK on PS2 Slimline models. SCPH-700xx, SCPH-900xx)
A Gameshark 2 (Any Gameshark 2 will work)
An 8mb PS2 Memory Card
A PlayStation game
A USB Memory Stick (FAT16)
FreeMcBoot V1.8b Noobie Package: _Package.rar
PS2 Exploit Utility: _Exploit_Utility_5.0.zip
PS2 Save Builder:
Optional:
A PS2 HDD and Broadband Adapter (SCPH-10350)
An IDE Hard drive (Western Digital drives do not Fit the PS2 HDD Adapter)
First up we need to create the exploit. Open up PS2 Exploit Utility. (Run as administrator)
Once open, you will see this screen:
Next, click on the Title.DB tab. Now take a look at your PS1 game. On the front there should be a number like SLUS-XXXXX. The code will be slightly different depending on your region.
SLES, SCES - PAL
SLUS, SCUS - NTSC US
SLPM, SCPM, SLPS, SCPS - NTSC JP
I'm using a US Copy of Vigilante 8, so my code is SLUS-00510.
We need to add it to our title.db, so in the box labeled "Current ID" type "SLUS_005.10"
DO NOT WRITE IT AS IT APPEARS ON THE CASE!
Now, click "Add to Title.DB"
We are finished in this tab. Next click the Region tab. Make sure your region is selected. Mine is NTSC.
Now we need to finish creating the exploit. Click the "Create Exploit" tab, and select the "Memory Card Format (XPS)" option.
Click "Create Exploit" Ignore the warning that we dont have any ELF's installed, as we are just installing FreeMcBoot at this time. When finished close the PS2 Exploit Utility.
Next, open ps2 save builder. (Run as administrator)
Click File>Open
Then navigate to where you saved your exploit. (In this case C:\IsCentral
Open IsCentral.xps
You will now see this:
Don't worry about any of the files here, simply go to File>Save As and save as "your systemconfiguration.md"
Close PS2 Save Builder.
Next, we need to rename the file extension of "your systemconfiguration.md" to "your systemconfiguration.ps2"
Once finished, copy "your systemconfiguration.ps2" to the root of your usb stick, along with the "Noobie_Package" folder.
Now. Over to the PS2. (I don't have any photos for this step right now)
Turn on your PS2, and put in your Gameshark 2 disc. (Dont plug in the USB stick just yet.)
Wait for the gameshark to reach the main menu. Plug in your usb stick.
Select "Memory Manager and Gamesaves" When asked if you wish to load gamesaves from CD-ROM, Select "No."
There are two boxes, one on the left, and one on the right. The box on the left should be your USB stick, it will show "your systemconfiguration.ps2" and Noobie_Package." On the right, is your memory card.
Press "L2" to move to the box on the left. Highlight "your systemconfiguration.ps2" and press "X," press "O" and then "copy to target."
Restart your PS2, and remove the gameshark. Now put in the PS1 game we used earlier to create the exploit. The game will begin to boot, but instead, we get: uLaunch.elf!
Click the "O" button to open the file browser.
Now, select MASS:/ with the "O" button, highlight "Noobie_Package" press "R1" then select "copy."
Now back out to the root with "Triangle" button and select "MC0:/" and then select "BADATA-SYSTEM/" and then press "R1" and then "Paste."
Now, open "Noobie_Package" and select "FREE_MCBOOT.ELF" It will run the FreeMcBoot Loader. Select "Normal Install with the "X" button and follow the on screen instructions. Once finished, select "Launch FMCB." The system will reboot, and FreeMcBoot will be installed.
The newest homebrew bootsoftware can be used with an external USB hardrive and a memorystick that contains the homebrew software. Works for almost all PS2 models, except the last ones. Yesterday , I installed the new software, put a lot of ISO files of my own PS2 DVD collection on a 320 gigabyte external USB harddrive and all works 100%. Nice menu. Fast loading. No DVD-lens being used anymore.
EDIT - Unless you meant if you have to have the Gameshark after getting the software... In which case no, you only would require it to get started. Once you have the proper software (FMBC) on the memory card, you're set from there.
Yeah, I have some games I'd like to take off and put on but I'm too lazy to take it out of the PS2 and try and get it connected to my PC again. I may though if OPL actually gets updated sometime in here.
This is a great method for singular titles and can be copied in around 20 minutes (or less) per game. Not great if you are wanting to load up a large number... but my understanding is you really shouldn't pull the hard drive out of the console unless you need to. You can end up damaging the connectors.
Yesterday i tried the build in network functionality of Open PS2 Loader 0.9.3 (2016). It was rather easy to set up. You just have to make a directory on your desktop PC/laptop, make it public shared and connect a network cable from your PS2 to a router.
There was a method to use Action Replay Max that could load an ELF from a pen drive and start the process. I ran into nothing but headaches and gave up. Apparently, it is easier to send a memory card to someone that has the softmod on it already. I actually did buy a card about 2-3 years ago and intended to send it to someone on these forums, and bam... outdoor soccer started up again, and I just forgot.
If you just want to run emulators, soft modding a Wii or OG Xbox is easier. Maybe I will look into this again as it would be nice to rip my PS2 games onto a drive and just run them from there. Mine is an original FAT model that still works!
Here's an interesting question. Many of these utility discs offer game save compression and decompression. FMCB and related folder cannot be seen by the cheat discs so you can't just copy them over which is why we have all these different methods to create these special MCs. Is it possible to compress FMCB and folder into something that these programs, like GameShark, will recognize? Basically the idea goes like this:
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