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    Home Unlabelled CoD Warzone | PSA - always jump off the roof, never descend the elevator

    CoD Warzone | PSA - always jump off the roof, never descend the elevator

    April 23, 2020

    CoD Warzone | PSA - always jump off the roof, never descend the elevator

    PSA - always jump off the roof, never descend the elevator

    Posted: 23 Apr 2020 08:57 AM PDT

    Networking details I found out with Wireshark. Possibly an issue with handling packets out of order.

    Posted: 23 Apr 2020 06:06 AM PDT

    When I started playing Warzone one of the first things I noticed were the server issues. The servers were laggy and people were skipping around. I quickly found out about the internal statistics in the options and to my surprise the UI showed packet loss values of over 100%.

    This of course is not possible and I wanted to investigate what is the real packet loss value. The game does not allow you to run Wireshark (or pcap) on the same computer. I guess that is kind of a security measurement. I routed the traffic through another computer and run the network analysis in there. I ended up writing a small parser for the game data that counts the real packet loss values of the last 1000 packets .

    So here are some details that I have picked up:

    1. First of all, the servers do send packets to the client (tick rate) at about 21 hz intervals. My guess is that their simulation step is exactly 48 ms long.
    2. The servers (or at least their public IP addresses) are all over the place and hosted by multiple different companies. I have seen Blizzard, Amazon, Google cloud, Host Europe GmbH, UK2.net and multiple other IP addresses of the servers. (In Europe)
    3. Some hosts work just fine even during the high traffic and some servers do not work at all.
    4. Even if there is no packet loss sometimes the game does not run well. Maybe the servers do not have enough CPU power to calculate all simulations. I have no proof of the cause of course, but the packet loss can be 0 and the game is not really playable.
    5. Sometimes the data packets are split into two and sent at the same step. This is not inherently wrong even though the internet seems to think so. Would you rather not have this data at all?

    There seems to be an issue with the split packets with some hosts. The game really does not seem to like when the packets arrive out of order. Sometimes if the packet is split into two the smaller packet arrives 0-0.5 ms before the full size (1250 bytes) packet. The game does show weird packet loss percentages at this case.

    This is an example from yesterday, the Server IP is owned by Choopa LLC. The sequence number is from their proprietary internal packet frame. Also the data length is from their frame and is a bit smaller than the UDP payload. It might be that they can handle this situation (by having a buffer of 1 for example) but I doubt that based on the bad gaming experience.

    Server IP Timestamp (delta ms) seqno data payload 173.199.67.5 1587583123,038 ( 48,4), seq: 8631, len: 438, Calc:( 584 elements): average delta: 47,779 ms (20,930 hz) 173.199.67.5 1587583123,038 ( 0,4), seq: 8630, len: 1250. 173.199.67.5 1587583123,086 ( 48,0), seq: 8633, len: 228, Calc:( 584 elements): average delta: 47,784 ms (20,928 hz) 173.199.67.5 1587583123,086 ( 0,5), seq: 8632, len: 1250.

    TLDR: The servers are most likely rented from 100 different places, some work better than others. There might be an interesting networking issue with the split packet handling.

    submitted by /u/A_Agno
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    Landed back from the Gulag with just a uzi and wiped a 4 man camp squad

    Posted: 23 Apr 2020 07:16 AM PDT

    Sorry guy, I use this subreddit too.

    Posted: 22 Apr 2020 06:55 PM PDT

    Don‘t you take my Heli!!!!

    Posted: 23 Apr 2020 08:11 AM PDT

    Friend out for a smoke. Gas is closing in. I had to imorovise.

    Posted: 23 Apr 2020 12:14 PM PDT

    What If Warzone had a Night-Time ( Illustrated )

    Posted: 23 Apr 2020 01:12 PM PDT

    My friends call me “the Riley Reid of Warzone”

    Posted: 23 Apr 2020 09:11 AM PDT

    It's like we are playing in a completely different server

    Posted: 23 Apr 2020 05:51 AM PDT

    Every Time I Take The Stairs

    Posted: 23 Apr 2020 04:34 PM PDT

    How to survive the gas in style

    Posted: 23 Apr 2020 08:11 AM PDT

    Thank god for a panic cluster strike (apologies for my begs of reviving)

    Posted: 23 Apr 2020 10:16 AM PDT

    You're never safe with a half-assed claymore

    Posted: 23 Apr 2020 07:28 AM PDT

    When they line up perfectly ����

    Posted: 22 Apr 2020 10:49 PM PDT

    No fly zone

    Posted: 23 Apr 2020 09:59 AM PDT

    TIL - we have communism here.

    Posted: 23 Apr 2020 12:41 PM PDT

    Can we have a setting to Auto-Pickup Tactical and Lethal Equipment when the slots are empty at the start of Warzone matches?

    Posted: 23 Apr 2020 03:55 PM PDT

    We don't auto-pick up guns in the beginning of the Warzone because we already have pistols equipped, so that makes sense why we have to click/press to grab other weapons.

    The thing is that we don't start with any tactical or lethal equipment for Warzone so there should be an option to be able to auto-pickup any tactical and lethal equipment we first encounter since those slots are empty.

    It might not be a big deal but when I don't have any tactical or lethal equipment on me and run over them, I have to double back to actually click/press to equip them since I forget you don't auto-pickup those items up yet we auto-pickup armor shards.

    submitted by /u/KevGuy378
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    First game of Warzone and this is how I die...

    Posted: 23 Apr 2020 10:55 AM PDT

    why do BR QUADS squad mates want to play alone

    Posted: 23 Apr 2020 03:03 PM PDT

    whenever i play br quads there's always one guy who never follows the rest of the squad, goes off on his own and ignores us the whole time. why???? go on solos if you wanna be alone!! like, all the of us in a car, drive all the way to the other guy and he completely ignores us and doesn't get in the car even though he sees us there like right in front of him. it's so annoying. if anybody reading this does this, why do you go on br quads???

    submitted by /u/lh_032
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    By far the funniest rage I’ve ever heard over the headset. This kid was mad to say the least.

    Posted: 23 Apr 2020 04:03 PM PDT

    I love Spotter

    Posted: 22 Apr 2020 08:45 PM PDT

    Guess you could say I got the DROP on him.

    Posted: 23 Apr 2020 10:38 AM PDT

    When you're trying to browse reddit during the warmup and someone wont leave you alone.

    Posted: 23 Apr 2020 06:34 AM PDT

    Wonderful!

    Posted: 23 Apr 2020 06:13 AM PDT
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