<div><div dir="auto">Yutaka,</div><div dir="auto"><br></div><div dir="auto">I was not responding to your issue. I was sending one of my own to the mailing list.</div><div dir="auto"><br></div><div dir="auto">Thanks,</div><div dir="auto">Nate</div></div><div dir="auto"><br></div><div dir="auto"><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Jul 16, 2020 at 8:39 AM <<a href="mailto:quickfixn-request@lists.quickfixn.com">quickfixn-request@lists.quickfixn.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)">Send Quickfixn mailing list submissions to<br>
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Today's Topics:<br>
<br>
1. Re: FIX connection Logout/Login Problem (YUTAKA YOSHIDA)<br>
2. Quickfixn Connection Webpage after Upgrade (Nate Kershner)<br>
3. Re: Quickfixn Connection Webpage after Upgrade (YUTAKA YOSHIDA)<br>
<br>
<br>
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<br>
Message: 1<br>
Date: Thu, 16 Jul 2020 21:20:06 +0900<br>
From: YUTAKA YOSHIDA <<a href="mailto:ysdytk1973@gmail.com" target="_blank">ysdytk1973@gmail.com</a>><br>
To: "Mailing list for QuickFIX/n" <<a href="mailto:quickfixn@lists.quickfixn.com" target="_blank">quickfixn@lists.quickfixn.com</a>><br>
Subject: Re: {{Quickfixn}} FIX connection Logout/Login Problem<br>
Message-ID:<br>
<<a href="mailto:CACZgWbO2UHG%2BMFHaSQ0MYwefHpBMaOLFLvZb5xWSpcTeaTYxbA@mail.gmail.com" target="_blank">CACZgWbO2UHG+MFHaSQ0MYwefHpBMaOLFLvZb5xWSpcTeaTYxbA@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Thank you for your response.<br>
<br>
Could you provide me an example code?<br>
I have tried in several ways but this issue remains unresolved.<br>
I am attaching my quick fix log file.<br>
<br>
Best regards,<br>
Yutaka<br>
<br>
On Wed, Jul 15, 2020 at 11:16 PM Grant Birchmeier <<a href="mailto:gbirchmeier@connamara.com" target="_blank">gbirchmeier@connamara.com</a>><br>
wrote:<br>
<br>
> My strong suspicion guess is that you are doing too much work within the<br>
> OnMessage callback. (Or any callback, really, but probably OnMessage.)<br>
><br>
> For each message received, OnMessage(<type>) is called, and further<br>
> message reception is blocked until OnMessage() returns. So if OnMessage<br>
> takes too long, the queue eventually will back up and you will eventually<br>
> see message loss.<br>
><br>
> A common technique is to have OnMessage push the message into a work queue<br>
> and return instantly, while another thread consumes off the work queue and<br>
> processing them.<br>
><br>
> Does that make sense?<br>
><br>
><br>
><br>
><br>
><br>
> On Wed, Jul 15, 2020 at 6:09 AM YUTAKA YOSHIDA <<a href="mailto:ysdytk1973@gmail.com" target="_blank">ysdytk1973@gmail.com</a>><br>
> wrote:<br>
><br>
>> Hello everyone,<br>
>><br>
>> I am using Quickfixn for accessing LMAX.<br>
>> I have a serious problem now.<br>
>> During receiving the price updates from the server, logout/login repeats<br>
>> sometimes.<br>
>> LMAX said like this.<br>
>> ///////////////////////////////////////////////////////<br>
>><br>
>> If your software gets overwhelmed it will return a TCP Window size=0,<br>
>> this means that you?re not able to receive further messages at the moment,<br>
>> and the TCP transmission is halted until it can process the messages in its<br>
>> receive buffer.<br>
>><br>
>> TCP back pressure will result when your software is unable to process the<br>
>> TCP packets fast enough (can't keep up) so messages start to back up on our<br>
>> side awaiting being sent. If your software gets overwhelmed it will return<br>
>> a TCP Window size = 0 which means that there is no room to send anything<br>
>> more at this time and messages queue up awaiting the next available window<br>
>> size.<br>
>><br>
>> We can try reducing the amount of updates we are sending to you (I can<br>
>> see your account is currently set as 1000 updates / sec with 20 levels<br>
>> depth market data) or you can reduce the number of instruments you are<br>
>> subscribing to. Please also contact you bridge provider to look at this<br>
>> issue.<br>
>><br>
>> //////////////////////////////////////////////////////////////<br>
>><br>
>> To solve this issue, I did the following steps.<br>
>><br>
>> -I upgraded VPS.<br>
>><br>
>> -I reduced the number of instruments to subscribe to.<br>
>><br>
>> -I commented on codes related to file writing.<br>
>><br>
>> However, this issue remains.<br>
>><br>
>> I have some errors in the FIX log file.<br>
>><br>
>> I am attaching it.<br>
>><br>
>> Can you help me now?<br>
>> _______________________________________________<br>
>> Quickfixn mailing list<br>
>> <a href="mailto:Quickfixn@lists.quickfixn.com" target="_blank">Quickfixn@lists.quickfixn.com</a><br>
>> <a href="http://lists.quickfixn.com/listinfo.cgi/quickfixn-quickfixn.com" rel="noreferrer" target="_blank">http://lists.quickfixn.com/listinfo.cgi/quickfixn-quickfixn.com</a><br>
>><br>
><br>
><br>
> --<br>
> Grant Birchmeier<br>
> *Connamara Systems, LLC*<br>
> *Made-To-Measure Trading Solutions.*<br>
> Exactly what you need. No more. No less.<br>
> <a href="http://connamara.com" rel="noreferrer" target="_blank">http://connamara.com</a><br>
><br>
> This email, along with any attachments, is confidential. If you believe<br>
> you received this message in error, please contact the sender immediately<br>
> and delete all copies of the message. Thank you from Connamara Systems, LLC.<br>
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Message: 2<br>
Date: Thu, 16 Jul 2020 08:25:14 -0400<br>
From: Nate Kershner <<a href="mailto:nathaneleven@gmail.com" target="_blank">nathaneleven@gmail.com</a>><br>
To: <a href="mailto:quickfixn@lists.quickfixn.com" target="_blank">quickfixn@lists.quickfixn.com</a><br>
Subject: {{Quickfixn}} Quickfixn Connection Webpage after Upgrade<br>
Message-ID:<br>
<CADjps7HxAxPTcSRYu5=<a href="mailto:q57Mcyo81uEhJv-4iK4ANNau9sJfCOQ@mail.gmail.com" target="_blank">q57Mcyo81uEhJv-4iK4ANNau9sJfCOQ@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
We just went live with an upgrade to QuickFix/n (1.0.3 to 1.10). Obviously<br>
1.0.3 is a very old version, but I'm hoping someone can assist. In the old<br>
version, if you visited <a href="http://localhost" rel="noreferrer" target="_blank">http://localhost</a> on the server or http://<servername><br>
from another machine, it presented you with webpage with a list of<br>
connections and their sequence numbers with the ability to adjust them, but<br>
after upgrading it's no longer working (error message is Unable to<br>
connect). I don't see any actual webpage configured anywhere on the server<br>
we run our service on (IIS isn't even installed), so I'm pretty sure it was<br>
somehow served up by the engine itself? Any ideas if this is the case and<br>
if there's an equivalent in 1.10 or if I'll just need to build an<br>
equivalent myself?<br>
<br>
Thanks,<br>
Nate<br>
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<br>
Message: 3<br>
Date: Thu, 16 Jul 2020 21:39:30 +0900<br>
From: YUTAKA YOSHIDA <<a href="mailto:ysdytk1973@gmail.com" target="_blank">ysdytk1973@gmail.com</a>><br>
To: "Mailing list for QuickFIX/n" <<a href="mailto:quickfixn@lists.quickfixn.com" target="_blank">quickfixn@lists.quickfixn.com</a>><br>
Subject: Re: {{Quickfixn}} Quickfixn Connection Webpage after Upgrade<br>
Message-ID:<br>
<CACZgWbM3XvW_612dxzi--=<a href="mailto:4uP2dEjuEv4K-wF0yU9EpO7qr0bg@mail.gmail.com" target="_blank">4uP2dEjuEv4K-wF0yU9EpO7qr0bg@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="utf-8"<br>
<br>
Hi Nate,<br>
<br>
Thank you for your reply.<br>
<br>
But I don't understand your explanation.<br>
I am using the latest QuickFix/n (1.15)<br>
Is there something that I did wrong?<br>
<br>
Many thanks,<br>
Yutaka<br>
<br>
On Thu, Jul 16, 2020 at 9:25 PM Nate Kershner <<a href="mailto:nathaneleven@gmail.com" target="_blank">nathaneleven@gmail.com</a>><br>
wrote:<br>
<br>
> We just went live with an upgrade to QuickFix/n (1.0.3 to 1.10). Obviously<br>
> 1.0.3 is a very old version, but I'm hoping someone can assist. In the old<br>
> version, if you visited <a href="http://localhost" rel="noreferrer" target="_blank">http://localhost</a> on the server or http://<servername><br>
> from another machine, it presented you with webpage with a list of<br>
> connections and their sequence numbers with the ability to adjust them, but<br>
> after upgrading it's no longer working (error message is Unable to<br>
> connect). I don't see any actual webpage configured anywhere on the server<br>
> we run our service on (IIS isn't even installed), so I'm pretty sure it was<br>
> somehow served up by the engine itself? Any ideas if this is the case and<br>
> if there's an equivalent in 1.10 or if I'll just need to build an<br>
> equivalent myself?<br>
><br>
> Thanks,<br>
> Nate<br>
> _______________________________________________<br>
> Quickfixn mailing list<br>
> <a href="mailto:Quickfixn@lists.quickfixn.com" target="_blank">Quickfixn@lists.quickfixn.com</a><br>
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</blockquote></div></div>