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    <div class="moz-cite-prefix">On 6/5/21 8:51 AM, John Hoyt wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAE8sghTyU-JWzNrTFFRx0vOWqNnozsmUyVp0u7tAR-t_F0rFiA@mail.gmail.com">
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      <div dir="ltr">After staring at my backend's logs to try to verify
        that the recent mysql connection drop didn't remerge, I found
        these interesting errors in my backend log:<br>
        <div><br>
        </div>
        <div>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:48:53
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09eda00:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) 'OPTIONS ' is not a valid size prefix. 215 bytes
              pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:00
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09e7510:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) 'TNMP#004' is not a valid size prefix. 8 bytes
              pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:05
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09e7e80:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) '#003' is not a valid size prefix. 3 bytes
              pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:10
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09e77f0:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) 'DmdT' is not a valid size prefix. 15 bytes
              pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:15
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09f6f00:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) ':' is not a valid size prefix. 52 bytes pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:25
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09e8740:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) '#001' is not a valid size prefix. 167 bytes
              pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:30
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09f7e50:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) '' is not a valid size prefix. 82 bytes pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:35
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09f77c0:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) '' is not a valid size prefix. 10 bytes pending.</span></p>
          <p class="gmail-p1"
style="margin:0px;font-variant-numeric:normal;font-variant-east-asian:normal;font-stretch:normal;font-size:12px;line-height:normal;font-family:Monaco;color:rgb(242,242,242);background-color:rgba(0,0,0,0.85)"><span
              class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">Jun<span
                class="gmail-Apple-converted-space">  </span>4 18:49:41
              mythtv mythbackend: mythbackend[1396]: E
              MythSocketThread(58) mythsocket.cpp:853
              (ReadStringListReal) MythSocket(5583a09f05c0:58): Protocol
            </span><span class="gmail-s2"
              style="font-variant-ligatures:no-common-ligatures;color:rgb(180,36,25)">error:
              (par</span><span class="gmail-s1"
              style="font-variant-ligatures:no-common-ligatures">se
              failed) 'GIOP#001' is not a valid size prefix. 40 bytes
              pending.</span></p>
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        <div><br>
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        <div>Any thoughts on what might be causing them?</div>
        <div><br>
        </div>
        <div>I can trace the errors back to Oct 16 last year (could be
          sooner, but that's where my archived logs end) - meaning I was
          experiencing the errors on both fixes/31 before my upgrade to
          master (which occured March 6 2021).</div>
        <div><br>
        </div>
        <div>~John</div>
        <div>
        </div>
      </div>
    </blockquote>
    <p>I would guess that you have a hacker or some rogue process that
      is sending messages to your mythtv box. Is your port open to the
      internet? Port 6543 is normally the MythTV port. You can see these
      errors if you run telnet localhost 6534 and then type random junk
      into telnet. Each line of stuff you type will be reported as a
      protocol error in mythbackend (unless you by chance type a valid
      MythTV command :).</p>
    <p>Peter<br>
    </p>
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