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<div dir="auto">How to check TCP keepalive from client and server?</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Users <users-bounces@lists.opensips.org> on behalf of olle@zaark.com <olle@zaark.com><br>
<b>Sent:</b> Thursday, May 2, 2024 10:47:23 PM<br>
<b>To:</b> 'OpenSIPS users mailling list' <users@lists.opensips.org><br>
<b>Subject:</b> Re: [OpenSIPS-Users] Send failed</font>
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<p class="x_MsoNormal"><span lang="EN-GB" style="font-size:11.0pt; font-family:"Calibri",sans-serif">Hi, I might add that it’s worth checking TCP keep alive from both client and server.</span></p>
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<p class="x_MsoNormal"><span lang="EN-GB" style="font-size:11.0pt; font-family:"Calibri",sans-serif">Olle Frimanson</span></p>
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<p class="x_MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif"> Users <users-bounces@lists.opensips.org>
<b>On Behalf Of </b>Ben Newlin<br>
<b>Sent:</b> den 2 maj 2024 16:21<br>
<b>To:</b> OpenSIPS users mailling list <Users@lists.opensips.org><br>
<b>Subject:</b> Re: [OpenSIPS-Users] Send failed</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:11.0pt">There are many different reasons for this error. With just this one line description and no more context it isn’t possible to say why it is occurring.</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:11.0pt">The most common cause of 477 errors is issues with the TCP/TLS connection to the far end. Have you tried capturing a trace of the call attempt? Have you verified your TCP/TLS settings are correct
and are aligned with what the far end expects? Have you verified the message is being sent to the correct remote target to begin with?</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:11.0pt; font-family:"Calibri",sans-serif; color:black">Ben Newlin</span><span lang="EN-US" style="font-size:11.0pt"></span></p>
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<p class="x_MsoNormal" style="margin-bottom:12.0pt"><b><span lang="EN-US" style="font-size:12.0pt; color:black">From:
</span></b><span lang="EN-US" style="font-size:12.0pt; color:black">Users <<a href="mailto:users-bounces@lists.opensips.org">users-bounces@lists.opensips.org</a>> on behalf of Prathibha B <<a href="mailto:prathibhab.tvm@gmail.com">prathibhab.tvm@gmail.com</a>><br>
<b>Date: </b>Thursday, May 2, 2024 at 8:56 AM<br>
<b>To: </b><a href="mailto:users@lists.opensips.org">users@lists.opensips.org</a> <<a href="mailto:Users@lists.opensips.org">Users@lists.opensips.org</a>><br>
<b>Subject: </b>Re: [OpenSIPS-Users] Send failed</span></p>
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<p class="x_MsoNormal"><b><span style="font-size:12.0pt; font-family:"Calibri",sans-serif; color:#B60000"> EXTERNAL EMAIL - Please use caution with links and attachments </span></b></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Can someone point me on how to resolve this issue?</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:12.0pt">On Wed, 1 May 2024 at 18:49, Prathibha B <<a href="mailto:prathibhab.tvm@gmail.com">prathibhab.tvm@gmail.com</a>> wrote:</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:12.0pt">How to solve this error- 477 send failed.</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:12.0pt">Regards,</span></p>
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<p class="x_MsoNormal"><span lang="EN-US" style="font-size:12.0pt">B.Prathibha</span></p>
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