# Malformed CPE response

**URL:** <https://forum.genieacs.com/t/malformed-cpe-response/7432>\
**Category:** Question\
**Created:** [July 10, 2026, 7:40pm UTC](https://forum.genieacs.com/t/malformed-cpe-response/7432 "2026-07-10T19:40:28Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![samr](https://avatars.discourse-cdn.com/v4/letter/s/a9adbd/32.png) [@samr](https://forum.genieacs.com/u/samr)\
**Post date:** [July 10, 2026, 7:40pm UTC](https://forum.genieacs.com/t/malformed-cpe-response/7432/1 "2026-07-10T19:40:28Z")

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When I summon a specific CPE (IPAccess 3g access point), the response has a malformed HTTP header. The date does not contain the key, it just has a date (not preceded with ‘Date:’). This causes GenieACS to reject the response. I don’t think the date header is required, so is there a way to have GenieACS ignore the error? It’s unlikely I will be able to get an update to the radio.

 ![image](https://canada1.discourse-cdn.com/flex035/uploads/genieacs/original/2X/6/6fff0ff2ac554999e9093f1c09b256234396fdd6.png)

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<div class="post-metadata">

**Author:** ![akcoder](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/akcoder/32/11_2.png) [@akcoder](https://forum.genieacs.com/u/akcoder)\
**Post date:** [July 10, 2026, 11:29pm UTC](https://forum.genieacs.com/t/malformed-cpe-response/7432/2 "2026-07-10T23:29:07Z")

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The problem is the header is fundamentally broken. You need to put a proxy in front of that to fix the header.

You don’t specify if this is when the ACS is connecting to the `ConnectionRequestUrl` of the CPE, or when the CPE is POSTing to the ACS.

If the Issue is CPE → ACS, then I would use HAProxy with `option accept-invalid-http-request`.

If the issue is ACS → CPE, you may still be able to use HAProxy, thats outside of my wheel house.

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<div class="post-metadata">

**Author:** ![samr](https://avatars.discourse-cdn.com/v4/letter/s/a9adbd/32.png) [@samr](https://forum.genieacs.com/u/samr)\
**Post date:** [July 13, 2026, 2:34pm UTC](https://forum.genieacs.com/t/malformed-cpe-response/7432/3 "2026-07-13T14:34:57Z")

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When you ask the ACS to summon the CPE, it does a HTTP GET to the CPE, the response to the GET is malformed. It’s a case where the client/server roles have been reversed, the ACS has become the client and the CPE the server. I don’t know if a reverse proxy can be configured to handle this situation.

 ![image](https://canada1.discourse-cdn.com/flex035/uploads/genieacs/original/2X/9/912cbcc471d68d80678281c13ecb23acb1d3acea.png)