# IOError: stream is closed or unusable on POST

**URL:** <https://discourse.julialang.org/t/ioerror-stream-is-closed-or-unusable-on-post/129859>\
**Category:** Web Stack\
**Tags:** question, http\
**Created:** [June 13, 2025, 12:06pm UTC](https://discourse.julialang.org/t/ioerror-stream-is-closed-or-unusable-on-post/129859 "2025-06-13T12:06:25Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ohmsweetohm1](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ohmsweetohm1/32/49126_2.png) [@ohmsweetohm1](https://discourse.julialang.org/u/ohmsweetohm1)\
**Post date:** [June 13, 2025, 12:06pm UTC](https://discourse.julialang.org/t/ioerror-stream-is-closed-or-unusable-on-post/129859/1 "2025-06-13T12:06:25Z")

</div>

I frequently get

```julia
 IOError: stream is closed or unusable

```

when trying to POST to an API with a pretty large body: `Content-Length: 406233`.

What can I do?