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title: Reading and Writing Request Headers and Bodies
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---
product: Omni Gateway Policy Development Kit (PDK)
version: 1.9
---

# Reading and Writing Request Headers and Bodies

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

Omni Gateway Policy Development Kit (PDK), provides two seperate ways to read and write headers and
bodies. Choose either depending on your use case:

- [Reading and Writing Request Headers and Bodies with Separate Event States](https://docs.mulesoft.com/pdk/1.9/policies-pdk-configure-features-headers-event):
  Use the event flow method when you:

  - Don’t need to read the request body and don’t want to buffer the entire payload.

  - Need to stream the request payload.

- [Reading and Writing Request Headers and Bodies with Stop Iteration](https://docs.mulesoft.com/pdk/1.9/policies-pdk-configure-features-headers-stop):
  Use the stop iteration method when:

  - Your policy must read and write headers and bodies at the same time.