Stream: git-wasmtime

Topic: wasmtime / issue #14190 Wasmtime 48.0.0 does not add `Hos...

view this post on Zulip Wasmtime GitHub notifications bot (Aug 21 2026 at 19:51):

tomasol opened issue #14190:

When using a p2 component, default_send_request is no longer adds a Host header to outbound HTTP/1.1 requests.
This is a regression from Wasmtime 47.0.3, appears to originate in #13812 .

Test Case

test.diff.txt

Steps to Reproduce

  1. Apply the test patch to Wasmtime 48.0.0.
  2. Run cargo test -p wasmtime-wasi-http --test all p2_http_outbound_request_get
  3. Inspect the received request.

Expected Results

The tests pass because a Host header matching the request authority is added to the outgoing request.

Actual Results

The tests fail because the Host header is not sent.

Versions and Environment

Wasmtime version: 48.0.0

view this post on Zulip Wasmtime GitHub notifications bot (Aug 21 2026 at 19:51):

tomasol added the bug label to Issue #14190.

view this post on Zulip Wasmtime GitHub notifications bot (Aug 21 2026 at 21:09):

tomasol closed issue #14190:

When using a p2 component, default_send_request is no longer adds a Host header to outbound HTTP/1.1 requests.
This is a regression from Wasmtime 47.0.3, appears to originate in #13812 .

Test Case

test.diff.txt

Steps to Reproduce

  1. Apply the test patch to Wasmtime 48.0.0.
  2. Run cargo test -p wasmtime-wasi-http --test all p2_http_outbound_request_get
  3. Inspect the received request.

Expected Results

The tests pass because a Host header matching the request authority is added to the outgoing request.

Actual Results

The tests fail because the Host header is not sent.

Versions and Environment

Wasmtime version: 48.0.0

view this post on Zulip Wasmtime GitHub notifications bot (Aug 21 2026 at 21:09):

tomasol commented on issue #14190:

Already fixed by https://github.com/bytecodealliance/wasmtime/pull/14167

Last updated: Aug 30 2026 at 10:08 UTC