diff options
Diffstat (limited to 'src/reverse_proxy.rs')
| -rw-r--r-- | src/reverse_proxy.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/reverse_proxy.rs b/src/reverse_proxy.rs index 99a7c98..dc45869 100644 --- a/src/reverse_proxy.rs +++ b/src/reverse_proxy.rs @@ -52,8 +52,12 @@ fn copy_upgrade_headers( old_headers: &HeaderMap<HeaderValue>, new_headers: &mut HeaderMap<HeaderValue>, ) -> Result<()> { + // The Connection header is stripped as it is a hop header that we are not supposed to proxy. + // However, it might also contain an Upgrade directive, e.g. for Websockets: + // when that happen, we do want to preserve that directive. if let Some(conn) = old_headers.get(header::CONNECTION) { - if conn.to_str()?.to_lowercase() == "upgrade" { + let conn_str = conn.to_str()?.to_lowercase(); + if conn_str.split(',').map(str::trim).any(|x| x == "upgrade") { if let Some(upgrade) = old_headers.get(header::UPGRADE) { new_headers.insert(header::CONNECTION, "Upgrade".try_into()?); new_headers.insert(header::UPGRADE, upgrade.clone()); |