Merge pull request #236 from openziti/increase-header-size

plorenz · web-flow · commit ee4278c00ab1 · 2026-03-09T17:49:08.000-04:00
Increase allowed hello message headers size to 16k from 4k. Fixes #235
diff --git a/message.go b/message.go
@@ -473,7 +473,7 @@ func readHelloV2(peer io.Reader) (*Message, error) {
 	}
 	headersLength := readUint32(messageSection[12:16])
 	bodyLength := readUint32(messageSection[16:20])
-	if headersLength > 4192 || bodyLength > 4192 {
+	if headersLength > 16384 || bodyLength > 4192 {
 		return nil, fmt.Errorf("hello message too big. header len: %v, body len: %v", headersLength, bodyLength)
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -473,7 +473,7 @@ func readHelloV2(peer io.Reader) (*Message, error) {`
`473`	`473`	`}`
`474`	`474`	`headersLength := readUint32(messageSection[12:16])`
`475`	`475`	`bodyLength := readUint32(messageSection[16:20])`
`476`		`- if headersLength > 4192 \|\| bodyLength > 4192 {`
	`476`	`+ if headersLength > 16384 \|\| bodyLength > 4192 {`
`477`	`477`	`return nil, fmt.Errorf("hello message too big. header len: %v, body len: %v", headersLength, bodyLength)`
`478`	`478`	`}`
`479`	`479`