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Issue The Ktor Date feature injects a Date header using RFC 1123 formatting. Internally it relies on HttpDate , which always emits a GMT string, converting any supplied ZonedDateTime to UTC before formatting. Unresolved Decision There is no documented option to preserve a regional time zone or customize the formatter. Developers who need to expose local time
Vert.x Web’s DateHeaderHandler parses the HTTP Date header only when the value matches the RFC1123 format in GMT (e.g., Tue, 15 Nov 1994 08:12:31 GMT ). A header with a non‑GMT offset, such as Tue, 15 Nov 1994 08:12:31 +0200 , results in a parsing exception. Developers must drop the header or implement a custom handler using java.time.DateTimeFormatter to ap
When building a Vert.x HTTP application, developers must supply the Date header as an RFC‑1123 formatted string. Vert.x validates this value in HttpServerResponseImpl.putDateHeader and throws java.lang.IllegalArgumentException with the message "Invalid date format" if the string does not match the expected pattern. Because Vert.x does not provide a built‑in
vertx