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Bug
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Resolution: Done
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Blocker
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7.0.0.DR6, 7.0.0.DR7
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None
According to specification [1] HTTP2-Settings should be encoded using base64url encoding, which uses as last two characters - and _ [2]. Undertow instead uses + and / which results in undertow failing to parse the HTTP2-Settings and thus connection not being established [3] when HTTP2-Settings Header contains one of those two characters.
[1] http://tools.ietf.org/html/rfc7540#page-9
[2] https://tools.ietf.org/html/rfc4648#section-5
[3]
12:45:10,868 ERROR [io.undertow.request] (default I/O-1) Undertow request failed HttpServerExchange{ GET /}: java.io.IOException: Invalid base64 character encountered: 95
at io.undertow.util.FlexBase64$Decoder.nextByte(FlexBase64.java:881)
at io.undertow.util.FlexBase64$Decoder.nextByte(FlexBase64.java:848)
at io.undertow.util.FlexBase64$Decoder.decode(FlexBase64.java:1122)
at io.undertow.util.FlexBase64$Decoder.decode(FlexBase64.java:1179)
at io.undertow.util.FlexBase64$Decoder.decode(FlexBase64.java:1245)
at io.undertow.util.FlexBase64$Decoder.access$500(FlexBase64.java:819)
at io.undertow.util.FlexBase64.decode(FlexBase64.java:193)
at io.undertow.server.protocol.http2.Http2UpgradeHandler.handleRequest(Http2UpgradeHandler.java:56)
at io.undertow.server.Connectors.executeRootHandler(Connectors.java:199)
at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:227)
at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:128)
at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:143)
at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:90)
at io.undertow.server.protocol.http.HttpOpenListener.handleEvent(HttpOpenListener.java:49)
at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:291)
at org.xnio.ChannelListeners$10.handleEvent(ChannelListeners.java:286)
at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
at org.xnio.nio.NioTcpServerHandle.handleReady(NioTcpServerHandle.java:53)
at org.xnio.nio.WorkerThread.run(WorkerThread.java:539)
- is cloned by
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- Resolved
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