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https://issues.apache.org/jira/browse/CXF-7767?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16529577#comment-16529577
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Freeman Fang commented on CXF-7767:
-----------------------------------
wrapped HttpContinueReadHandler around PathHandler
> Support 100-Continue in Undertow transport
> ------------------------------------------
>
> Key: CXF-7767
> URL: https://issues.apache.org/jira/browse/CXF-7767
> Project: CXF
> Issue Type: Improvement
> Components: Transports
> Affects Versions: 3.2.4
> Reporter: Willem Salembier
> Assignee: Freeman Fang
> Priority: Major
> Fix For: 3.2.6
>
>
> One of our clients always sends 'Expect: 100-continue' headers and expects
> the server to respond with status code 100 Continue before sending the
> payload of the request. With transport untertow, this is currently not
> supported (we see an additional delay of 2s per request)
> The issue can be resolved by wiring in the
> io.undertow.server.handlers.HttpContinueReadHandler.
> For example modifying these lines works:
> https://github.com/apache/cxf/blob/master/rt/transports/http-undertow/src/main/java/org/apache/cxf/transport/http_undertow/UndertowHTTPServerEngine.java#L211-L221
> {code}
> if (url.getPath().length() == 0) {
> result = result.setHandler(Handlers.trace(new
> HttpContinueReadHandler(undertowHTTPHandler)));
> } else {
> if (undertowHTTPHandler.isContextMatchExact()) {
> this.path.addExactPath(url.getPath(), new
> HttpContinueReadHandler(undertowHTTPHandler));
> } else {
> this.path.addPrefixPath(url.getPath(), new
> HttpContinueReadHandler(undertowHTTPHandler));
> }
> result = result.setHandler(this.wrapHandler(this.path));
> }
> {code}
> Alternative impl to integrate this handler in UndertowHTTPHandler.
> Also the config should really be set via cxf.xml.
> Test case:
> * Deploy a simple SOAP service using javax.xml.ws.Endpoint.publish
> * Configure SoapUI in preferences > HTTP Settings (Expect-Continue: true)
> * Call a SOAP operation
> 100-Continue is well supported in the jetty transport, but with netty we see
> a similar issue. With netty the server hangs and doesn't respond
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