NumberFormatException: For input string: "534+ (khtml, like gecko) bingpreview/1.0"

[thomaskiesl]

Description of the bug

Same/similar issue as #20784

Expected behavior

Error in the logfile:

2025-01-13 07:56:15,705 ERROR | http-nio-18443-exec-27 | com.vaadin.flow.shared.BrowserDetails | Browser engine version parsing failed for: mozilla/5.0 (windows nt 6.1; wow64) applewebkit/534+ (khtml, like gecko) bingpreview/1.0b java.lang.NumberFormatException: For input string: "534+ (khtml, like gecko) bingpreview/1.0" at java.base/jdk.internal.math.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2054) at java.base/jdk.internal.math.FloatingDecimal.parseFloat(FloatingDecimal.java:122) at java.base/java.lang.Float.parseFloat(Float.java:476) at com.vaadin.flow.shared.BrowserDetails.<init>(BrowserDetails.java:124) at com.vaadin.flow.server.WebBrowser$1.<init>(WebBrowser.java:70) at com.vaadin.flow.server.WebBrowser.<init>(WebBrowser.java:70) at com.vaadin.flow.server.VaadinService.createAndRegisterSession(VaadinService.java:1015) at com.vaadin.flow.server.VaadinService.doFindOrCreateVaadinSession(VaadinService.java:979) at com.vaadin.flow.server.VaadinService.findOrCreateVaadinSession(VaadinService.java:921) at com.vaadin.flow.server.VaadinService.findVaadinSession(VaadinService.java:760) at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1658) at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:398) at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:106) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:195) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:164) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:140) at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108) at org.springframework.security.web.FilterChainProxy.lambda$doFilterInternal$3(FilterChainProxy.java:231) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:365) at org.springframework.security.web.access.intercept.AuthorizationFilter.doFilter(AuthorizationFilter.java:101) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:126) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:120) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:100) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:374) at

Minimal reproducible example

Since Vaadin 24.6.0

Versions

• Vaadin / Flow version: 24.6.1
• Java version: 17
• OS version: CentOS

[caalador]

Seems it's from BingPreview for Windows 8 app? As the latest agent they give is a little different

from Bing crawlers
BingPreview generates page snapshots for Bing. You can find more details about BingPreview here. Note that BingPreview has "desktop" and "mobile" variants.

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm) Chrome/W.X.Y.Z Safari/537.36
	
Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Mobile Safari/537.36  (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)

[knoobie]

OT: Now that Browser "parsing" is not really needed anymore to determine usability of flow.. I'm wondering if the log message should be lowered to e.g. INFO without an exception.. it isn't really harmful and can create a lot of noise.