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[JENKINS-69368] Github Plugin does not respect proxy setting

Open jenkins-infra-bot opened this issue 3 years ago • 0 comments

We are using Jenkins in an enterprise environment that requires using a proxy server to connect to our github server.

Scanning the repo fails with:

java.net.UnknownHostException: github.example.com: Name or service not known    
at java.base/java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)    
at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)    
at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1519)    
at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)    
at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1509)    
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1368)    
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1302)    
at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49)    
at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:164)    
at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:129)    
at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:71)    
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:205)    
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:106)    
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:74)    
at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:255)    
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$UnexpectedException.lambda$static$0(ObsoleteUrlFactory.java:1365)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)    
at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$OkHttpURLConnection.getResponse(ObsoleteUrlFactory.java:671)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$OkHttpURLConnection.getResponseCode(ObsoleteUrlFactory.java:702)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$DelegatingHttpsURLConnection.getResponseCode(ObsoleteUrlFactory.java:1064)    
at org.kohsuke.github.internal.GitHubConnectorHttpConnectorAdapter.send(GitHubConnectorHttpConnectorAdapter.java:87)    
at org.kohsuke.github.GitHubClient.sendRequest(GitHubClient.java:384) 

Using the script console with

InetAddress dnsInetAddress = InetAddress.getByName 'github.example.com'
//print IP address
println dnsInetAddress.hostAddress

also fails.

But the Git plugin works just fine. Also using curl github.example.com works as expected.
So for me it looks, like the proxy setting is not properly respected. Or maybe it would be respected, but the previous lookup fails, b/c that's not possible with the proxy and the plugin terminates at that point.

Maybe someone could clarify that?

Originally reported by benedikt_g_13, imported from: Github Plugin does not respect proxy setting
  • assignee: lanwen
  • status: Open
  • priority: Minor
  • component(s): github-plugin
  • label(s): github, jenkins, plugin
  • resolution: Unresolved
  • votes: 0
  • watchers: 1
  • imported: 2025-12-08
Raw content of original issue 
We are using Jenkins in an enterprise environment that requires using a proxy server to connect to our github server.



Scanning the repo fails with:




java.net.UnknownHostException: github.example.com: Name or service not known    
at java.base/java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)    
at java.base/java.net.InetAddress$PlatformNameService.lookupAllHostAddr(InetAddress.java:929)    
at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1519)    
at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:848)    
at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1509)    
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1368)    
at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1302)    
at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49)    
at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:164)    
at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:129)    
at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:71)    
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:205)    
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:106)    
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:74)    
at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:255)    
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:95)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:76)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$UnexpectedException.lambda$static$0(ObsoleteUrlFactory.java:1365)    
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:109)    
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:201)    
at okhttp3.internal.connection.RealCall.execute(RealCall.kt:154)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$OkHttpURLConnection.getResponse(ObsoleteUrlFactory.java:671)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$OkHttpURLConnection.getResponseCode(ObsoleteUrlFactory.java:702)    
at org.kohsuke.github.extras.okhttp3.ObsoleteUrlFactory$DelegatingHttpsURLConnection.getResponseCode(ObsoleteUrlFactory.java:1064)    
at org.kohsuke.github.internal.GitHubConnectorHttpConnectorAdapter.send(GitHubConnectorHttpConnectorAdapter.java:87)    
at org.kohsuke.github.GitHubClient.sendRequest(GitHubClient.java:384) 




Using the script console with




InetAddress dnsInetAddress = InetAddress.getByName 'github.example.com'
//print IP address
println dnsInetAddress.hostAddress





also fails.


But the Git plugin works just fine. Also using curl github.example.com works as expected. 
So for me it looks, like the proxy setting is not properly respected. Or maybe it would be respected, but the previous lookup fails, b/c that's not possible with the proxy and the plugin terminates at that point.


Maybe someone could clarify that?
environment 
Jenkins version: 2.346.2<br/>
Github-plugin version: 1.34.4, 1.34.5, 1.35<br/>
http_proxy, https_proxy: set<br/>
JAVA_OPTS: proxy setting applied<br/>
OS: Debian 11 in Docker container

jenkins-infra-bot avatar Aug 17 '22 12:08 jenkins-infra-bot