# Problem with using gradle through an enterprise proxy !

**URL:** <https://discuss.gradle.org/t/problem-with-using-gradle-through-an-enterprise-proxy/26829>\
**Category:** Help/Discuss\
**Created:** [May 4, 2018, 3:51pm UTC](https://discuss.gradle.org/t/problem-with-using-gradle-through-an-enterprise-proxy/26829 "2018-05-04T15:51:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![alexandrenavarro](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/alexandrenavarro/32/6934_2.png) [@alexandrenavarro](https://discuss.gradle.org/u/alexandrenavarro)\
**Post date:** [May 4, 2018, 3:51pm UTC](https://discuss.gradle.org/t/problem-with-using-gradle-through-an-enterprise-proxy/26829/1 "2018-05-04T15:51:22Z")

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Hi,

I wanted to migrate from maven to gradle (4.7) in my firm. We have to use a proxy with authentication (ActiveDirectory with domain EUR) to retrieve plugins / dependencies …

1. When tried this command

./gradlew -Dhttp.proxyHost=proxy-mkt.int.world.socgen -Dhttp.proxyPort=8080 -Dhttps.proxyHost=proxy-mkt.int.world.socgen -Dhttps.proxyPort=8080 -Dhttp.proxyUser=EUR/anavarro -Dhttps.proxyUser=EUR/anavarro -Dhttp.proxyPassword=passwordToReplace -Dhttps.proxyPassword=passwordToReplace build --stacktrace --info --debug

I can download the gradle binary from internat, but I had an error in gradle to retrieve plugins and dependencies

The error : No valid credentials provided (Mechanism level: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt))

But when I digged in the log, gradle tries to use different schemes, [Negotiate, Kerberos, NTLM, CredSSP, Digest, Basic]

it failed with Kerberos but it seems succeeded with NTLM

14:06:42.079 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Generating response to an authentication challenge using ntlm scheme  
14:06:42.161 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Authentication succeeded

and just after when it tries to request the url, there is a 500 error even though when I can get the resource in my favorite navigator.

14:06:42.177 [DEBUG] [org.apache.http.impl.conn.PoolingHttpClientConnectionManager] Connection released: [id: 4][route: {tls}-\>http://proxy-mkt.int.world.socgen:8080-\>[https://plugins.gradle.org:443](https://plugins.gradle.org:443)][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 20]  
14:06:42.177 [INFO] [org.gradle.internal.resource.transport.http.HttpClientHelper] Failed to get resource: HEAD. [HTTP HTTP/1.1 500 Internal Server Error: [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)]  
14:06:42.177 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationExecutor] Completing Build operation ‘Metadata of [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)’  
14:06:42.177 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationExecutor] Build operation ‘Metadata of [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)’ completed

Did I miss something in the configuration of my proxy or there is a bug when you use proxy with authentication when kerberos failed but NTLM works in gradle ?

1. In order to bypass the proxy, I tried to use in internal nexus maven repository hosted in my firm.  
I succeeded by setting my internal repository in the build.gradle.kts and setting the internal repository settings.gradle.kts for the plugins.  
In my point of view, it is a bad practise, it should not be set in the project file (not linked to the project but the environment) but in another file shared between the different projects (like in ~/.gradle). I tried to set settings.gradle or in gradle.properties without success.  
Is there a way to set the proxy repositories for dependencies and plugins somewhere in the ~/.gradle directory? If yes, how?

Thanks in advance, don’t hesitate to tell me if you want to test some parameter, I will test in my firm for the first points.

PS : the interesting logs :

14:06:37.458 [DEBUG] [org.gradle.internal.resource.transport.http.HttpResourceAccessor] Constructing external resource metadata: [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)  
14:06:37.458 [DEBUG] [org.gradle.internal.resource.transport.http.HttpClientHelper] Performing HTTP HEAD: [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)  
14:06:37.459 [DEBUG] [org.gradle.internal.resource.transport.http.HttpClientConfigurer] Using Credentials [username: EUR/anavarro] and NTLM Credentials [user: anavarro, domain: EUR, workstation: FR07154114L] for authenticating against ‘proxy-mkt.int.world.socgen:8080’ using NTLM  
14:06:37.460 [DEBUG] [org.gradle.internal.resource.transport.http.HttpClientConfigurer] Using Credentials [username: EUR/anavarro] for authenticating against ‘proxy-mkt.int.world.socgen:8080’ using null  
14:06:37.460 [DEBUG] [org.gradle.internal.resource.transport.http.HttpClientConfigurer] Using Credentials [username: EUR/anavarro] and NTLM Credentials [user: anavarro, domain: EUR, workstation: FR07154114L] for authenticating against ‘proxy-mkt.int.world.socgen:8080’ using NTLM  
14:06:37.460 [DEBUG] [org.gradle.internal.resource.transport.http.HttpClientConfigurer] Using Credentials [username: EUR/anavarro] for authenticating against ‘proxy-mkt.int.world.socgen:8080’ using null  
14:06:37.460 [DEBUG] [org.apache.http.client.protocol.RequestAddCookies] CookieSpec selected: default  
14:06:37.460 [DEBUG] [org.apache.http.client.protocol.RequestAuthCache] Auth cache not set in the context  
14:06:37.460 [DEBUG] [org.apache.http.impl.conn.PoolingHttpClientConnectionManager] Connection request: [route: {tls}-\>http://proxy-mkt.int.world.socgen:8080-\>[https://plugins.gradle.org:443](https://plugins.gradle.org:443)][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 20]  
14:06:37.460 [DEBUG] [org.apache.http.impl.conn.PoolingHttpClientConnectionManager] Connection leased: [id: 4][route: {tls}-\>http://proxy-mkt.int.world.socgen:8080-\>[https://plugins.gradle.org:443](https://plugins.gradle.org:443)][total kept alive: 0; route allocated: 1 of 20; total allocated: 1 of 20]  
14:06:37.460 [DEBUG] [org.apache.http.impl.execchain.MainClientExec] Opening connection {tls}-\>http://proxy-mkt.int.world.socgen:8080-\>[https://plugins.gradle.org:443](https://plugins.gradle.org:443)  
14:06:37.504 [DEBUG] [org.apache.http.impl.conn.DefaultHttpClientConnectionOperator] Connecting to proxy-mkt.int.world.socgen/192.168.205.75:8080  
14:06:37.530 [DEBUG] [org.apache.http.impl.conn.DefaultHttpClientConnectionOperator] Connection established 192.22.112.138:58790\<-\>192.168.205.75:8080  
14:06:37.555 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Authentication required  
14:06:37.555 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] proxy-mkt.int.world.socgen:8080 requested authentication  
14:06:37.555 [DEBUG] [org.apache.http.impl.client.ProxyAuthenticationStrategy] Authentication schemes in the order of preference: [Negotiate, Kerberos, NTLM, CredSSP, Digest, Basic]  
14:06:37.555 [DEBUG] [org.apache.http.impl.auth.SPNegoScheme] Received challenge ‘’ from the auth server  
14:06:37.555 [DEBUG] [org.apache.http.impl.client.ProxyAuthenticationStrategy] Challenge for Kerberos authentication scheme not available  
14:06:37.555 [DEBUG] [org.apache.http.impl.client.ProxyAuthenticationStrategy] Challenge for CredSSP authentication scheme not available  
14:06:37.555 [DEBUG] [org.apache.http.impl.client.ProxyAuthenticationStrategy] Challenge for Digest authentication scheme not available  
14:06:37.556 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Selected authentication options: [NEGOTIATE, NTLM, BASIC [complete=true]]  
14:06:37.556 [DEBUG] [org.apache.http.impl.conn.DefaultManagedHttpClientConnection] http-outgoing-4: Close connection  
14:06:37.556 [DEBUG] [org.apache.http.impl.conn.DefaultHttpClientConnectionOperator] Connecting to proxy-mkt.int.world.socgen/192.168.205.75:8080  
14:06:37.577 [DEBUG] [org.apache.http.impl.conn.DefaultHttpClientConnectionOperator] Connection established 192.22.112.138:58791\<-\>192.168.205.75:8080  
14:06:37.577 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Generating response to an authentication challenge using Negotiate scheme  
14:06:42.078 [DEBUG] [org.apache.http.impl.auth.SPNegoScheme] init proxy-mkt.int.world.socgen  
14:06:42.078 [WARN] [org.apache.http.impl.auth.HttpAuthenticator] NEGOTIATE authentication error: No valid credentials provided (Mechanism level: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt))  
14:06:42.079 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Generating response to an authentication challenge using ntlm scheme  
14:06:42.161 [DEBUG] [org.apache.http.impl.auth.HttpAuthenticator] Authentication succeeded  
14:06:42.177 [DEBUG] [org.apache.http.impl.conn.DefaultManagedHttpClientConnection] http-outgoing-4: Close connection  
14:06:42.177 [DEBUG] [org.apache.http.impl.execchain.MainClientExec] CONNECT refused by proxy: HTTP/1.1 500 Internal Server Error  
14:06:42.177 [DEBUG] [org.apache.http.impl.execchain.MainClientExec] Connection discarded  
14:06:42.177 [DEBUG] [org.apache.http.impl.conn.PoolingHttpClientConnectionManager] Connection released: [id: 4][route: {tls}-\>http://proxy-mkt.int.world.socgen:8080-\>[https://plugins.gradle.org:443](https://plugins.gradle.org:443)][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 20]  
14:06:42.177 [INFO] [org.gradle.internal.resource.transport.http.HttpClientHelper] Failed to get resource: HEAD. [HTTP HTTP/1.1 500 Internal Server Error: [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)]  
14:06:42.177 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationExecutor] Completing Build operation ‘Metadata of [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)’  
14:06:42.177 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationExecutor] Build operation ‘Metadata of [https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom](https://plugins.gradle.org/m2/org/sonarqube/org.sonarqube.gradle.plugin/2.6.2/org.sonarqube.gradle.plugin-2.6.2.pom)’ completed  
14:06:42.181 [DEBUG] [org.gradle.api.internal.artifacts.ivyservice.resolveengine.oldresult.TransientConfigurationResultsBuilder] Flushing resolved configuration data in Binary store in C:\Users\anavarro\AppData\Local\Temp\gradle2869880512420732607.bin. Wrote root 2.  
14:06:42.183 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationExecutor] Completing Build operation ‘Resolve dependencies of detachedConfiguration1’  
14:06:42.184 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationExecutor] Build operation ‘Resolve dependencies of detachedConfiguration1’ completed

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<div class="post-metadata">

**Author:** ![alexandrenavarro](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/alexandrenavarro/32/6934_2.png) [@alexandrenavarro](https://discuss.gradle.org/u/alexandrenavarro)\
**Post date:** [May 18, 2018, 8:26am UTC](https://discuss.gradle.org/t/problem-with-using-gradle-through-an-enterprise-proxy/26829/2 "2018-05-18T08:26:41Z")

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I created a bug (I think it is a bug [https://github.com/gradle/gradle/issues/5454](https://github.com/gradle/gradle/issues/5454))

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**Author:** ![axeladigo](https://avatars.discourse-cdn.com/v4/letter/a/e5b9ba/32.png) [@axeladigo](https://discuss.gradle.org/u/axeladigo)\
**Post date:** [May 23, 2018, 12:51pm UTC](https://discuss.gradle.org/t/problem-with-using-gradle-through-an-enterprise-proxy/26829/3 "2018-05-23T12:51:13Z")

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I also faced the same issue. Could you guys, please, help us fix the issue. While searching i have noticed there are a lot of people in the situation.