Bad redirect URL when using Archiva through HTTP reverse proxy

....
[DEBUG] Using transporter WagonTransporter with priority -1.0 for https://archiva.example.org/repository/example-snapshots/
[DEBUG] Using connector BasicRepositoryConnector with priority 0.0 for https://archiva.example.org/repository/example-snapshots/ with username=..., password=...
[DEBUG] CookieSpec selected: compatibility
[DEBUG] Connection request: [route: {s}->https://archiva.example.org:443][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 40]
[DEBUG] Connection leased: [id: 1][route: {s}->https://archiva.example.org:443][total kept alive: 0; route allocated: 1 of 20; total allocated: 1 of 40]
[DEBUG] Opening connection {s}->https://archiva.example.org:443
[DEBUG] Connecting to archiva.example.org/...:443
[DEBUG] Connection established 192.168.0.2:38974<->...:443
[DEBUG] Executing request GET /repository/example-snapshots/org/example/my-artifact/0.2.0-SNAPSHOT/my-artifact-0.2.0-SNAPSHOT.jar HTTP/1.1
.....
[DEBUG] http-outgoing-1 >> GET /repository/example-snapshots/org/example/my-artifact/0.2.0-SNAPSHOT/my-artifact-0.2.0-SNAPSHOT.jar HTTP/1.1
[DEBUG] http-outgoing-1 >> Cache-control: no-cache
[DEBUG] http-outgoing-1 >> Cache-store: no-store
[DEBUG] http-outgoing-1 >> Pragma: no-cache
[DEBUG] http-outgoing-1 >> Expires: 0
[DEBUG] http-outgoing-1 >> Accept-Encoding: gzip
[DEBUG] http-outgoing-1 >> User-Agent: Aether
[DEBUG] http-outgoing-1 >> User-Agent: Aether
[DEBUG] http-outgoing-1 >> Host: archiva.example.org
[DEBUG] http-outgoing-1 >> Connection: Keep-Alive
[DEBUG] http-outgoing-1 >> Authorization: Basic ...
....
[DEBUG] http-outgoing-1 << HTTP/1.1 302 Found
[DEBUG] http-outgoing-1 << Date: Mon, 03 Oct 2016 14:26:38 GMT
[DEBUG] http-outgoing-1 << Set-Cookie: JSESSIONID=...;Path=/
[DEBUG] http-outgoing-1 << Expires: Thu, 01 Jan 1970 00:00:00 GMT
[DEBUG] http-outgoing-1 << Location: http://archiva.example.org/repository/example-snapshots/org/example/my-artifact/0.2.0-SNAPSHOT/my-artifact-0.2.0-20161003.123319-4.jar
[DEBUG] http-outgoing-1 << Connection: close
[DEBUG] http-outgoing-1 << Server: Jetty(8.1.14.v20131031)
[DEBUG] Authentication succeeded
[DEBUG] Caching 'basic' auth scheme for https://archiva.example.org:443
[DEBUG] Cookie accepted [JSESSIONID="...", version:0, domain:archiva.example.org, path:/, expiry:null]
[DEBUG] Redirect requested to location 'http://archiva.example.org/repository/example-snapshots/org/example/my-artifact/0.2.0-SNAPSHOT/my-artifact-0.2.0-20161003.123319-4.jar'
[DEBUG] Resetting target auth state
[DEBUG] Redirecting to 'http://archiva.example.org/repository/example-snapshots/org/example/my-artifact/0.2.0-SNAPSHOT/my-artifact-0.2.0-20161003.123319-4.jar' via {}->http://archiva.example.org:80
[DEBUG] http-outgoing-1: Shutdown connection
[DEBUG] Connection discarded
[DEBUG] http-outgoing-1: Close connection
[DEBUG] Connection released: [id: 1][route: {s}->https://archiva.example.org:443][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 40]
[DEBUG] CookieSpec selected: compatibility
[DEBUG] Cookie [version: 0][name: JSESSIONID][value: ...][domain: archiva.example.org][path: /][expiry: null] match [archiva.example.org:80/repository/example-snapshots/org/example/my-artifact/0.2.0-SNAPSHOT/my-artifact-0.2.0-20161003.123319-4.jar]
[DEBUG] Connection request: [route: {}->http://archiva.example.org:80][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 40]
[DEBUG] Connection leased: [id: 2][route: {}->http://archiva.example.org:80][total kept alive: 0; route allocated: 1 of 20; total allocated: 1 of 40]
[DEBUG] Opening connection {}->http://archiva.example.org:80
[DEBUG] Connecting to archiva.example.org/213.239.215.151:80
[DEBUG] http-outgoing-2: Shutdown connection
[DEBUG] Connection discarded
[DEBUG] http-outgoing-2: Close connection
[DEBUG] Connection released: [id: 2][route: {}->http://archiva.example.org:80][total kept alive: 0; route allocated: 0 of 20; total allocated: 0 of 40]
[WARNING] Error resolving artifactorg.example:my-artifact:jar:0.2.0-SNAPSHOT:Could not transfer artifact org.example:my-artifact:jar:0.2.0-SNAPSHOT from/to example-snapshots (https://archiva.example.org/repository/example-snapshots/): Connect to archiva.example.org:80 [archiva.example.org/213.239.215.151] failed: Connection refused
shaded.org.eclipse.aether.resolution.ArtifactResolutionException: Could not transfer artifact org.example:my-artifact:jar:0.2.0-SNAPSHOT from/to example-snapshots (https://archiva.example.org/repository/example-snapshots/): Connect to archiva.example.org:80 [archiva.example.org/213.239.215.151] failed: Connection refused
        at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
        at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
        at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
        at shaded.org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveArtifact(DefaultRepositorySystem.java:294)
        at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:615)
        at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:570)
        at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:548)
        at org.ops4j.pax.url.mvn.internal.AetherBasedResolver.resolve(AetherBasedResolver.java:523)
        at org.apache.karaf.features.internal.download.impl.MavenDownloadTask.download(MavenDownloadTask.java:34)
        at org.apache.karaf.features.internal.download.impl.AbstractRetryableDownloadTask.run(AbstractRetryableDownloadTask.java:58)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: shaded.org.eclipse.aether.transfer.ArtifactTransferException: Could not transfer artifact org.example:my-artifact:jar:0.2.0-SNAPSHOT from/to example-snapshots (https://archiva.example.org/repository/example-snapshots/): Connect to archiva.example.org:80 [archiva.example.org/213.239.215.151] failed: Connection refused
        at shaded.org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed(ArtifactTransportListener.java:43)
        at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:355)
        at shaded.org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run(RunnableErrorForwarder.java:67)
        at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute(BasicRepositoryConnector.java:581)
        at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector.get(BasicRepositoryConnector.java:249)
        at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:520)
        at shaded.org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:421)
        ... 16 more
Caused by: shaded.org.apache.maven.wagon.TransferFailedException: Connect to archiva.example.org:80 [archiva.example.org/213.239.215.151] failed: Connection refused
        at shaded.org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:1085)
        at shaded.org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:977)
        at shaded.org.apache.maven.wagon.StreamWagon.getInputStream(StreamWagon.java:116)
        at shaded.org.apache.maven.wagon.StreamWagon.getIfNewer(StreamWagon.java:88)
        at shaded.org.apache.maven.wagon.StreamWagon.get(StreamWagon.java:61)
        at shaded.org.eclipse.aether.transport.wagon.WagonTransporter$GetTaskRunner.run(WagonTransporter.java:560)
        at shaded.org.eclipse.aether.transport.wagon.WagonTransporter.execute(WagonTransporter.java:427)
        at shaded.org.eclipse.aether.transport.wagon.WagonTransporter.get(WagonTransporter.java:404)
        at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$GetTaskRunner.runTask(BasicRepositoryConnector.java:447)
        at shaded.org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run(BasicRepositoryConnector.java:350)
        ... 21 more
Caused by: shaded.org.apache.http.conn.HttpHostConnectException: Connect to archiva.example.org:80 [archiva.example.org/213.239.215.151] failed: Connection refused
        at shaded.org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:140)
        at shaded.org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:318)
        at shaded.org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363)
        at shaded.org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219)
        at shaded.org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
        at shaded.org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
        at shaded.org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
        at shaded.org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
        at shaded.org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
        at org.ops4j.pax.url.mvn.internal.wagon.ConfigurableHttpWagon.execute(ConfigurableHttpWagon.java:142)
        at shaded.org.apache.maven.wagon.providers.http.AbstractHttpClientWagon.fillInputData(AbstractHttpClientWagon.java:1000)
        ... 30 more
Caused by: java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
        at java.net.Socket.connect(Socket.java:589)
        at shaded.org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:72)
        at shaded.org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:123)
        ... 40 more
[INFO] --------------------------------------------------------------------
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