How do I specify a http proxy to use when running a spring-boot fat war as a tomcat server?
I have tried the following which is not working.
java -jar my-application.war --http.proxyHost=localhost --http.proxyPort=3128 --https.proxyHost=localhost --https.proxyPort=3128
and
java -jar my-application.war -Dhttp.proxyHost=localhost -Dhttp.proxyPort=3128 -Dhttps.proxyHost=localhost -Dhttps.proxyPort=3128
I've found that I need -Dhttps.proxySet=true in order for the proxy config to actually be used.
Put the JVM options before -jar. This should work:
java -Dhttp.proxyHost=localhost -Dhttp.proxyPort=3128 -Dhttps.proxyHost=localhost -Dhttps.proxyPort=3128 -jar my-application.war
Explanation
According to java command-line documentation, the command's syntax is:
java [ options ] -jar file.jar [ arguments ]
The arguments are the args that'll be received in your main(String[] args). So, it's totally your responsibility to use them somehow. And if you forward them to spring using SpringApplication.run(MyApplication.class, args);, then you need to find documentation that says how spring uses args in the run method.
The options, however, are not sent to your app. One of their uses is to set what java calls system properties using -Dproperty=value. According to Java Networking and Proxies, setting, e.g., http.proxyHost property makes the JVM proxy all your http request through that host.
You may configure all property of REMOTE DEVTOOLS (RemoteDevToolsProperties) in application.properties.
spring.devtools.remote.context-path= # Context path used to handle the remote connection.
spring.devtools.remote.proxy.host= # The host of the proxy to use to connect to the remote application.
spring.devtools.remote.proxy.port= # The port of the proxy to use to connect to the remote application.
spring.devtools.remote.restart.enabled=true # Whether to enable remote restart.
spring.devtools.remote.secret= # A shared secret required to establish a connection (required to enable remote support).
spring.devtools.remote.secret-header-name=X-AUTH-TOKEN # HTTP header used to transfer the shared secret.
need to add for authenticating proxy server
-Dhttp.proxyUser=**username**
-Dhttp.proxyPassword=**password**
java -jar my-application.war -Dhttp.proxyHost localhost -Dhttp.proxyPort=3128 -Dhttps.proxyHost localhost -Dhttps.proxyPort=3128X-Forwarded-ForandX-Forwarded-Protoheaders, or customize your embedded Tomcat server by specifying theserver.tomcat.remote-ip-headerandserver.tomcat.protocol-headersettings. Also, make sure you haveserver.use-forward-headers=trueinapplication.properties. From docs.spring.io/spring-boot/docs/current/reference/html/…host, port, {username, password}. I have no control over the proxy server so can't configure custom headers. How would I use the above given my proxy is running onhttp://localhost:3128