No more stacktraces on broken pipes

Author: Brutus5000

src/main/java/com/faforever/api/error/GlobalControllerExceptionHandler.java

@@ -1,6 +1,7 @@
 package com.faforever.api.error;
 
 import lombok.extern.slf4j.Slf4j;
+import org.apache.catalina.connector.ClientAbortException;
 import org.springframework.http.HttpStatus;
 import org.springframework.security.access.AccessDeniedException;
 import org.springframework.security.authentication.InsufficientAuthenticationException;
@@ -105,6 +106,11 @@ public ErrorResponse processAccessDeniedException(Throwable ex) throws MissingSe
     return response;
   }
 
+  @ExceptionHandler(ClientAbortException.class)
+  public void warn(Throwable ex) {
+    log.warn("Client aborted connection: {}", ex.getMessage());
+  }
+
   @ExceptionHandler(Exception.class)
   @ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
   @ResponseBody