Assume port hopping only in case of a missing endpoints json for obfs4-hop. The gateway IP and the cert json field in options substitute the missing endpoints json

1 files changed, 14 insertions, 6 deletions

diff --git a/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/HoppingConfig.java b/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/HoppingConfig.java
index e885166a..3780b7dc 100644
--- a/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/HoppingConfig.java
+++ b/app/src/main/java/se/leap/bitmaskclient/pluggableTransports/HoppingConfig.java
@@ -20,17 +20,25 @@ public class HoppingConfig {
 
     public HoppingConfig(boolean kcp,
                          String proxyAddr,
-                         Transport transport,
+                         Obfs4Options options,
                          int minHopSeconds,
                          int hopJitter) {
         this.kcp = kcp;
         this.proxyAddr = proxyAddr;
+        Transport transport = options.transport;
         Transport.Endpoint[] endpoints = transport.getOptions().getEndpoints();
-        this.remotes = new String[endpoints.length];
-        this.certs = new String[endpoints.length];
-        for (int i = 0; i < remotes.length; i++) {
-            remotes[i] = endpoints[i].getIp();
-            certs[i] = endpoints[i].getCert();
+        if (endpoints == null) {
+            // only port hopping, we assume the gateway IP as hopping PT's IP
+            this.remotes = new String[]{ options.gatewayIP };
+            this.certs = new String[] { transport.getOptions().getCert() };
+        } else {
+            // port+ip hopping
+            this.remotes = new String[endpoints.length];
+            this.certs = new String[endpoints.length];
+            for (int i = 0; i < remotes.length; i++) {
+                remotes[i] = endpoints[i].getIp();
+                certs[i] = endpoints[i].getCert();
+            }
         }
         this.portSeed = transport.getOptions().getPortSeed();
         this.portCount = transport.getOptions().getPortCount();