I2CP: Add PROP_GZIP

i2ptunnel: Disable I2CP gzip for HTTP server tunnels
i2psnark: Disable I2CP gzip

apps/i2psnark/java/src/org/klomp/snark/I2PSnarkUtil.java

@@ -295,6 +295,9 @@ public class I2PSnarkUtil {
                 opts.setProperty("i2p.streaming.answerPings", "false");
             if (opts.getProperty(I2PClient.PROP_SIGTYPE) == null)
                 opts.setProperty(I2PClient.PROP_SIGTYPE, "EdDSA_SHA512_Ed25519");
+            // assume compressed content
+            if (opts.getProperty(I2PClient.PROP_GZIP) == null)
+                opts.setProperty(I2PClient.PROP_GZIP, "false");
             _manager = I2PSocketManagerFactory.createManager(_i2cpHost, _i2cpPort, opts);
             if (_manager != null)
                 _startedTime = _context.clock().now();

apps/i2ptunnel/java/src/net/i2p/i2ptunnel/I2PTunnelHTTPServer.java

@@ -547,7 +547,7 @@ public class I2PTunnelHTTPServer extends I2PTunnelServer {
             // server, reads the response headers, rewriting to include Content-Encoding: x-i2p-gzip
             // if it was one of the Accept-Encoding: values, and gzip the payload       
             boolean allowGZIP = true;
-            String val = opts.getProperty("i2ptunnel.gzip");
+            String val = opts.getProperty(TunnelController.PROP_TUN_GZIP);
             if ( (val != null) && (!Boolean.parseBoolean(val)) ) 
                 allowGZIP = false;
             if (_log.shouldLog(Log.INFO))

apps/i2ptunnel/java/src/net/i2p/i2ptunnel/TunnelController.java

@@ -89,6 +89,8 @@ public class TunnelController implements Logging {
     public static final String PROP_FILTER = "filterDefinition";
     /** @since 0.9.42 */
     public static final String PROP_CONFIG_FILE = "configFile";
+    /** @since 0.9.46 */
+    public static final String PROP_TUN_GZIP = "i2ptunnel.gzip";
 
     /**
      * all of these are @since 0.9.33 (moved from TunnelConfig)
@@ -139,6 +141,7 @@ public class TunnelController implements Logging {
 
     /** @since 0.9.34 */
     private static final String OPT_LIMIT_ACTION = PFX_OPTION + PROP_LIMIT_ACTION;
+    private static final String OPT_I2CP_GZIP = PFX_OPTION + I2PClient.PROP_GZIP;
 
     /** all of these @since 0.9.14 */
     public static final String TYPE_CONNECT = "connectclient";
@@ -834,6 +837,15 @@ public class TunnelController implements Logging {
             if (type.equals(TYPE_HTTP_SERVER)) {
                 if (!_config.containsKey(OPT_LIMIT_ACTION))
                     _config.setProperty(OPT_LIMIT_ACTION, "http");
+                String tgzip = _config.getProperty(PROP_TUN_GZIP);
+                if (tgzip == null || Boolean.valueOf(tgzip)) {
+                    // Web server will gzip
+                    // If web server doesn't gzip, I2PTunnelHTTPServer will.
+                    // Streaming will force gzip on first packet for header compression,
+                    // regardless of this setting
+                    if (!_config.containsKey(OPT_I2CP_GZIP))
+                        _config.setProperty(OPT_I2CP_GZIP, "false");
+                }
             }
             if (type.equals(TYPE_HTTP_SERVER) || type.equals(TYPE_STREAMR_SERVER)) {
                 if (!_config.containsKey(OPT_BUNDLE_REPLY))

core/java/src/net/i2p/client/I2PClient.java

@@ -70,6 +70,8 @@ public interface I2PClient {
     public static final String PROP_USER = "i2cp.username";
     /** @since 0.9.44, was protected in I2PSessionImpl */
     public static final String PROP_PW = "i2cp.password";
+    /** @since 0.9.46 */
+    public static final String PROP_GZIP = "i2cp.gzip";
 
     /**
      *  7654

core/java/src/net/i2p/client/impl/I2PSessionImpl2.java

@@ -188,7 +188,7 @@ class I2PSessionImpl2 extends I2PSessionImpl {
     protected boolean shouldCompress(int size) {
          if (size <= DONT_COMPRESS_SIZE)
              return false;
-         String p = getOptions().getProperty("i2cp.gzip");
+         String p = getOptions().getProperty(I2PClient.PROP_GZIP);
          if (p != null)
              return Boolean.parseBoolean(p);
          return SHOULD_COMPRESS;