[OpenDHT-Users] put_removable not working with Ruby

[Sean Rhea]

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On May 1, 2006, at 12:35 AM, Alyed Tzompa wrote:
> I'm having problems making a "put_removable" (actually not even a  
> "put" works for me) to openDHT. I'm using Ruby 1.8.4-16 and get the  
> following message:
>
> java.lang.NoSuchMethodException: bamboo.dht.Gateway 
> $XmlRpcPutRemovableHandler.put_removable(java.lang.String,  
> java.lang.String, java.lang.String, java.lang.String, int,  
> java.lang.String, java.lang.String, java.net.InetSocketAddress,  
> bamboo.util.Curry$Thunk1)

The function that should be being called is:

public class XmlRpcPutRemovableHandler {
         public void put_removable (byte [] key_bytes, byte [] value,
                 String hash_alg, byte [] secret_hash, int ttl_sec,
                 String application, String user_agent,
                 InetSocketAddress client, Thunk1<Object> result_cb) {
             ...
         }
};

Note the byte[]'s where the exception shows strings.  My guess is  
that your calls to Base64.encode are not enough to get Ruby's XML RPC  
client to encode data with <Base64> tags; i.e., it's sending the base  
64 strings, but enclosed in <String> tags instead.

I don't know Ruby, but this guess should be easy to verify with a  
packet trace.

Sean

> --------------------------------------
> #code extract
>
> dhtServer = XMLRPC::Client.new("169.229.50.15","/",5851)
> dhtKey64 = Base64.encode64(dhtKey)
> dhtValue64 = Base64.encode64(dhtValue)
>
> begin
>
> dhtStatus = dhtServer.call 
> ("put_removable",dhtKey64,dhtValue64,"SHA",secret.toSha, 
> 60.to_i,"my_app")
>   rescue XMLRPC::FaultException => error
>   puts error.faultCode
>   puts error.faultString
>
> end
> ----------------------------------
-- 
           The Law of Unintended Consequences:  for every action,
            there is an excellent chance of producing an opposite
                   and totally disproportionate reaction.
                              -- Clyde Haberman




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