Error code 111: write error

[Moritz]

Hello,

I'd like to use OpenDHT and for transmiting the XML I use XmlRpc++.

But the Following code:
"
    dht = new XmlRpcClient( "128.83.122.179", 5850, 0, false );
    unsigned char trans_key[100];
    CSHA1 transe;
    transe.Update( (unsigned char*)key.data() , key.size());
    transe.Final();
    transe.GetHash( trans_key );
   
    XmlRpcValue param_array;
    param_array.setSize( 5 );
    param_array[0] = XmlRpcValue("kpprog");
    param_array[1] = XmlRpcValue("xmlrpc++");
    param_array[2] = XmlRpcValue(trans_key);
    param_array[3] = XmlRpcValue((char *)value.data());
    param_array[4] = XmlRpcValue(604800);
    qDebug("vorput");
    if( !dht->execute("put", param_array, result) )
        qDebug("Error");
    qDebug("nachput");
"
gives out:
vorput
Error in XmlRpcClient::writeRequest: write error (error 111).
Error
nachput

Does someone know what this mean? The Connection to the Server is correct(when i change the IP another error appears, that it couldnt connect to server).
The server is from the official opendht server list:
http://opendht.org/servers.txt

thx for help,
mollitz

[Chris Morley]

Errno 111 is ECONNREFUSED ("Connection refused") - ie, no socket is accepting connections at that address.

According to the OpenDHT User's Guide, the XML-RPC service is at port 5851.
You are using port 5850.

[Moritz]

thx for the quick answer the put is working now! (so the opendht server list is wrong)

    unsigned char trans_key[100];
    unsigned char bytearray[100];
    XmlRpcValue result;
    XmlRpcValue param_array;
    CSHA1 transe;
    transe.Update( (unsigned char*)key.data() , key.size());
    transe.Final();
    transe.GetHash( trans_key );
   
    param_array.setSize( 5 );
    param_array[0] = XmlRpcValue("kpprog");
    param_array[1] = XmlRpcValue("xmlrpc++");
    param_array[2] = XmlRpcValue(trans_key);
    param_array[3] = XmlRpcValue(100); //kp
    param_array[4] = XmlRpcValue(bytearray);
    qDebug("vorrequest");
    if( !dht->execute("get", param_array, result) )
        qDebug("Error");
    qDebug() << result.size();
    QString str(std::string(result[0]).c_str());
    qDebug("nachrequest");

but theres another error, i cant find the reason for. the source code above gives the following:

vorrequest
2
terminate called after throwing an instance of 'XmlRpc::XmlRpcException'

do you know the reason ?

thx, mollitz

[Chris Morley]

You probably want to inspect the result type before using it. In general, to debug problems you should catch and print XmlRpcExceptions, enable the debug output in xmlrpc++, step through the code in a debugger, etc.