/**
* Connect to searchd server and update given attributes on given documents in given indexes.
* Sample code that will set group_id=123 where id=1 and group_id=456 where id=3:
*
*
* String[] attrs = new String[1];
*
* attrs[0] = “group_id”;
* long[][] values = new long[2][2];
*
* values[0] = new long[2]; values[0][0] = 1; values[0][1] = 123;
* values[1] = new long[2]; values[1][0] = 3; values[1][1] = 456;
*
* int res = cl.UpdateAttributes ( “test1″, attrs, values );
*
*
* @param index index name(s) to update; might be distributed
* @param attrs array with the names of the attributes to update
* @param values array of updates; each long[] entry must contains document ID
* in the first element, and all new attribute values in the following ones
* @return -1 on failure, amount of actually found and updated documents (might be 0) on success
*
* @throws SphinxException on invalid parameters
*/
public int UpdateAttributes ( String index, String[] attrs, long[][] values )
{
/* check args */
Debug.Assert ( !string.IsNullOrEmpty(index), “no index name provided” );
Debug.Assert ( attrs!=null && attrs.Length>0, “no attribute names provided” );
Debug.Assert ( values!=null && values.Length>0, “no update entries provided” );
for ( int i=0; i<values.Length; i++ )
{
Debug.Assert ( values[i]!=null, “update entry #” + i + ” is null” );
Debug.Assert ( values[i].Length == 1 + attrs.Length, “update entry #” + i + ” has wrong length” );
}

/* build and send request */
if (_client == null || !_client.Connected)
{
this.Connect();
}
if (_client == null) return -1;
StreamReader sr = new StreamReader(_client.GetStream());
BinaryWriter sw = new BinaryWriter(_client.GetStream());
BinaryWriter tsw = new BinaryWriter(new MemoryStream()); /* temp command buffer */
try
{
WriteToStream(sw, VER_MAJOR_PROTO);
WriteToStream(sw, (short)SEARCHD_COMMAND_UPDATE);
WriteToStream(sw, (short)VER_COMMAND_UPDATE);
this.WriteToStream(tsw, index);
this.WriteToStream(tsw, attrs.Length);
for (int i = 0; i< attrs.Length; i++)
{
this.WriteToStream(tsw, attrs[i]);
}

this.WriteToStream(tsw, values.Length);

for (int i = 0; i < values.Length; i++)
{
this.WriteToStream(tsw, values[i][0]); /* send docid as 64bit value */
for (int j = 1; j < values[i].Length; j++)
{
this.WriteToStream(tsw, (int)values[i][j]); /* send values as 32bit values; FIXME! what happens when they are over 2^31? */
}
}

this.WriteToStream(sw, (int)tsw.BaseStream.Length); // send the request size
sw.Write(((MemoryStream)tsw.BaseStream).ToArray());
sw.Flush();

} catch ( Exception e )
{
_error = “internal error: failed to build request: ” + e;
return -1;
}

/* get and parse response */
byte[] response = GetResponse(_client, VER_COMMAND_UPDATE);
if ( response == null )
return -1;

try
{
BinaryReader br = new BinaryReader(new MemoryStream(response));
return this.ReadInt32(br);
} catch ( Exception )
{
_error = “incomplete reply”;
return -1;
}
}

public static unsafe int FloatToInt32Bits(float value)
{
return *(((int*)&value));
}

public static unsafe float Int32FloatToBits(int value)
{
return *(((float*)&value));
}

I had change the port according to the server but getting error
“Connect: Read from socket failed: Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.”

Plz help…
and also can you please let me know how we can assure that whichever port i m using is the correct one?.

Thanks
Mohit