Rechability of Local LAN Ip on iPhone/iPad?

i want to check if an Webserver on on local lan ip is reachable. I checked Apple's Rechability Sample, but this sample says all local lan ip's are reachable.

Any Ideas how to check this?



I made an workaround for this:

- (BOOL *) getOnlineState {
    BOOL *onlineState;
    NSURL *serverURL = [NSURL URLWithString:@""];
    NSURLRequest *request = [NSURLRequest requestWithURL:serverURL];
    NSURLResponse *response;
    NSError *error;
    NSData *receivedData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
    if (receivedData == nil) 
        onlineState = (BOOL *)NO;
        onlineState = (BOOL *)YES;
    return onlineState;

Need Your Help

ddply with fixed number of rows

r plyr

I want to break up my data by 'number of rows'. That is to say I want to send a fixed number of rows to my function and when I get to the end of the data frame (last chunk) I need to just send the ...