Objective-C/CocoaHttpServer - Trying to do a simple GET request with one parameter

Question

I'm trying to use the "CocoaHTTPServer" found at https://github.com/robbiehanson/CocoaHTTPServer. I have added it to my project, and now, if i type on my browser something like this: 192.168.3.114:45000 i receive an html page called index with a simple welcome message (this page is stored inside the default project). This is ok. It works correctly. What i need to understand now, is how can i for example do a simple GET request typing on the browser something like "192.168.3.114:52000/getElement" and receive on the browser a simple String. Can you please give me help? I don't know where i can configure or check this because there are some classes. I'm trying to study the HTTPConnection class but i'm going in confusion because i'm new on the objective-c programming. Thanks

Answer 1

You can do an NSURL request and then get the server response as an NSString:

NSString *URL = @"http://yoururlhere.com?var1=";
URL = [URL stringByAppendingString: yourvarstring];
NSData *dataURL =  [NSData dataWithContentsOfURL: [ NSURL URLWithString: URL]];

NSString *serverOutput = [[NSString alloc] initWithData:dataURL encoding: NSASCIIStringEncoding];
//Check if the server has any output
if([serverOutput length] == 0)
{
    //Do something
} else {
    //Do Something else
}

Answer 2

You have to use a custom HTTPConnection subclass

@interface MyHTTPConnection : HTTPConnection
...
@end

then you could do custom URL handling

@implementation MyHTTPConnection

    - (NSObject<HTTPResponse> *)httpResponseForMethod:(NSString *)method URI:(NSString *)path
    {
    HTTPLogTrace();

    if ([path isEqualToString:@"/getElement"])
    {
            NSData *data = ...
            HTTPDataResponse *response = [[HTTPDataResponse alloc] initWithData:data];
            return response;
    }

        // default behavior for all other paths  
    return [super httpResponseForMethod:method URI:path];
    }

@end

and the set HTTPServer connectionClass so that your server knows you want to handle the connections yourself

[httpServer setConnectionClass:[MyHTTPConnection class]];