gistfile1.m

OAConsumer *consumer = [[OAConsumer alloc] initWithKey:"consumer_key" 
                                                secret:"consumer_secret"];
OAMutableURLRequest *oauthrequest = 
                       [[OAMutableURLRequest alloc] initWithURL:"request_url"                
                                                       consumer:consumer 
                                                          token:token 
                                                          realm:nil                      
                                              signatureProvider:[[OAHMAC_SHA1SignatureProvider alloc]init]];

[oauthrequest setHTTPMethod:@"http_method"];
[oauthrequest prepare];