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PONSURLConnection GET and POST not working
 

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  1. PONSURLConnection GET and POST not working
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    <p>I am not getting the correct output from the server. The response I get back everytime is:</p> <blockquote> <p>Gone</p> <pre><code>/prod/bwckgens.p_proc_term_datehas been permanently removed from this server. </code></pre> </blockquote> <p>This is usually recieved when you just direct the web browser to the page <a href="https://selfservice.mypurdue.purdue.edu/prod/bwckgens.p_proc_term_date" rel="nofollow">here</a> instead of going through <a href="https://selfservice.mypurdue.purdue.edu/prod/bwckschd.p_disp_dyn_sched?" rel="nofollow">this</a> page first. This makes me come to the conclusion that a cookie isn't being saved, but I read in the documentation that this is all handled by the NSURLConnection object. Is there something I am doing wrong here?</p> <pre><code>#import "PCFViewController.h" @interface PCFViewController () @end NSMutableData *mutData; @implementation PCFViewController - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } - (IBAction)queryServer { NSURL *url = [NSURL URLWithString:@"https://selfservice.mypurdue.purdue.edu/prod/bwckschd.p_disp_dyn_sched"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:3.0]; //the reason I perform a GET here is just to get a cookie and communicate like a normal web browser, since directly doing a POST to the proper address isn't working [request setHTTPMethod:@"GET"]; [request setValue:@"text/html; charset=UTF-8" forHTTPHeaderField:@"Content-Type"]; NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if (connection) { mutData = [NSMutableData data]; } } - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSLog(@"Succeeded! Received %d bytes of data",[mutData length]); NSString *str = [[NSString alloc] initWithData:mutData encoding:NSUTF8StringEncoding]; //just to see the contents(for debugging) NSLog(@"%@", str); [self handleConnection:connection]; } -(void)handleConnection:(NSURLConnection *)connection { //this is the first step if ([@"/prod/bwckschd.p_disp_dyn_sched" isEqualToString:[[[connection originalRequest] URL] path]]) { //first request //POST NSURL *url = [NSURL URLWithString:@"https://selfservice.mypurdue.purdue.edu/prod/bwckgens.p_proc_term_date"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:3.0]; [request setHTTPMethod:@"POST"]; NSString *args = @"p_calling_proc=bwckschd.p_disp_dyn_sched&amp;p_term=201320"; NSData *requestBody = [args dataUsingEncoding:NSUTF8StringEncoding]; [request setHTTPBody:requestBody]; connection = [connection initWithRequest:request delegate:self]; [connection start]; if (connection) { mutData = [NSMutableData data]; } //second step. Here I send the list of classes(COMPUTER SCIENCE) I want to display as well as the term SPRING2013 }else if([@"/prod/bwckgens.p_proc_term_date" isEqualToString:[[[connection currentRequest] URL] path]]) { NSURL *url = [NSURL URLWithString:@"https://selfservice.mypurdue.purdue.edu/prod/bwckschd.p_get_crse_unsec"]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:3.0]; [request setHTTPMethod:@"POST"]; NSString *args = @"term_in=201320&amp;sel_subj=dummy&amp;sel_day=dummy&amp;sel_schd=dummy&amp;sel_insm=dummy&amp;sel_camp=dummy&amp;sel_levl=dummy&amp;sel_sess=dummy&amp;sel_instr=dummy&amp;sel_ptrm=dummy&amp;sel_attr=dummy&amp;sel_subj=CS&amp;sel_crse=dummy&amp;sel_title=dummy&amp;sel_schd=%25&amp;sel_from_cred=&amp;sel_to_cred=&amp;sel_camp=%25&amp;sel_ptrm=%25&amp;sel_instr=%25&amp;sel_sess=%25&amp;sel_attr=%25&amp;begin_hh=0&amp;begin_mi=0&amp;begin_ap=a&amp;end_hh=0&amp;end_mi=0&amp;end_ap=a"; NSData *requestBody = [args dataUsingEncoding:NSUTF8StringEncoding]; [request setHTTPBody:requestBody]; connection = [connection initWithRequest:request delegate:self]; [connection start]; if (connection) { mutData = [NSMutableData data]; } //the courses should be shown now I have to parse the data }else if([@"/prod/bwckschd.p_get_crse_unsec" isEqualToString:[[[connection currentRequest] URL] path]]) { } } -(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error { NSLog(@"%@\n", error.description); } - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { [mutData setLength:0]; NSLog(@"%@\n", response.description); } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [mutData appendData:data]; } @end </code></pre>
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