I am trying to send this POST request to the specified website in Objective-C, but know very little about HTML and how to format my request.
The address is: https://selfservice.mypurdue.purdue.edu/prod/bwckgens.p_proc_term_date if you want to see where I am getting this HTML source code from.
<FORM ACTION="/prod/bwckschd.p_get_crse_unsec" METHOD="POST">
<INPUT TYPE="hidden" NAME="term_in" VALUE="201320">
<INPUT TYPE="hidden" NAME="sel_subj" VALUE="CS">
<INPUT TYPE="hidden" NAME="sel_levl" VALUE="dummy">
<INPUT TYPE="hidden" NAME="sel_schd" VALUE="dummy">
<INPUT TYPE="hidden" NAME="sel_coll" VALUE="dummy">
<INPUT TYPE="hidden" NAME="sel_divs" VALUE="dummy">
<INPUT TYPE="hidden" NAME="sel_dept" VALUE="dummy">
<INPUT TYPE="hidden" NAME="sel_attr" VALUE="dummy">
</FORM>
I am trying to send a POST request to the address https://selfservice.mypurdue.purdue.edu/prod/bwckctlg.p_display_courses with the the field “term_in” equal to 201320 and the “sel_subj” field equal to “CS”, and the rest being dummy. How would I go about doing this?
This is what I have so far:
#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_get_crse_unsec"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageNotAllowed timeoutInterval:3.0];
[request setHTTPMethod:@"POST"];
NSString *args = @"term_in=201320&sel_subj=CS&sel_day=dummy&sel_schd=dummy&sel_insm=dummy&sel_camp=dummy&sel_levl=dummy&sel_sess=dummy&sel_instr=dummy&sel_ptrm=dummy&sel_attr=dummy";
NSData *requestBody = [args dataUsingEncoding:NSUTF8StringEncoding];
[request setValue:@"text/html" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:requestBody];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
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];
NSLog(@"%@", str);
}
-(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
My console shows me this output:
Succeeded! Received 213 bytes of data
2012-10-25 02:25:38.683 Purdue Course Finder[25844:c07] <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>410 Gone</title>
</head><body>
<h1>Gone</h1>
/prod/bwckschd.p_get_crse_unsechas been permanently removed from this server.</p>
</body></html>
Can someone help me figure out why this is not a valid request? If a value is set to dummy, should I not add it to the string? Is the string in an incorrect format with each value being suffixed with a &? Any suggestions? Can someone get me the URL of this POST request so I can modify my code accoringly?
Try it in this format,