How to send a multi line string to URL - Objective C

Question

I have a Text View which will be used to input data on multiple lines. The string will then be posted to an URL to a php file and then to a MYSQL Database.

The problem i am having is that the string will not be send if i use multiple lines. I used the following to get around the fact that (Spaces) could not be sent via a URL:

hostStr = [hostStr stringByReplacingOccurrencesOfString:@" " withString:@"%20"];

Is there anything similar to this I can do to get the string to return with multiple lines?

Yes, for example as domain.com/addNote?Note=This Is A New Note\nContinue Down here. Something like this — Awais Hussain, Jan 07 '15 at 13:18
use this http://stackoverflow.com/questions/15749486/sending-an-http-post-request-on-ios — Yuyutsu, Jan 07 '15 at 13:50
@Yuyutsu That shows how to post, but is a poor answer because it doesn't contemplate percent escaping (which should be done anyway, but is critical for this particular question). See http://stackoverflow.com/a/22725563/1271826 for some percent escaping code. — Rob, Jan 07 '15 at 13:54

Marcin P · Answer 1 · 2015-01-08T07:07:32.940

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Have you tried [hostStr stringByAddingPercentEscapesUsingEncoding:] ?

edited Jan 08 '15 at 07:07

answered Jan 07 '15 at 13:23

Marcin P

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3

This is not adequate. It takes care of spaces and newline characters, but it won't percent escape other characters that need encoding (notably `+` or `&` would be problematic if they ever appeared in the string). – Rob Jan 07 '15 at 13:49
Good point. I think `[hostStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet alphanumericCharacterSet]]` would be better – Marcin P Jan 08 '15 at 07:06
Yep. Technically, [RFC 3986](http://tools.ietf.org/html/rfc3986) qualifies this and instructs us that the only characters that should never be percent escaped are the unreserved characters, include `alphanumericCharacterSet` plus "-", ".", "_", and "~". So I would advise adding those four character to the allowed characters set (though, in practice, it really doesn't matter). – Rob Jan 08 '15 at 12:54

How to send a multi line string to URL - Objective C

1 Answers1