I have the following code in objective c that is supposed to make a GET http request to my website which in turn will submit something into my MySQL database...
NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://www.website.com/VideoPush/plist/urlTransfer.php"]];
[request setHTTPMethod:#"GET"];
NSString *post =[[NSString alloc] initWithFormat:#"videoID=%#",videoURL];
[request setHTTPBody:[post dataUsingEncoding:NSUTF8StringEncoding]];
Note: I'm a total beginner to http requests with Objective c so I realize I could be missing something obvious...
Now if I run the following url in my browser...
http://www.website.com/VideoPush/plist/urlTransfer.php?videoID=hhklskdjsad
Then something gets entered into the database, but not when I'm using objective c. Also what is the difference between GET and POST when you make requests like this (since the user doesn't see the url anyways)?
ALSO: Am I allowed to pass a url (still a nsstring with /'s though) as the videoURL variable above
You've tried to set the body of a GET request, which makes no sense. What you probably want is:
NSString *urlString = [NSString stringWithFormat:#"http://www.website.com/VideoPush/plist/urlTransfer.php?videoID=%#", videoURL];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
... the rest of your method ...
You should probably go and have a read up about what a GET and a POST is and why I said it makes no sense to have a body in a GET request.
ALSO: Am I allowed to pass a url (still a nsstring with /'s though) as the videoURL variable above
No, you will need to URL encode anything in the query string. You can use CFURLCreateStringByAddingPercentEscapes to do this for you.
Related
I wish to send a very very long string(length of string is more than 10000) to the server and in return get the jSON response from the string.What is the best approach for the task. I am sending various parameters along with this very very long string.
Split down your long string to parts which can be send over one request. Create a json like this
{
"index":"0",
"length":"LENGTH_OF_STRING",
"string":"xsfsffwff.......",
//other json parameters
}
then you can send your string
The problem is that you're trying to put this all into a query parameter. Most servers have built-in limits for URLs, and for good reason.
There's nothing special about the body of an HTTP POST, so just send that up like you would anything else. Just make sure that you set the Content-Length header (since you know that; it might be covered by the HTTP library) and then just stream your data up. No need for any encoding or query params.
I don't know much about objective-c, but I'm sure there's a way to send data like this in an HTTP POST very simply. I've done this with Go and node.js, and both have simple ways of sending arbitrary data in a POST request body.
If you are using the ASI-Http classes , then you can send request like this
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:[WebService getAddPhoto]]];
[request addPostValue:[[imgArray objectAtIndex:i] valueForKey:#"vComments"] forKey:#"comment"];
NSData *imageData = UIImagePNGRepresentation([UIImage imageWithContentsOfFile:[[imgArray objectAtIndex:i] valueForKey:#"vPhoto"]]);
NSString *encodedString = [imageData base64EncodingWithLineLength:[imageData length]];
[request addPostValue:encodedString forKey:#"Photo"];
[request setDelegate:self];
[request startAsynchronous]
I want to POST 3 requests within same class with XML parser. I can manage to do only one request at a time. When I POST multiple requests, it says Parser Error. This is how I tried.
NSURL *url = [[NSURL alloc] initWithString:getAllFoodsURL];
NSMutableURLRequest *req = [[NSMutableURLRequest alloc] initWithURL:url];
NSString *paramDataString = [NSString stringWithString:
#"<GetNames><DeviceId>1234</DeviceId><UserId>200</UserId></GetNames>"];
[req addValue:#"application/xml" forHTTPHeaderField:#"content-type"];
[req setHTTPMethod:#"POST"];
NSData *paramData = [paramDataString dataUsingEncoding:NSUTF8StringEncoding];
[req setHTTPBody: paramData];
NSURLConnection *theConnection=[[NSURLConnection alloc]initWithRequest:req delegate:self];
if (theConnection) {
NSMutableData *data = [[NSMutableData alloc] init];
self.receivedData=data;
[data release];
}
I have used NSXMLParser delegates methods. After one request is completed(connection release), then I create another connection and do the same process for second request.
But it doesnot work.
I want to know, how to manage multiple requests with NSXMLParser?
If you can give me a code example, its highly appreciated.
I guess NSThread is what you are looking for.
But I am not sure as I am not much aware about that.
Note that NSXMLParser isn't involved in HTTP requests -- do you mean NSURLRequest instead? You'll need to make your requests separately, possibly using separate blocks, operations, or threads.
Once you've retrieved the data for each request, you'll need to use separate NSXMLParser objects for each. A single instance of NSXMLParser is tied to its XML data at initialization -- you can't reuse a parser. You can use the same delegate for all your xml parsers, and the delegate can use the first parameter to each of the xml parser delegate methods (i.e. parser) to know which parser is calling a given method.
I am trying to access a Drupal service that takes more than one argument. The method is views.get and the server I'm using is REST 6.x-2.0-beta3. I am retrieving data from the server for 0 or 1 arguments with no trouble. Any argument after the first, however, is simply ignored. I have tested the view on the Drupal site, and it limits results correctly for every argument passed.
I've come to the conclusion that my problem must be the formatting, but I've tried nearly everything I can think of, not to mention a dozen suggestions I've found while Googling for an answer. My code is below:
responseData = [[NSMutableData data] retain];
NSMutableString *httpBodyString =[[NSMutableString alloc] initWithString:#"method=views.get&view_name=apps&args=1&display_id=default"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:#"http://drupalserver.com/services/rest/service_views/get.json"]];
[request setHTTPMethod:#"POST"];
[request setHTTPBody:[httpBodyString dataUsingEncoding:NSUTF8StringEncoding]];
[httpBodyString release];
[[NSURLConnection alloc] initWithRequest:request delegate:self];
I have tried:
args=1,2
args=[1,2]
args="1,2"
args=["1","2"]
and several others along that vein. Does anyone know the proper way to do this?
You should considering using, https://github.com/workhabitinc/drupal-ios-sdk
I'm trying to use ASIFormDataRequest to send a photo image from my
iPhone app to my server.
When I do so, the server sends back an error
message saying, "must be an image file," implying that there is
something wrong with the formatting of my image. (Of course, that
might not be the problem...but it's a good place to start.) I know
there's no "problem," per se, on the server, because a previous
approach I used (non-ASIHTTPRequest-based) worked fine.
Here's my iPhone code:
ASIFormDataRequest* request = [ASIFormDataRequest requestWithURL:
[NSURL URLWithString:photoUploadURLString]];
request.username = self.username;
request.password = self.password;
[request setPostValue:self.place.placeId forKey:#"place_id"];
NSData* jpegImageData = UIImageJPEGRepresentation(self.photo,
PHOTO_JPEG_QUALITY);
NSString* filename = [NSString stringWithFormat:#"snapshot_%#_
%d.jpg", self.place.placeId, rand()];
[request setData:jpegImageData withFileName:filename
andContentType:#"image/jpeg" forKey:#"snapshot[image]"];
request.uploadProgressDelegate = self.progressView;
[request startSynchronous];
Anyone see anything wrong with this? (I'm fairly new to this stuff, so
there could be something obvious I'm missing.)
Thanks very much.
Have you ever try addData instead of setData, It worked on my solution.
[request addData:jpegImageData withFileName: filename andContentType:#"image/jpeg" forKey:#"photos"];
Edit: By the way, which server side are you using ?
Your problem might be inside of the your key forKey:#"snapshot[image]"] try to dummy variable key like forKey:#"mysnapshot"]
Hope this helps
I am pulling my hair out trying to conjure up the correct syntax to set the HTTP header information do a byte-range load from an HTTP server.
This is the offending method on NSMutableURLRequest
- (void)setValue:(NSString *)value forHTTPHeaderField:(NSString *)field
This is how I am using this method to load the first 512 byte of a URL request.
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"GET"];
[request setValue:#"0-512\r\n" forHTTPHeaderField:#"Range"];
So far it is ignored and I always receive the entire data payload. I just want the range of bytes specified (0 - 512). Can someone please relieve my headache?
Update:
I have used curl to confirm that my web server supports byte ranges thusly:
curl --range 0-2047 http://www.somewhere.com/humungodata.dat -o "foobar"
The file size of foobar is 2048
Cheers,
Doug
Problem solved.
By adding additional header fields the code immediately worked correctly. Why? Dunno. But it works:
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod:#"GET"];
[request setValue:#"keep-live" forHTTPHeaderField:#"Connection"];
[request setValue:#"300" forHTTPHeaderField:#"Keep-Alive"];
[request setValue:#"bytes=0-2047" forHTTPHeaderField:#"Range"];
Your original code was wrong in the setValue line, it should be #"bytes=0-512". In your followup, you used the correct string, so the other headers should not be needed.
What you have there should be the correct way to add a header value to a URL request, however i thought only posts got header values, maybe im wrong, have you tried doing this on other enviroments and gotten it to work? Maybe take out the \r\n?