I am trying to download a xyz.config file which is created using iPhone Configuration utlity, via code.
NSString *urlString = #"http://xxxxx:xxx/ms/servlet/ConfigServer?userid=xxx&pwd=xxx&emailid=xxxxx";
NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:urlString]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (theConnection) {
receivedData = [[NSMutableData data] retain];
} else {
// Inform the user that the connection failed.
}
Then, didReceiveData, didReceiveResponse are written. Finally,
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(#"Succeeded! Received %d bytes of data",[receivedData length]);
NSString *responseString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding];
NSLog(#"Response : %#", responseString );
// release the connection, and the data object
[receivedData release];
[connection release];
}
With the above code, i'm getting response as string of the complete configuration file. But my Aim to download this file as raw data, which will automatically launch device profile to ask for installing this profile.
NOTE: I am able to provide the same URL in Safari browser on the device, and download the
raw file directly to install it on the device. I don't want to use Safari browser to download it, it should be done via my communication code.
I also tried with ASIHTTPRequest like below, but unable to download that file directly from the URL via this code as well.
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setRequestMethod:#"GET"];
[request startSynchronous];
Please help!
Thank you.
The Mobile Safari browser app on the iOS has a lot more freedom than your app. Case in point, on the latest iOS 4.3, Mobile Safari has the Nitro JavaScript engine which boost 2x performance increase. But the UIWebView which is available to your app doesn't have that engine. Your app is in a sandbox, therefore, you cannot write outside of that box.
Related
I installed the WordPress blog on my localhost server and also made an iPhone app to browse the blog via rss. I tried to post a comment programmatically using this code.
#define post_url #"http://localhost/web-wp/wp-comments-post.php"
#define post_content #"comment_post_ID=%#&comment_parent=%#&author=%#&email=%#&comment=%#"
NSString *post_str = [NSString stringWithFormat:post_content, #"1", #"0", #"Viet", #"vietnt88#gmail.com", #"test. comment written on mobile"];
NSData *data = [post_str dataUsingEncoding:NSUTF8StringEncoding];
NSURL * url = [NSURL URLWithString:post_url];
NSMutableURLRequest *req = [[NSMutableURLRequest alloc] initWithURL:url];
[req setHTTPMethod:#"POST"];
[req setHTTPBody:data];
NSURLResponse *response;
NSError *err;
[NSURLConnection sendSynchronousRequest:req returningResponse:&response error:&err];
I need this code to work when the user is not logged in. How do I achieve that?
How can I post comment from iPhone?
First of all, if you use "localhost" from your code running on your iPhone, then "localhost" will refer to the iPhone not to your web server. Put there the IP of your server, if you have a public IP than that one otherwise connect your iPhone via WiFi to the same LAN as your local server and use the IP of that server (I guess it'll be something like 192.168...).
When do I actually get my response code 200 for a valid request for an image? Is it after all of the data has been downloaded to my browser or which ever device is requesting the image?
I am using the library http://allseeing-i.com/ASIHTTPRequest/ to download images in my iPad app and using the download directly to a file option and then deleting the file if it was a 404 error or any other status code than 200.
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setDownloadDestinationPath:#"/Users/ben/Desktop/my_file.jpg"];
Problem is partial responses seem to be getting saved during slow connections so I end up with blank or corrupt images.
I decided instead to save the data stream to disk only after I received a status code of 200:
NSURL *url = [NSURL URLWithString: [[NSString stringWithFormat:kProductImagesURL, fileName] stringByAppendingString:tStamp]];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setTimeOutSeconds:10];
[request startSynchronous];
int statusCode = [request responseStatusCode];
if (statusCode==200) {
NSData *responseData = [request responseData];
[responseData writeToFile:[savePath stringByReplacingOccurrencesOfString:#"%20" withString:#" "] atomically:YES];
}
I just want to make sure that the response code only comes back after the request has been completed and all of the data has been downloaded. I am 99% sure that is the case but can't afford another app release with an image bug like this in it.
There are two reasons you should probably consider switching to an asynchronous request. The first is, it frees up your main thread to interact with the user (even a modal spinner would be nice--otherwise it looks like your app has frozen).
Second, it gives you callbacks that only happen once the whole request is finished. I can't really explain only having gotten partial data with the code you showed, but I've never once had that problem using ASI's asynchronous methods.
I have the following code used to post data to a remote server:
NSString *urlStr = [[NSString alloc] initWithFormat: #"http://www.myserver.com/%#",program ];
NSString *postBody =[[NSString alloc] initWithFormat:#"uid=%#",parms];
NSMutableURLRequest *request;
NSData *postData = [postBody dataUsingEncoding:NSISOLatin1StringEncoding];
NSError *error;
NSURLResponse *response;
NSData *dataReply;
request = [NSMutableURLRequest requestWithURL: [NSURL URLWithString:urlStr]];
[request setHTTPMethod: #"POST"];
[request setHTTPBody:postData];
dataReply = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
serverResponse = (NSString *)[[NSString alloc] initWithData:dataReply encoding:NSUTF8StringEncoding];
[postBody release];
[urlStr release];
program is the php program to run on the server. parms is the string to be posted in the format:
\ntoken=12345
Here's the problem: This works fine from the simulator. It works fine on my 3gs development phone. It works fine on a beta tester's 3gs phone that I emailed the app to. It does NOT work fine on another beta tester's iPhone 4 (emailed to him the exact same provision file and ipa file). The POST call is made from the iPhone 4 to the server but no post body is passed. I log each of the calls to the server on the server. The post body is there for the 3gs phones, not for the 4 phone. There are no errors generated in the Apache logs.
Is there some difference between the two phone models that I need to account for? I have tried both http and https access with the same behavior. I don't currently have access to an iPhone 4 so any insight would be a great help.
The answer is not model related. It has to do with the name of the phone which is passed as a parameter to the server. The name contains an apostrophe as in Mike's iPhone.
I am a backend Rails developer of an API that services several iPhone clients. I'm not an iPhone dev.
I have a need to accept binary data (several image files in this case) from the client via a POST request to the API.
To get the file content (file metadata other than image type is not relevant here), what tools might be used by the iPhone developer? I've found ObjectiveResource (used by iPhone on Rails) and ASIHTTPRequest. In the pages I found for those, there's no indication of what form the uploaded file will have when the controller action is executed. Will it be a Ruby File object or Tempfile object? I don't control the iPhone code development, there are some cross-cultural communication difficulties there, and they haven't used those suggestions so far. If I can submit better information to them, I might be getting better data back.
The backend app is currently running Rails 2.3.10, and will soon (in the next few weeks) likely be converted into Rails 3.
Thanks,
Craig
ObjectiveResource does not natively support file uploads. Try instead using ASIHTTPRequest with this snippet:
NSURL *url = [NSURL URLWithString:#"http://localhost:3000/file"];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setPostValue:#"Sample" forKey:#"name"];
[request setFile:... forKey:#"file"];
[request startSynchronous];
For more details, see the example page here (sending data).
The post will be encoded as a standard multipart form post (just like if it came from an HTML form). If you are using paperclip to store your uploads, the magic will just happen!
Use JSON over HTTP
NSMutableURLRequest *request =
[[NSMutableURLRequest alloc] initWithURL: [NSURL URLWithString:urlStr]];
[request setHTTPMethod: #"POST"];
[request setValue:#"application/json; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
NSString* requestDataLengthString = [[NSString alloc] initWithFormat:#"%d", [jsonMessageStr length]];
[request setValue:requestDataLengthString forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/json" forHTTPHeaderField:#"Accept"];
[request setHTTPBody:jsonData];
NSURLConnection *theConnection =
[[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES];
Is there any way to spoof the user agent on Safari on the iPhone?
So for example, you would create an application on the iPhone that has the embedded Safari browser, however any website the user visits with this browser wouldn't know you were on Safari on the iPhone, it would think you are on something like Safari on a PC, or even IE/FireFox.
Thanks
Yes I think you could change this. It would require a bit of a work around to get it working.
You would need to manually manage all requests. By making your own data requests.
In this data request you can add a HTTPheader for User-Agent which will override the default headers.
NSMutableURLRequest* urlRequest = [[[NSMutableURLRequest alloc] initWithURL:requestURL] autorelease];
[urlRequest setHTTPMethod: #"POST"];
[urlRequest setHTTPBody: [nvpString dataUsingEncoding:NSUTF8StringEncoding]];
[urlRequest addValue:#"Your+User+Agent+String" forHTTPHeaderField:#"User-Agent"];
receivedData = [[NSMutableData alloc] retain];
[receivedData setLength:0];
[NSURLConnection connectionWithRequest: urlRequest delegate: self];
If you embed the Safari Web Browser in your app you can subscribe to its delegate methods. One of them will notify your application that safari would like to load a URL, this is where you catch this load and get the data your self.
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
now you put your code in here to do the data load.
Once the data has loaded. Give it the data string back to the webView. I have set "baseURL:nil" but you might have to correctly set this to maybe the correct domain for this app.
[webView loadHTMLString:newString baseURL:nil]