I have a php file on my server that takes two argument and register my users.Can any one tell me the easiest way to send request to that gile and get response?
**My php file returns integer value like 1 for successful registration.2 For User exists.
You can use the NSURLConnection with NSMutableURLRequest or NSURLRequest
The class that you make the request in should implement this code.
-(void)yourMethod
{
// assume your append is a string of format ?key1=value1&key2=value2
NSString * urlString = [NSString stringWithFormat:#"https://www.stackoverflow.com/myPhpFile.php%#", append];
urlRequest = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:urlString]];
urlConnection = [NSURLConnection connectionWithRequest:urlRequest delegate:self];
[urlRequest release];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
NSString * string = [[NSString alloc] initWithData:data encoding:
NSASCIIStringEncoding];
// check string for successful registration
[string release];
}
You don't need to use https if your site does not have an SSL certificate.
Related
I am trying to access protected resources on a Django site using NSURLConnection , OAuth2 Bearer token and HTTPS. I receive a token, which I then attach either to a GET parameter, POST parameter or header. I can access those URL:s which respond to GET parameter. But when I try to access urls using POST, the server returns me a 403 with a custom error message saying there is no header/post parameter containing the token. I have tried several solutions and HTTP libraries. This method uses AFNetworking, I tried it. We even changed the authorization to accept an alternative header due to warnings that apple does not like the modifying of "Authorization" header. My current code looks like this: (scheme == #"https")
-(void) logOut {
NSString *pget = #"/api/logout/";
NSString *path = [pget stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *absolutePath = [NSString stringWithFormat:#"%#://%#%#", scheme, host, path];
NSURL *url = [NSURL URLWithString:absolutePath];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:30.0];
NSString *authValue = [NSString stringWithFormat:#"Bearer %#", accessToken];
[urlRequest setValue:authValue forHTTPHeaderField:#"Authorization_Extra"];
[urlRequest setValue:#"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:#"content-type"];
[urlRequest setHTTPMethod: #"POST"];
/*
NSString *post = [NSString stringWithFormat:#"access_token_extra=%#", accessToken];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding];
NSString *postLength = [NSString stringWithFormat:#"%lu", (unsigned long)[postData length]];
[urlRequest setValue:postLength forHTTPHeaderField:#"Content-Length"];
[urlRequest setHTTPBody:postData];
*/
NSDictionary* headers = [urlRequest allHTTPHeaderFields];
NSLog(#"headers: %#",headers);
_originalRequest = urlRequest;
NSURLConnection* connection = [[NSURLConnection alloc] initWithRequest:urlRequest delegate:self startImmediately:NO];
[connection start];
}
#pragma mark NSURLConnection Delegate Methods
- (NSURLRequest *)connection: (NSURLConnection *)connection
willSendRequest: (NSURLRequest *)request
redirectResponse: (NSURLResponse *)redirectResponse;
{
if (redirectResponse) {
// we don't use the new request built for us, except for the URL
NSURL *newURL = [request URL];
NSMutableURLRequest *newRequest = [_originalRequest mutableCopy];
[newRequest setURL: newURL];
NSLog(#"New Request headers: %#", [newRequest allHTTPHeaderFields]);
return newRequest;
} else {
return request;
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSHTTPURLResponse *)response {
NSLog(#"Received response statuscode: %ld", (long)[response statusCode]);
responseData = [[NSMutableData alloc] init];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (NSCachedURLResponse *)connection:(NSURLConnection *)connection
willCacheResponse:(NSCachedURLResponse*)cachedResponse {
return nil;
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSLog(#"connection finished:");
[_delegate handleData:responseData];
}
The _Delegate handleData parses the response, and the custom response is always that I am lacking either the header or post parameter needed for the Bearer token.
It seems that even though I am replacing the request with a mutable copy of the original on every redirect, the headers/parameters still get stripped by NSURLConnection. But why, and how, since I'm sending a copy of the original request every time and I verify by logging that they are there?
I want to send one data with POST method to one url and received answer from that url.
I write this code for send data ("a") to this url ("http://www.test.com/test/msht")
this is my code but not working please guide me how to send data and give answer from url.
-(IBAction)btn_post_clicked:(id)sender{
//if there is a connection going on just cancel it.
[self.connection cancel];
//initialize new mutable data
NSMutableData *data = [[NSMutableData alloc] init];
self.receivedData = data;
[data release];
//initialize url that is going to be fetched.
NSURL *url = [NSURL URLWithString:#"http://www.test.com/test/msht"];
//initialize a request from url
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[url standardizedURL]];
//set http method
[request setHTTPMethod:#"POST"];
//initialize a post data
NSString *postData = [[NSString alloc] initWithString:#"a"];
//set request content type we MUST set this value.
[request setValue:#"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
//set post data of request
[request setHTTPBody:[postData dataUsingEncoding:NSUTF8StringEncoding]];
//initialize a connection from request
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
self.connection = connection;
[connection release];
//start the connection
[connection start];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{
[self.receivedData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{
NSLog(#"%#" , error);
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection{
//initialize convert the received data to string with UTF8 encoding
NSString *htmlSTR = [[NSString alloc] initWithData:self.receivedData
encoding:NSUTF8StringEncoding];
NSLog(#"%#" , htmlSTR);
}
My friend your code is wrong!!! you should determine name of post value in post NSString....
you don't send a value only.
you should write this code if get post method name in server is user :
NSString *post = [NSString stringWithFormat:#"user=a"];
I have made this so far. It's code that will make a json String request with an http Header. When i run this code i get no errors. But i get a Expression result unused warning. I should get a response from the web service after sending this http header.
code:
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *nid = #"";
NSString *vocab = #"";
NSString *inturl = #"testoverview";
NSString *mail = #"chh#fbr.dk";
NSString *md5pw = #"4d57e7ef1b7c3f431aca424764e9d786";
NSDictionary *jsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
nid, #"nid",
vocab, #"vocab",
inturl, #"inturl",
mail, #"mail",
md5pw, #"md5pw",nil];
NSError *error;
NSData *jsonData = [NSJSONSerialization dataWithJSONObject:jsonDictionary options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
if (!jsonData) {
NSLog(#"Got an error; %#", error);
} else if(jsonData) {
NSString *url = #"http://www.taenk.dk/services/mobile";
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url] cachePolicy:NSURLCacheStorageAllowed timeoutInterval:30.0];
[request setValue:jsonString forHTTPHeaderField:#"X-FBR-App"];
[[NSURLConnection alloc] initWithRequest:request delegate:self]; <-- this line triggers the warning: "Expression result unused"
NSLog(#"jsonString %#", jsonString);
}
Can anybody clarify 2 things for me:
Does this trigger a response as soon as the request to the web service?
If yes, how do i print this result out?
You need to assign the result to a variable like
NSURLConnection *con = [[NSURLConnection alloc] initWithRequest:...
for later use (e.g. [con cancel];)
Then you should at least implement the delegate method connection:didFailWithError:. In the class reference I don't see the connection:didFinishLoading... anymore. Can you use the sendSynchronousRequest:returningResponse:error: instead, then you'll have the result, be it positive or negative.
This is how I retrieved the data (this version is without ARC):
- (void) connection :(NSURLConnection *)conn didReceiveData :(NSData *)data {
NSString *msg = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
[self checkAutoMailReply:msg];
[msg release];
}
msg contains the pure response data, no header or such.
I'm trying to access a secure url from ios. Basically url will prompt the user with Username and Password. How can I send username and Password from ios?
My Code
Here is the Methods that I'm using to access JSON Parser
- (NSString *)stringWithUrl:(NSURL *)url{
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url
cachePolicy:NSURLRequestReturnCacheDataElseLoad
timeoutInterval:30];
// Fetch the JSON response
NSData *urlData;
NSURLResponse *response;
NSError *error;
// Make synchronous request
urlData = [NSURLConnection sendSynchronousRequest:urlRequest
returningResponse:&response
error:&error];
// Construct a String around the Data from the response
return [[[NSString alloc] initWithData:urlData encoding:NSUTF8StringEncoding] autorelease];}
- (id) objectWithUrl:(NSURL *)url{
SBJsonParser *jsonParser = [[[SBJsonParser alloc]init] autorelease];
NSString *jsonString = [self stringWithUrl:url];
// Parse the JSON into an Object
return [jsonParser objectWithString:jsonString error:nil]; }
Here is the piece of code that I'm retrieving json keys to my dictionary.
- (NSDictionary *) downloadFeed {
id response = [self objectWithUrl:[NSURL URLWithString:#"http://mysite.com/Services/Secure.svc/GetList?id=2127"]];
NSDictionary *feed = (NSDictionary *)response;
return feed; }
Can someone let me know where can I pass the Username and Password to this url?
Either switch to ASIHTTPRequest, which handles Basic authentication simply, or use a NSMutableRequest and set the Authorization header correctly, with a base64 encoded user:password pair.
I am writing a program in Objective-C and I need to make web requests to web server, but asynchronously and I am fairly new on mac, I am very good at windows technologies, but I need to know that if I use NSOperation (introduced in 10.5, i am assuming that it will not run in 10.4 MAC?), or if it was implemented such that it utilizes system threading which will be available on 10.4?
Or I should create a new thread and create a new runloop, also how to use cookies etc, if anyone can give me one small example, that will be of great help. I want this sample to run on mac 10.4 too if possible.
There's a good example of using NSURLRequest and NSHTTPCookies to do a full web application example of logging into a website, storing the SessionID cookie and resubmitting it in future requests.
NSURLConnection, NSHTTPCookie
By logix812:
NSHTTPURLResponse * response;
NSError * error;
NSMutableURLRequest * request;
request = [[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:#"http://temp/gomh/authenticate.py?setCookie=1"]
cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:60] autorelease];
[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"RESPONSE HEADERS: \n%#", [response allHeaderFields]);
// If you want to get all of the cookies:
NSArray * all = [NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:[NSURL URLWithString:#"http://temp"]];
NSLog(#"How many Cookies: %d", all.count);
// Store the cookies:
// NSHTTPCookieStorage is a Singleton.
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookies:all forURL:[NSURL URLWithString:#"http://temp"] mainDocumentURL:nil];
// Now we can print all of the cookies we have:
for (NSHTTPCookie *cookie in all)
NSLog(#"Name: %# : Value: %#, Expires: %#", cookie.name, cookie.value, cookie.expiresDate);
// Now lets go back the other way. We want the server to know we have some cookies available:
// this availableCookies array is going to be the same as the 'all' array above. We could
// have just used the 'all' array, but this shows you how to get the cookies back from the singleton.
NSArray * availableCookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:[NSURL URLWithString:#"http://temp"]];
NSDictionary * headers = [NSHTTPCookie requestHeaderFieldsWithCookies:availableCookies];
// we are just recycling the original request
[request setAllHTTPHeaderFields:headers];
request.URL = [NSURL URLWithString:#"http://temp/gomh/authenticate.py"];
error = nil;
response = nil;
NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(#"The server saw:\n%#", [[[NSString alloc] initWithData:data encoding: NSASCIIStringEncoding] autorelease]);
For asynchronous requests, you need to use NSURLConnection.
For cookies, see NSHTTPCookie and NSHTTPCookieStorage.
UPDATE:
The code below is real, working code from one of my applications. responseData is defined as NSMutableData* in the class interface.
- (void)load {
NSURL *myURL = [NSURL URLWithString:#"http://stackoverflow.com/"];
NSURLRequest *request = [NSURLRequest requestWithURL:myURL
cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
timeoutInterval:60];
[[NSURLConnection alloc] initWithRequest:request delegate:self];
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
responseData = [[NSMutableData alloc] init];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
[responseData release];
[connection release];
// Show error message
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
// Use responseData
[responseData release];
[connection release];
}
I am able to fetch cookie in such way:
NSArray* arr = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:[NSURL URLWithString: #"http://google.com" ]];
This one works fine for asynchronous request as well.