Pass parameters to web-service with image uploading in iphone

When you upload a file you are really posting a form's content to the browser by using a different encoding type (enctype) in your form. That encoding is specified as enctype="multipart/form-data" as an attribute of your form.
The specification in RFC 1867 "Form-based File Upload in HTML" describes the mechanism by which a file may be uploaded from a Web browser to the server.
There are a lot of articles to pass image to webservice. but, I require to pass some parameters with image.

Suppose I need to pass following parameters with image:
Parameter1
tag
status
customerID
customerName

Then following should be posted:


-----------------------------14737809831466499882746641449
Content-Disposition: form-data; name="parameter1"

MyValue1
-----------------------------14737809831466499882746641449
Content-Disposition: form-data; name="tag"

MyTags
-----------------------------14737809831466499882746641449
Content-Disposition: form-data; name="status"

1
-----------------------------14737809831466499882746641449
Content-Disposition: form-data; name="customerID"

B115B57A-23D3-56BC-B457-860BFDA83AB3
-----------------------------14737809831466499882746641449
Content-Disposition: form-data; name="customerName"

MyName 007
-----------------------------14737809831466499882746641449
Content-Disposition: form-data; name="image"; filename="20091228144754.jpg"
Content-Type: application/octet-stream

(Binary Content)
-----------------------------14737809831466499882746641449--


Format:
For normal input:

<hex value>CRLFContent-Disposition: form-data; name="<input
name>"CRLFCRLF<input value>CRLF

For file type input:

<hex value>CRLFContent-Disposition: form-data; name="<input
name>"; filename="<file
path>"CRLFContent-Type: <mime-type>CRLFCRLF<input
value>CRLF

iPhone Implementation:
We will pass the parameters in the above format. For this:
1. All the text like -----------------------------14737809831466499882746641449 is what separates each input.
2. Note also that in the end of the post we also have the text -----------------------------14737809831466499882746641449-- but it signals the end of our post, since it ends with 2 minus signs (--). Anyway, don't forget that this strange.

// setting up the request object now
 NSURL *nsurl =[NSURL URLWithString:urlString];
 NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:nsurl cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; 
 [request setURL:nsurl];
 [request setHTTPMethod:@"POST"];


NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
 NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
 [request addValue:contentType forHTTPHeaderField: @"Content-Type"];
 
 /*
  now lets create the body of the post
  */
 NSMutableData *body = [NSMutableData data];
 
 //parameter1
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; 
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"parameter1\"\r\n\r\n%@", parameter1] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 //Tags
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"tag\"\r\n\r\n%@", tag] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 //Status
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"status\"\r\n\r\n%@", status] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 //customerID
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"customerID\"\r\n\r\n%@", customerID] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 //customerName
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"customerName\"\r\n\r\n%@", customerName] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 //Image
 [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image\"; filename=\"%@\"\r\n",[fileName text]] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
 [body appendData:[NSData dataWithData:imageData]];
 [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
 
 // setting the body of the post to the reqeust
 [request setHTTPBody:body];
 
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
 

Hope, It helps.