Objective-C
REST Send multipart/form-data

Demonstrates how to send a multipart/form-data HTTP request.
Chilkat Objective-C Downloads

Objective-C
#import <CkoRest.h>
#import <CkoStringBuilder.h>
#import <CkoBinData.h>
#import <NSString.h>

BOOL success = NO;

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

CkoRest *rest = [[CkoRest alloc] init];

//  Connect to the destination web server.
BOOL bTls = YES;
int port = 443;
BOOL bAutoReconnect = YES;
success = [rest Connect: @"www.somewebserver.com" port: [NSNumber numberWithInt: port] tls: bTls autoReconnect: bAutoReconnect];

//  This example will send the following multipart/form-data request.
//  The Content-Length is automatically computed and added by Chilkat.
//  It will be different than what is shown here.
//  The boundary string is also generated by Chilkat and will be different
//  than shown below.

//  	POST /some_path HTTP/1.1
//  	Content-Type: multipart/form-data; boundary=---------------------------735323031399963166993862150
//  	Content-Length: 834
//  
//  	-----------------------------735323031399963166993862150
//  	Content-Disposition: form-data; name="text1"
//  
//  	text 123 abc
//  	-----------------------------735323031399963166993862150
//  	Content-Disposition: form-data; name="text2"
//  
//  	xyz
//  	-----------------------------735323031399963166993862150
//  	Content-Disposition: form-data; name="file1"; filename="a.txt"
//  	Content-Type: text/plain
//  
//  	Content of a.txt.
//  
//  	-----------------------------735323031399963166993862150
//  	Content-Disposition: form-data; name="file2"; filename="a.html"
//  	Content-Type: text/html
//  
//  	<!DOCTYPE html><title>Content of a.html.</title>
//  
//  	-----------------------------735323031399963166993862150
//  	Content-Disposition: form-data; name="file3"; filename="starfish.jpg"
//  	Content-Type: image/jpeg
//  
//  	binary data goes here
//  	-----------------------------735323031399963166993862150--

//  Set the Content-Type for the topmost MIME part.
[rest AddHeader: @"Content-Type" value: @"multipart/form-data"];

//  Specify each part of the request.
rest.PartSelector = @"1";
[rest AddHeader: @"Content-Disposition" value: @"form-data; name=\"text1\""];
[rest SetMultipartBodyString: @"text 123 abc"];

rest.PartSelector = @"2";
[rest AddHeader: @"Content-Disposition" value: @"form-data; name=\"text2\""];
[rest SetMultipartBodyString: @"xyz"];

rest.PartSelector = @"3";
[rest AddHeader: @"Content-Disposition" value: @"form-data; name=\"file1\"; filename=\"a.txt\""];
[rest AddHeader: @"Content-Type" value: @"text/plain"];
[rest SetMultipartBodyString: @"Content of a.txt."];

rest.PartSelector = @"4";
[rest AddHeader: @"Content-Disposition" value: @"form-data; name=\"file2\"; filename=\"a.html\""];
[rest AddHeader: @"Content-Type" value: @"text/html"];
CkoStringBuilder *sbHtml = [[CkoStringBuilder alloc] init];
[sbHtml LoadFile: @"qa_data/html/a.html" charset: @"utf-8"];
[rest SetMultipartBodySb: sbHtml];

rest.PartSelector = @"5";
[rest AddHeader: @"Content-Disposition" value: @"form-data; name=\"file3\"; filename=\"starfish.jpg\""];
[rest AddHeader: @"Content-Type" value: @"image/jpeg"];
CkoBinData *jpgBytes = [[CkoBinData alloc] init];
[jpgBytes LoadFile: @"qa_data/jpg/starfish.jpg"];
[rest SetMultipartBodyBd: jpgBytes];

NSString *responseBody = [rest FullRequestMultipart: @"POST" uriPath: @"/some_path"];
if (rest.LastMethodSuccess != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

//  ...
//  ...

//  Clear the REST object for any subsequent requests..
[rest ClearAllHeaders];
[rest ClearAllParts];
rest.PartSelector = @"";