(Objective-C) MedTunnel: Get Message Attachment

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Get a specific attachment of a message. The MessageId and AttachmentId are obtained from the "Get Mailbox Messages" example.

For more information, see https://server.medtunnel.com/apidocs/html/M_MedTunnelMsg_Controllers_MessageController_GetAttachment.htm

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#import <CkoHttp.h>
#import <CkoBinData.h>

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

CkoHttp *http = [[CkoHttp alloc] init];
BOOL success;

// Implements the following CURL command:

// curl -X GET -k 
//         -H "Authorization:PutAuthorizationTokenHere" 
//         https://server.medtunnel.com/medtunnelmsg/api/Message/GetAttachment?messageid=989448&attachmentid=424857&setreadflag=false

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

[http SetRequestHeader: @"Authorization" value: @"PutAuthorizationTokenHere"];

// The messageId and attachmentId are contained in the response from reading the mailbox messages.
[http SetUrlVar: @"messageId" value: @"989448"];
[http SetUrlVar: @"attachmentId" value: @"424857"];
[http SetUrlVar: @"setReadFlag" value: @"false"];

// Download the attachment data into bd.
CkoBinData *bd = [[CkoBinData alloc] init];
success = [http QuickGetBd: @"https://server.medtunnel.com/MedTunnelMsg/api/Message/GetAttachment?messageid={$messageId}&attachmentid={$attachmentId}&setreadflag={$setReadFlag}" binData: bd];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

int respStatusCode = [http.LastStatus intValue];
NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
if (respStatusCode >= 400) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",http.LastHeader);
    // For errors, the response body contains an error message instead of the actual attachment data.
    NSLog(@"%@",@"Response Body:");
    NSLog(@"%@",[bd GetString: @"utf-8"]);
    NSLog(@"%@",@"Failed.");
    return;
}

// Save the attachment data.
// The attachment filename is also contained in the response from reading the mailbox messages.
success = [bd WriteFile: @"qa_output/starfish.jpg"];
if (success != YES) {
    NSLog(@"%@",@"Failed to save attachment file.");
}
else {
    NSLog(@"%@",@"Success.");
}