Develop Reference

Pass parameters to Get request on swiftUI

I'm having trouble with passing in parameters to a get request. This request is intended to return a list of warehouses after the user entered some search parameters such as Date, State, ZIP and/or warehouse number, which is the only mandatory field. So when the search button is pressed the query is executed, but im getting this error:
2021-04-19 15:49:00 +0000
2021-11-02 13:06:44.670511-0600 WAREHOUSE_IOS-Master[3142:186324] GET method must not have a body
2021-11-02 13:06:44.670799-0600 WAREHOUSE_iOS-Master[3142:186324] Task <C7839029-C527-490E-8747-137012285F14>.<3> finished with error [-1103] Error Domain=NSURLErrorDomain Code=-1103 "resource exceeds maximum size" UserInfo={NSLocalizedDescription=resource exceeds maximum size,
error: invalidResponse
Okay so what im doing is passing a body to the get request that includes the search parameters as such:
struct WarehouseBody : Codable {
let dateRegistration : String?
let state : String?
let zip : String?
let warehouseNumber : String
}
and I'm expecting a response of this type:
struct WareHouseResponse: Codable {
let status: String?
let code: Int?
let responseCode, message: String?
let error: Bool?
let errorMessage: String?
let result: Result?
enum CodingKeys: String, CodingKey {
case status = "Status"
case code = "Code"
case responseCode = "ResponseCode"
case message = "Message"
case error = "Error"
case errorMessage = "ErrorMessage"
case result = "Result"
}
}
but according to what I've reading on other posts this is not the correct way of using a get request, but I really really need to do some testing. Is there a way that I can achieve this without needing to alter the backend? Just to mention that I ´m also the developer of the backend (c# using .net framework and dapper)so if the easiest way is to achieve this is by altering it I can also do that. Any ideas are very much appreciated.
On the backend I was thinking of implementing a post Request that sends the search parameters to the server and then a get request that pulls out the requested information, but I don't know if that's the correct approach. But this not feasible at the moment because the Web API are already publish and I cannot re publish with the changes at the moment, and is really urgent to test the response so that's why I would like to know if all this can be done from the front end first. Thank you very much for all the help!
Thank you very much for your help!
EDIT: Also I forgot to mention that the api has been previously tested on POSTMAN and is working perfectly.

Since iOS 13. you cannot pass in parameters to a GET request. There’s no easy way around this. You need to change your request from a GET to a POST on the backend. In my case, this was an easy task because I had access to the API source— but, if you don’t, just ask the backend team to change it, and pass in the parameters as in any other POST request. That should work.

Twilio Functions - Understanding customer voice through a outbound call using ASR

I need to automatically make calls for customers and start a interaction with them through voice. Basically, when the customer pickup the phone, my "robot" will ask: "Hey, it seems you didn't finish your order. Would you like to finish by phone?" Customer will say YES, NO, or another phrase, and I will follow the flow.
My questions:
1) What is the best approach to solve this problem using Twilio?
2) It seems Twilio has this functionality (ASR) to understand only for inbound calls when I use functions. How can I do that with outbound calls?
3) Is Twilio ready to understand another languages except English? I need to use Portuguese, Brazil.
Thank you for your help.

Twilio developer evangelist here.
To automatically make calls you will need to use the Twilio Programmable Voice API. I note you're using C# according to the tags, so you can start with the Twilio C# library. Using the library you can make calls with the API like this:
using System;
using Twilio;
using Twilio.Rest.Api.V2010.Account;
using Twilio.Types;
class Example
{
static void Main(string[] args)
{
// Find your Account Sid and Auth Token at twilio.com/console
const string accountSid = "your_account_sid";
const string authToken = "your_auth_token";
TwilioClient.Init(accountSid, authToken);
var to = new PhoneNumber("+14155551212");
var from = new PhoneNumber("+15017122661");
var call = CallResource.Create(to,
from,
url: new Uri("http://demo.twilio.com/docs/voice.xml"));
Console.WriteLine(call.Sid);
}
}
For a bit more detail on what all this means, check out the guide on making outbound phone calls with C#.
You will see in that example that we pass a URL to the method that makes the call. This URL can point anywhere, including at a Twilio Function (which is just a Node.js run in the Twilio infrastructure) or your own server. When the call connects to the user Twilio will make an HTTP request to that URL to find out what to do next. To tell Twilio what to do you will need to return TwiML.
To respond with the message that you want and then gather speech input from your user you will need to use the <Say> and <Gather> elements of TwiML. An example response might look like:
<Response>
<Gather input="speech" hints="yes, no" action="/gatherResponse">
<Say voice="alice">Hey, it seems you didn't finish your order. Would you like to finish by phone?</Say>
</Gather>
</Response>
In this case we start with <Gather> so that we can capture anything the user says while the call is speaking to them. We set the input attribute to "speech" so that we can use speech to text to recognise what they say. Also included is the hints attribute which can give hints to the service for the text you expect to hear. Finally, there is an action attribute which is a URL that will be called with the result of this.
You can change the language that the <Gather> expects to hear using the language attribute. There are a number of languages available including Brazilian Portuguese, which you would set with "pt-BR".
Nested inside the <Gather> is a <Say> which you use to read out your message. You can use the voice attribute to change available voices.
The next thing you need to do is respond to the result of the <Gather>. At this stage it depends on what web application framework you are using. The important thing is that when it has a result, Twilio will make an HTTP request to the URL set as the action attribute. In that request will be two important parameters, SpeechResult and Confidence. The SpeechResult has the text that Twilio believes was said and the Confidence is a score between 0.0 and 1.0 for how sure Twilio is about it. Hopefully your result will have "Yes" or "No" (or the Brazilian Portuguese equivalent). At this point you need to return more TwiML to tell Twilio what to do next with the call depending on whether the answer was positive, negative or missing/incorrect. For more ideas on how to handle calls from here, check out the Twilio voice tutorials in C#.
Let me know if that helps at all.

Get the data sent by MailChimp API V3 Webhook

I'm trying to write a webhook for Mailchimp events using API version three and I'm struggling a bit due to their lack of a library, documentation, and basic examples, but also my lack of experience.
I know we should secure the webhook by putting a secret in the URL, that's fine. By the way, MailChimp doesn't allow configuration of basic access authentication in their portal.
They say "While we do send HTTP POST for actual data, our webhook validator will only send HTTP GET requests. You'll need to allow both in order for your webhook to function properly." Ok, I guess I can use Request.HttpMethod to return a success status code if it's a GET and process some data if it's a POST.
Not sure how to pick stuff out of the request though, and ideally don't want to write heaps of classes and properties to cover all the event types, C# being statically typed, although I guess the dynamic keyword is also an option.
Do I need to deserialise JSON? I've only written one webhook before for another API with the help of a library, you could construct an API event using either a string, stream, or textreader, which came from the request. The library made everything very simple.
For reference, there's also this question which shows how to get some data using PHP: How to pass email address to webhook from mailchimp
The data that gets posted looks like this (supposedly, there doesn't seem to be any documentation for V3):
"type": "unsubscribe",
"fired_at": "2009-03-26 21:40:57",
"data[action]": "unsub",
"data[reason]": "manual",
"data[id]": "8a25ff1d98",
"data[list_id]": "a6b5da1054",
"data[email]": "api+unsub#mailchimp.com",
"data[email_type]": "html",
"data[merges][EMAIL]": "api+unsub#mailchimp.com",
"data[merges][FNAME]": "MailChimp",
"data[merges][LNAME]": "API",
"data[merges][INTERESTS]": "Group1,Group2",
"data[ip_opt]": "10.20.10.30",
"data[campaign_id]": "cb398d21d2",
"data[reason]": "hard"
I just basically need to get this data into variables so I can sync it with my database.
Here's my (skeleton) controller so far:
[Route("mailchimp/newsletter-webhook/super-secret-key-goes-here")]
public HttpStatusCodeResult ChargeBeeWebhook()
{
return new HttpStatusCodeResult(200);
}

Assuming you've already set up your MailChimp Webhooks as described here, you can get the posted data using Request.Form syntax. Using the example posted data from the question, here's how your controller code should look like:
[AllowAnonymous]
public void ChargeBeeWebhook()
{
// type variable will be "unsubscribe"
string type = Request.Form["type"];
// action variable will be "unsub"
string action = Request.Form["data[action]"];
// reason variable will be "manual"
string reason = Request.Form["data[reason]"];
// ...
// ...
// ... do the same with the rest of the posted variables
// ...
// sync the posted data above with your database
// ...
// ...
}

RangeFileContentResult and Video streaming with Ranged Requests

I have an application which intended to stream videos back from our local DB. I spent a lot of time yesterday attempting to return the data a either a RangeFileContentResult or RangeFileStreamResult without success.
In short, when I return the file as either of these two results I cannot seem to get a video to stream correctly (or play at all).
The request from the browser gets sent with the following headers:
Range: bytes=0-
And the response comes provided gives these headers as an example:
Accept-Ranges: bytes
Content-Range: bytes 0-5103295/5103296
In terms of network traffic, I get a series of 206's for partial results, then a 200 at the end (according to fiddler) which seems correct.
Chrome's network tab disagrees with this and see's an initial request (always 13 bytes which I assume is a handshake) then a couple more requests which have a status of either cancelled or pending.
As far as I understand, this is more or less correct, 206 - cancel, 206 - cancel etc. But the video never plays.
If I switch the result from my controller to a FileResult, the video plays and Chrome, IE10 and Firefox and appears to begin playing before the end of the download is completed (which feels a little like it's streaming! although I suspect it's not)
But with the range result I get nothing in chrome or IE and the entire video downloads in one drop in firefox.
As far as I understood, the RangeFileContentResult should handle responding to the client with a range of bytes to download (which mine doesn't seem to do, it just tells it to get the whole file (illustrated by the response above)). And the client should respond to that, which it doesn't seem to do.
Does anyone have any thoughts in this area? Specifically:
a) Should RangeFileContentResult be sending a range of bytes back to the client?
b) Is there any way I can explicitly control the range of bytes requested from the client side?
c) Is there any reason or anything I'm doing wrong here which would cause browsers not to load the video at all, when requesting a RangeFileContentResult?
EDIT: Added a diagram to help describe what I'm seeing:
EDIT2: Ok, so the plot thickens. Whilst playing around with the RangedFile gubbins we needed to push another system test version out and I left the 'RangeFileContentResult' on my controller action as below:
private ActionResult RetrieveVideo(MediaItem media)
{
return new RangeFileContentResult(
media.Content,
media.MimeType,
media.Id.ToString(),
DateTime.Now);
}
Rather oddly, this now seems to work as expected on our Azure system test environment but still not on my local machine. I wonder if there's something IIS based which works happily on Azures IIS8, but not on my local 7.5 instance?

The reason of the issue described here is the value passed to modificationDate parameter of RangeFileContentResult constructor:
return new RangeFileContentResult(media.Content, media.MimeType, media.Id.ToString(), DateTime.Now);
This date is used by the RangeFileResult in order to create two headers:
ETag - This header is an identifier used by browser and server to make sure that they are speaking about the same entity.
Last-Modified - This header informs the browser about the last modification date of the entity.
The fact that a DateTime.Now is being passed every time the browser makes partial request might be a reason for ETag and Last-Modified headers values to change before the client will get the whole entity (usually if the entire process takes longer than one second).
In case described above, the browser is sending If-Range header with the request. This header is telling the server that the entire entity should be resend if the entity tag (or modification date because If-Range can carry either one of those two values) doesn't much. This is what happens in this case.
The fact that modification date is "dynamic" may also cause further issues if client decides to use one of following headers for verification: If-Modified-Since, If-Unmodified-Since, If-Match, If-None-Match.
The solution in this situation is to keep a modification date in database with the file to make sure it is consistent.
There is also a place for optimization here. Instead of grabbing the whole video from DB every time a partial request is being made, one can either cache it or grab only the relevant part (if the database engine which application is using allows such an operation). Such a mechanism can be used in order to create specialized action result by delivering from RangeFileResult and overwriting WriteEntireEntity and WriteEntityRange methods.

Ok So I didn't have enough time to look at RangeFileResult in details, but I have just downloaded the file (RangeFileContentResult) from
RangeFileContentResult
and modified my code so it looks like
public ActionResult Movie()
{
byte[] file = System.IO.File.ReadAllBytes(#"C:\HOME\asp\Java\Java EE. Programming Spring 3.0\01.avi");
return new RangeFileContentResult(file, "video/x-msvideo", "01.avi", DateTime.Now);
}
and again it works. However, I noticed that when I stop the video I have an exception and it happens in RangeFileResult
if (context.HttpContext.Response.IsClientConnected)
{
WriteEntityRange(context.HttpContext.Response, RangesStartIndexes[i], RangesEndIndexes[i]);
if (MultipartRequest)
context.HttpContext.Response.Write("\r\n");
context.HttpContext.Response.Flush();
}
So you better modify the code to handle it.In terms when users already disconnected , but you are still trying to send them a response.
Again, technically it's not a big difference whether you pass byte[] or Stream , because even when you pass Stream the code working with it
using (FileStream)
{
FileStream.Seek(rangeStartIndex, SeekOrigin.Begin);
int bytesRemaining = Convert.ToInt32(rangeEndIndex - rangeStartIndex) + 1;
byte[] buffer = new byte[_bufferSize];
while (bytesRemaining > 0)
{
int bytesRead = FileStream.Read(buffer, 0, _bufferSize < bytesRemaining ? _bufferSize : bytesRemaining);
response.OutputStream.Write(buffer, 0, bytesRead);
bytesRemaining -= bytesRead;
}
}
again reads data and puts them into an byte[] array!.... So it's up to you!
BUT... I suggest that you pay attention to a content type that you provide!!!
Point is that your browser must be able to handle it!So if you provide something unknown definitely you will have problems.To find your content type string please check
mime-types-by-content-type
Again I just gave a quick look and if you have problems I will help you later when come home.

mofiPlease just copy these two files in your mvc project
RangeFileResult
RangeFileStreamResult
public ActionResult Movie()
{
var path = new FileStream(#"C:\temp\01.avi", FileMode.Open);
return new RangeFileStreamResult(path, "video/x-msvideo", "01.avi", DateTime.Now);
}
Now run your project and open in chrome (for example: http://youraddress.com:45454/Main/Movie) you should see your file playing using a standard chrome video player. it's streaming and you can see it if you put a breakpoint at
return new RangeFileStreamResult(path, "video/x-msvideo", "01.avi", DateTime.Now);
Again the source is easy to modify to change the buffer size which is used for streaming!

Creating Facebook Event in C# Returns #100 Invalid Parameter

I'm trying to put together a small app that will allow me to create events in Facebook. I've already got my Facebook app set up and have successfully tested a post to my feed through the application using the code below.
wc.UploadString("https://graph.facebook.com/me/feed", "access_token=" + AccessToken + "&message=" + Message);
When I try to take things to the next step, I've just hit a brick wall.
The code that I've written is here:
JavaScriptSerializer ser = new JavaScriptSerializer();
wc.UploadString("https://graph.facebook.com/me/events?" + "access_token=" + AccessToken, ser.Serialize(rawevent));
rawevent is a small object I wrote that puts together the elements of an event so I can pass it around my application.
I'm using a similar method using ser.Deserialize to parse the user data coming back from Facebook, so I believe this should work the other way too.
Setting the above code aside for a moment, I also have tried simply putting plain text in there in various formats and with differing levels of parameters, and nothing seems to work.
Is there something wrong with the way I'm approaching this? I've read over everything I could get my hands on, and very few of the samples out there that I could find deal with creating events, and when they do, they're not in C#.
I would appreciate any help on this. If you even just have a clean copy of JSON code that I can look at and see where mine should be tweaked I would appreciate it.
I have included a copy of what the ser.Serialize(rawevent) call produces below:
{"name":"Dev party!","start_time":"1308360696.86778","end_time":"1310952696.86778","location":"my house!"}
EDIT:
thanks to bronsoja below, I used the code below to successfully post an event to Facebook!
System.Collections.Specialized.NameValueCollection nvctest = new System.Collections.Specialized.NameValueCollection();
nvctest.Add("name", "test");
nvctest.Add("start_time", "1272718027");
nvctest.Add("end_time", "1272718027");
nvctest.Add("location", "myhouse");
wc.UploadValues("https://graph.facebook.com/me/events?" + "access_token=" + AccessToken, nvctest);

All the posting examples in the graph api examples in FB docs show using curl -F, which indicates values be POSTed as normal form data. Just key value pair like you did in your first example.
The error is likely due to sending JSON. If you are using WebClient you may be able to simply create a NameValueCollection with your data and use WebClient.UploadValues to send the request.

I've recently found that Facebook returns (#100) Invalid parameter when we are trying to post data when there is already a record on file with the same name. So for example, if you are creating a FriendList via the API, and the name is "foo", submitting another identical request for the same name will immediately return that error.
In testing events you probably deleted the "Dev party!" event after each test, or maybe changing the time since you don't want two events to collide. But I'm wondering if you duplicated your wc.UploadValues(...) statement just as a test if you would see that error again. You're either deleting your 'test' event or maybe changing names and didn't notice that two events with the same name might return the error.
What's really bad here is that the error comes back as a OAuthException, which seems very wrong. This isn't a matter of authentication or authorization, it's purely a data issue.
Facebook Engineers, if I'm right about how this works, it's a bug to return this error under these conditions, and this forum has many examples of related confusion. Please return more appropriate errors.