I've been trying to simply call an api on an android build supporting 64 bit (IL2CPP build) and the UnityWebRequest class didnt seem to work. It's being called via a simple ui button click. It hits the webRequest.SendWebRequest(); and nothing happens. Ive tried the following samples. One, directly from the Unity docs for UnityWebRequest and others using standard HttpClient.
UnityWebRequest:
IEnumerator GetRequest(string uri)
{
using (UnityWebRequest webRequest = UnityWebRequest.Get(uri))
{
webRequest.SetRequestHeader("Authorization", "Bearer " + API_KEY);
yield return webRequest.SendWebRequest();
if (webRequest.isNetworkError)
{
debugText.text = ": Error: " + webRequest.error;
coroutineAllowed = false;
}
else
{
debugText.text = ":\nReceived: " + webRequest.downloadHandler.text;
dynamic jsonObj = JsonConvert.DeserializeObject(webRequest.downloadHandler.text);
foreach (var obj in jsonObj["businesses"])
{
businessResults.Add(new Business()
{
name = (string)obj["name"],
image_url = (string)obj["image_url"],
review_count = (string)obj["review_count"],
rating = (string)obj["rating"],
Coordinates = new Coordinates()
{
Latitude = (float)obj["coordinates"]["latitude"],
Longitude = (float)obj["coordinates"]["longitude"]
},
price = (string)obj["price"]
});
}
debugText.text = businessResults.Count.ToString();
//coroutineAllowed = true;
}
debugText.text = "getRequest 4";
}
}
This unfortunately did nothing at the yield return webRequest.SendWebRequest();
The next sample I tried was using HttpClient():
IEnumerator HttpClientCall(string uri) //possibly wrap in IEnumerator
{
debugText.text += "http coroutine started" +Environment.NewLine;
using (var httpClient = new HttpClient())
{
httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", API_KEY);
var response = httpClient.GetAsync(uri);
if (response.Result.StatusCode != HttpStatusCode.OK)
{
debugText.text += "FAILED HTTP GET";
}
yield return response.Result.Content.ReadAsStringAsync();
dynamic jsonObj = JsonConvert.DeserializeObject(response.Result.Content.ReadAsStringAsync().Result);
foreach (var obj in jsonObj["businesses"])
{
businessResults.Add(new Business()
{
name = (string)obj["name"],
image_url = (string)obj["image_url"],
review_count = (string)obj["review_count"],
rating = (string)obj["rating"],
Coordinates = new Coordinates()
{
Latitude = (float)obj["coordinates"]["latitude"],
Longitude = (float)obj["coordinates"]["longitude"]
},
price = (string)obj["price"]
});
debugText.text += Environment.NewLine + ((string)obj["name"]);
}
}
}
Once again, nothing when it hits yield return response.Result.Content.ReadAsStringAsync();
These all work on PC, and they both return results that i'm expecting.
The next thing i heard was about setting the android manifest application tag with android:usesCleartextTraffic="true"
This unfortunately, also did nothing for me lol. I know it has to be the 64 support, because this works on a standard build. The moment i go to build with 64 support, it doesnt work.
Any help on why it's not returning appropriately would be very helpful.
side note, i know the code is pretty ugly, but after i can figure out why the build doesnt work on the device a heavy refactoring is going to be in play. Thanks in advance!
So after a lot of trouble shooting ive found out why this was not working. The main issue seems to be stemming from my use of the standard Newtonsoft Json package when Unity, apparently, has their own internal JsonUtility class. After changing this:
dynamic jsonObj = JsonConvert.DeserializeObject(response.Result.Content.ReadAsStringAsync().Result);
To This:
var js = JsonUtility.FromJson<T>(response.Result.Content.ReadAsStringAsync().Result);
my results are finally showing in the the apk build correctly.
Also, to note that to map correctly, the JsonUtility.FromJson must be typed to a class that exactly mirrors the incoming json object explicitly.
The page article that finally helped me with this issue is here.
P.S.
Thank you to #RetiredNinja for trying to help instead of just downvoting and saying nothing of value. You're amazing!
Related
we have an app under xamarin android build with visual studio 2017.
this app works since three years without any problems.
since two weeks and I don't know why actually some device can't sync with our back end.
It's really strange because nothing has change in this part .
this error does not appear on all devices but on one or two from time to time
we use the dll httpClient for to sync the datas with our backend.
If i put a break point inside the postAsync I have an exception with this -> Cannot access a disposed object. Object name: 'System.Net.Sockets.NetworkStream
Any one has an idea about how to solve this ? also what does it meam ?
Here is it the code of the postAsync method :
thanks for our time and comment guys
public override HttpResult ExecutePost(Uri target, string body)
{
var client = new HttpClient();
client.MaxResponseContentBufferSize = MaxHttpResponseBufferSize;
try
{
var requestContent = new StringContent(body, RequestContentEncoding, RequestContentType);
var response = client.PostAsync(target, requestContent).Result;
if (response.IsSuccessStatusCode)
{
var content = response.Content.ReadAsStringAsync().Result;
return new HttpResult(content, null, null);
}
return new HttpResult(null, "Response is empty", response.StatusCode.ToString());
}
catch (Exception e)
{
return new HttpResult(null, "Problem with the HttpPost", e.Message);
}
}
I experienced the same issue. Have been battling for 6 hours on this issue.
If you read the error, I was getting (Failed to connect to localhost/127.0.0.1:7113). If you put localhost in your browser or swagger tool it will work but if you put https://127.0.0.1:7113/api/weatherforecast in your browser it will not work. It will give you a certificate problem.
So I think you have to resolve 127.0.0.1 to localhost with https certificate on your local dev machine.
I'm building a MAUI app with Visual Studio 2022 Preview.
So I solved this issue by deploying my API to AZURE.
Then update to the azure url for example:
string apiUrl = "https://weatherforecast.azurewebsites.net/api/weatherforecast";
and then it worked brilliantly. Like super brilliantly.
Here is my code:
public void LoginAsync()
{
HttpClient client = new HttpClient();
string apiUrl = "https://weatherforecast.azurewebsites.net/api/weatherforecast";
UserCredentials.EmailAddress = LoginUIEntity.EmailAddress;
UserCredentials.Password = LoginUIEntity.Password;
string serialized = JsonConvert.SerializeObject(UserCredentials);
var inputMessage = new HttpRequestMessage
{
Content = new StringContent(serialized, Encoding.UTF8, "application/json")
};
inputMessage.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
try
{
var message = client.PostAsync(apiUrl, inputMessage.Content).Result;
if (message.IsSuccessStatusCode)
{
var apiResponse = message.Content.ReadAsStringAsync();
UserCredentials = JsonConvert.DeserializeObject<UserCredentials>(apiResponse.Result);
if (UserCredentials.IsValid)
{
UserCredentials.IsLoggedIn = true;
}
else
{
ErrorMessage = "Invalid credentials supplied.";
}
}
}
catch (Exception ex)
{
ErrorMessage = "An error has occurred. Please contact support if the error persists.";
}
}
}
thanks for the link your provide.
I've try up the buffer on the postasync / try to sync in wifi OR 3G / delete special character in json / ...
but nothing work
we have move the prod database to the test and try to sync the data to the test database with postman. with postman the result was ENTITY TOO LARGE !
Json is size > 1.2 mega and the default value inside IIS is set to 1 mega
Here is it the problem ...
thanks problem solve
So I have been working on a product (Android First and then iOS) for a long time that index faces of people using AWS Rekognition and when they are again scanned later, it identifies them.
It's working great when I index a face from an Android device and then try to search it with an Android device. But if I try to search it later on iOS app, it doesn't find it. Same is the result if I go other way round. Index with iOS, search with Android, not found.
The collection ID is same while indexing and searching on both devices. I couldn't figure out how is it possible that a face indexed by one OS type, same region, same collection, couldn't be found while on other device.
If anyone here could try and help me with the issue, please do. I'll be really thankful.
Update 1: I have called "listCollections" function on both iOS and android apps. Both of them are showing different list of collections. This is the issue. But I can't figure our why it is happening. The identity pool and region is same on both of them.
Here is my Android Code to access Rekognition:
mCredentialsProvider = new CognitoCachingCredentialsProvider(
mContext,
"us-east-2:xbxfxexf-x5x5-xax7-x9xf-x5x0xexfx1xb", // Identity pool ID
Regions.US_EAST_2 // Region
);
mUUID = UUID.randomUUID().toString().replace("-", "");
mAmazonS3Client = new AmazonS3Client(mCredentialsProvider);
mAmazonS3Client.setRegion(Region.getRegion(Regions.US_EAST_2));
mAmazonRekognitionClient = new AmazonRekognitionClient(mCredentialsProvider);
if(!mAmazonS3Client.doesBucketExist(mFacesBucket)) {
mAmazonS3Client.createBucket(mFacesBucket);
}
Log.i(TAG, "Uploading image to S3 Bucket");
mAmazonS3Client.putObject(mFacesBucket, getS3ObjectName(), new File(data[0].toString()));
Log.i(TAG, "Image Uploaded");
Image image = new Image();
try {
image.setBytes(ByteBuffer.wrap(Files.toByteArray(new File(data[0].toString()))));
} catch (IOException e) {
e.printStackTrace();
}
Log.i(TAG, "Indexing image");
IndexFacesRequest indexFacesRequest =new IndexFacesRequest()
.withCollectionId(mFacesCollection)
.withImage(image)
.withExternalImageId(mUUID)
.withDetectionAttributes("ALL");
mAmazonRekognitionClient.indexFaces(indexFacesRequest);
Here is my iOS code to access Rekognition:
func uploadToCollection(img: UIImage)
{
let myIdentityPoolId="us-east-2:xbxfxexf-x5x5-xax7-x9xf-x5x0xexfx1xb"
let credentialsProvider = AWSCognitoCredentialsProvider(regionType: .USEast2, identityPoolId: myIdentityPoolId)
//store photo in s3()
let configuration = AWSServiceConfiguration(region: .USEast2, credentialsProvider: credentialsProvider)
AWSServiceManager.default().defaultServiceConfiguration = configuration
rekognitionClient = AWSRekognition.default()
guard let request = AWSRekognitionIndexFacesRequest() else
{
puts("Unable to initialize AWSRekognitionindexFaceRequest.")
return
}
var go=false
request.collectionId = "i_faces" + self.firebaseID.lowercased() //here iosCollection will be replaced by firebase Current UserID
request.detectionAttributes = ["ALL", "DEFAULT"]
request.externalImageId = self.UUID //this should be mUUID, passed as parameter to this function
let sourceImage = img
let image = AWSRekognitionImage()
image!.bytes = sourceImage.jpegData(compressionQuality: 0.7)
request.image = image
self.rekognitionClient.indexFaces(request) { (response:AWSRekognitionIndexFacesResponse?, error:Error?) in
if error == nil
{
print("Upload to Collection Complete")
}
go=true
return
}
while(go==false){}
}
Create a collection and added images to the collection and create an index. I suspect few things in your setup and code.
1) The Identity Pool Id, AWS Region used across iOS and Android
2) The name of the collection used (pay attention to the delimiters used in the collection name)
Android:
CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(appContext, "MyPoolID", Regions.US_EAST_1);
public void searchFacesByImage() {
Image source = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms.jpg"));
Image ms2 = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms-2.jpg"));
Image ms3 = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms-3.jpg"));
Image ms4 = new Image().withS3Object(new S3Object().withBucket("us-east-1-bucket").withName("ms-4.jpg"));
String collectionId = "MyCollectionID";
AmazonRekognitionClient client = new AmazonRekognitionClient(credentialsProvider);
try {
System.out.println("Creating collection: " + collectionId );
CreateCollectionRequest request = new CreateCollectionRequest().withCollectionId(collectionId);
CreateCollectionResult createCollectionResult = client.createCollection(request);
System.out.println("CollectionArn : " + createCollectionResult.getCollectionArn());
System.out.println("Status code : " + createCollectionResult.getStatusCode().toString());
} catch (Exception ex) {
ex.printStackTrace();
}
IndexFacesRequest indexFacesRequest = new IndexFacesRequest();
indexFacesRequest.setImage(source);
indexFacesRequest.setCollectionId(collectionId);
client.indexFaces(indexFacesRequest);
indexFacesRequest = new IndexFacesRequest();
indexFacesRequest.setImage(ms2);
indexFacesRequest.setCollectionId(collectionId);
client.indexFaces(indexFacesRequest);
indexFacesRequest = new IndexFacesRequest();
indexFacesRequest.setImage(ms4);
indexFacesRequest.setCollectionId(collectionId);
client.indexFaces(indexFacesRequest);
SearchFacesByImageRequest searchFacesByImageRequest = new SearchFacesByImageRequest();
searchFacesByImageRequest
.withCollectionId(collectionId)
.withImage(ms3)
.withFaceMatchThreshold(80F);
SearchFacesByImageResult searchFacesByImageResult =
client.searchFacesByImage(searchFacesByImageRequest);
List <FaceMatch> faceImageMatches = searchFacesByImageResult.getFaceMatches();
for (FaceMatch face: faceImageMatches) {
Log.d(TAG, face.toString());
}
}
iOS:
Create the Cognito Credentials Provider
AWSCognitoCredentialsProvider *credentialsProvider = [[AWSCognitoCredentialsProvider alloc] initWithRegionType:AWSRegionUSEast1 identityPoolId: #"MyPoolID"];
AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:credentialsProvider];
[AWSServiceManager defaultServiceManager].defaultServiceConfiguration = configuration;
Use the same Identity Pool Id and Region (us-east-1).
func faceIndexNoFacesSearch() {
let rekognition = AWSRekognition.default()
let faceRequest = AWSRekognitionSearchFacesByImageRequest()
do {
let image = AWSRekognitionImage()
image?.s3Object = AWSRekognitionS3Object()
image?.s3Object?.bucket = "us-east-1-bucket"
image?.s3Object?.name = "ms-2.jpg"
faceRequest!.image = image
faceRequest!.collectionId = "MyCollectionID"
rekognition.searchFaces(byImage: faceRequest!).continueWith { (response) -> Any? in
XCTAssertNil(response.error)
XCTAssertNotNil(response.result)
if let result = response.result {
XCTAssertNotNil(result.faceMatches)
}
return nil
}.waitUntilFinished()
} catch {
print("exception")
}
}
Please post questions in the comment and we can discuss there.
Ok so the problem turned out to be much different and solution was rather very simple. I posted another question regarding the same problem when I found it was a bit different and I have posted an answer as well.
Here it is:
https://stackoverflow.com/a/53128777/4395264
I am new to Unity and Android development, but please do not mark this as a duplicate - I've looked all over the stacks for an answer to this, but similar topics and questions haven't yielded any working solutions, or are wanting on details, or outdated, or seem not to fit my specific need.
Ok, I have a quiz app built from following part 1 & 2 of this tutorial. That link contains all the source files anyone might need for reference, and everything works fine on ios and in the unity editor, fyi.
The trouble is with the loadGameData function from the DataController script in Android. Again, everything works fine in iOS and the unity editor, but when I make an Android sdk, the quiz is blank and the console says the data couldn't be loaded.
Here is how the function is currently written (full file in tutorial link):
private void LoadGameData ()
{
string filePath = Path.Combine (Application.streamingAssetsPath, gameDataFileName);
if (File.Exists (result))
{
string dataAsJson = File.ReadAllText (result);
GameData loadedData = JsonUtility.FromJson<GameData> (dataAsJson);
allRoundData = loadedData.allRoundData;
} // #if(File.Exists...
else
{
Debug.LogError ("Cannot load game data!");
} // #else
} // #LoadGameData
If you check the same tutorial on youtube, you'll see lots of people have noted the same problem with the Android build and have been left unanswered. Same goes with unity forums - that's one reason why I don't think this question is a duplicate and could be helpful to others in a similar situation.
I've found that Android has always been sorta tricky with this and that there used to different ways of accessing a file based on platform, but these days "Application.streamingAssetsPath" should find the streaming assets directory on any platform, even Android.
What I've also learned is that in android, even if the path is correct, the file is compressed and will only return a url. So the url needs to be converted using unity's WWW class. I get that, but as of yet, I haven't been able to re-write my loadGameData function to work properly and load the allRoundData array.
Here's an example of some things I've tried:
IEnumerator androidData()
{
string filePath = Path.Combine (Application.streamingAssetsPath, gameDataFileName);
if (filePath.Contains("://"))
{
WWW www = new WWW(filePath);
yield return www;
result = www.text;
} // #if(filePath.Contains
} // #androidData
private void LoadGameData ()
{
androidData();
if (File.Exists (result))
{
string dataAsJson = File.ReadAllText (result);
GameData loadedData = JsonUtility.FromJson<GameData> (dataAsJson);
allRoundData = loadedData.allRoundData;
} // #if(File.Exists...
else
{
Debug.LogError ("Cannot load game data!");
} // #else
} // #LoadGameData
I know I'm close, and this is probably simple -- but I just can't seem to get to the finish line on this. Can some one help me figure out how to write the loadGameData function so it will load this allRoundData array on android?
An example code would be awesome and much appreciated, not just by me, but I'm sure many others would appreciate it also - Thank you!
UPDATE:
Based on the first answer, I've tested some code that works on the unity editor, but crashes in Android. In the Unity editor, I get the "file already exists" message. Here is the code I've tested:
Already had: private string gameDataFileName = "data.json";
I added the copyFile call above loadGameDate in Start() and wrote the copy file and loadGameData functions like so ..
int copyFileToPersistentDataPath(string gameDataFileName)
{
string persistentPath = Application.persistentDataPath + "/" + gameDataFileName;
try
{
//Copy only if gameDataFileName does not exist
if (!System.IO.File.Exists(persistentPath))
{
string path = System.IO.Path.Combine(Application.streamingAssetsPath, gameDataFileName);
WWW www = new WWW(path);
while (!www.isDone) { }
System.IO.File.WriteAllBytes(persistentPath, www.bytes);
Debug.Log(gameDataFileName + " Successfully Copied File to " + persistentPath);
return 1;
}
else
{
Debug.Log(gameDataFileName + " File already exist here. There is no need to copy it again");
return 0;
}
}
catch (Exception e)
{
Debug.Log(gameDataFileName + " Failed To Copy File. Reason: " + e.Message);
return -1;
}
}
private void LoadGameData ()
{
string tempPath = Path.Combine(Application.persistentDataPath, gameDataFileName);
string dataAsJson = File.ReadAllText(tempPath);
GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);
allRoundData = loadedData.allRoundData;
} // #LoadGameData
This works with or without the call to copy the file in the editor, but crashes either way in Android.
I ended up putting the files in a Resources folder and going the resources.load a json file into a text asset and throw that into a string to parse route. I now have two different load functions, one that works in ios etc. and one that works in android. Here is the android function (the resourcesGameDataFile does not have the .json extension):
public void LoadDataForAndroid()
{
TextAsset dataFile = Resources.Load(resourcesGameDataFile) as TextAsset;
string dataAsJson = dataFile.ToString();
GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);
allRoundData = loadedData.allRoundData;
Debug.Log ("Android data loaded with" + resourcesGameDataFile);
} // #LoadDataForAndroid
And this works in the unity editor and in Bluestacks (android simulator).
As for loading and saving games, this is a duplicate. I marked and remove this as a duplicate because the answer in the duplicated questions did not explain how to read from the StreamingAssets folder. It only talked about saving and loading data.
Make sure that Write Permission is set to External (SDCard).
The first thing to do is to copy the file from StreamingAssets to the persistentDataPath location.
I've found reading data from Application.streamingAssetsPath problematic but I use two methods to solve this.
int copyFileToPersistentDataPath(string fileNameWithExtensionName)
{
string persistentPath = Application.persistentDataPath + "/" + fileNameWithExtensionName;
try
{
//Copy only if fileNameWithExtensionName does not exist
if (!System.IO.File.Exists(persistentPath))
{
string path = System.IO.Path.Combine(Application.streamingAssetsPath, fileNameWithExtensionName);
WWW www = new WWW(path);
while (!www.isDone) { }
System.IO.File.WriteAllBytes(persistentPath, www.bytes);
Debug.Log(fileNameWithExtensionName + " Successfully Copied File to " + persistentPath);
return 1;
}
else
{
Debug.Log(fileNameWithExtensionName + " File already exist here. There is no need to copy it again");
return 0;
}
}
catch (Exception e)
{
Debug.Log(fileNameWithExtensionName + " Failed To Copy File. Reason: " + e.Message);
return -1;
}
}
If that does not work for you, use the method with WebClient below:
void copyFileToPersistentDataPath(string fileNameWithExtensionName)
{
string path = System.IO.Path.Combine(Application.streamingAssetsPath, fileNameWithExtensionName);
string persistentPath = Application.persistentDataPath + "/" + fileNameWithExtensionName;
Debug.Log("Dir: " + persistentPath);
WebClient webClient = new WebClient();
webClient.Proxy = null;
webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(OnDownloadComplete);
webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(OnUpdateDownloadProgress);
Uri uri = new Uri(path);
webClient.DownloadFileAsync(uri, persistentPath);
}
void OnDownloadComplete(object sender, AsyncCompletedEventArgs e)
{
Debug.Log("Finished Downloading: " + e.Error.Message);
}
void OnUpdateDownloadProgress(object sender, DownloadProgressChangedEventArgs e)
{
Debug.Log("Uploading Progreess: " + e.ProgressPercentage);
}
File Copy Usage:
copyFileToPersistentDataPath("yourFileName.txt");
After copying the file, you can then read and convert it to Json like this:
string fileNameWithExtensionName = "questionfile.txt";
string tempPath = Path.Combine(Application.persistentDataPath, fileNameWithExtensionName);
string dataAsJson = File.ReadAllText(fileNameWithExtensionName);
GameData loadedData = JsonUtility.FromJson<GameData>(dataAsJson);
How to display JSON coming from php in intel App Framwork app. I have tried .getJSON() and .getJSONP() methods. Is there any full guide explaining these methods and how to use them?
Here are documentations for $.getJSON() and $.jsonP()
found the answer .
function getRaceData() {
var postBody = "";
postBody = "rid="+theRID;
var parameters = new AppMobi.Device.RemoteDataParameters();
parameters.url = "http://MyWebSite.com/php_src/getRaceData.php";
parameters.id = "1007";
parameters.method = "POST";
parameters.body = postBody;
jq.ui.showMask('loading race data');
AppMobi.device.getRemoteDataExt(parameters);
}
//then somewhere in your event handler, check the ID of the response and process the JSON....
case 1007: //got race data
var raceData = jq.parseJSON(event.response);
jq("#raceRCList").hide();
jq("#raceRCname").html(raceData.race_name);
jq("#raceRCdate").val(raceData.date);
jq("#raceRCstart").val(raceData.start_time);
jq("#raceRCData").show();
break;
I'm trying to get the http response headers every time I visit some site. I thought that using an observer like the following is enough to do it:
const OBS = Cc['#mozilla.org/observer-service;1'].getService(Ci.nsIObserverService);
let httpRequestObserver ={
observe: function(subject, topic, data){
var httpChannel = subject.QueryInterface(Ci.nsIHttpChannel);
if (topic == "http-on-examine-response") {
headers=httpChannel.getAllResponseHeaders();
}
}
};
And in the startup method I add it then in the shutdown I remove it:
OBS.addObserver(httpRequestObserver, "http-on-examine-response", false);//startup methode
OBS.addObserver(httpRequestObserver, "http-on-examine-response", false);//shutdown
But I'm getting this in the log:
JavaScript Error: "httpChannel.getAllResponseHeaders is not a function"
Am I taking the wrong way and the operation is more complicated than it seem? this is for an extension for firefox for android and i'm not using sdk. Thanks for your help.
nsIHttpChannel is not XMLHttpRequest. Instead XMLhttpRequest is a nice wrapper class around channels - not just http ones -, which also adds convenience functions such as getAllResponseHeaders().
You may use nsIHttpChannel.visitResponseHeaders to simulate getAllResponseHeaders.
if (subject instanceof Ci.nsIHttpChannel) {
var headers = "";
subject.visitResponseHeaders(function(header, value) {
headers += header + ": " + value + "\r\n";
});
}