I'm an ArcGIS Server Javascript API application that uses the buffer operation to buffer a point by 35m and finds features within that distance. The javascript API documentation recommends using a proxy page if doing buffer operations but then in the part in the javascript API documentation that explains the proxy page it says ???Common scenarios where you may run into URL length issues are when you use the buffer from a complex polygon as the input to a query task???. If I???m only buffering a point then would that run the risk of running into URL length issues? What is the URL that would be potentially long? And how can I test the length of the URL being created?
In fact you can easily get into this scenario if you, for example, are bufferizing a irregular polygon with many vertices and inner holes. This kind of geometry needs to be serialized according to the rest specification. Polygons contains rings and rings contains points. If you have many rings and points, you'll see this kind of problem in action.
Even though you are buffering a point, the resultant buffer is a polygon. You will have a large number of coordinates from that process, so no matter what you are buffering, you'll have to set up the proxy.
Even though you are buffering a point, the resultant buffer is a polygon. You will have a large number of coordinates from that process, so no matter what you are buffering, you'll have to set up the proxy.
In that case, the serialized buffer is sent through the response body, right?
I think that Mike is trying to understand how to deal with the GET/POST verb on the request, because of the limitations on the size of a querystring when using GET requests. Let me know if I got something wrong.
Thanks for your replies. I've got one or two more questions. The maps that will perform the buffer have to be accessed via https without any certificate warnings. How can I be sure the proxy is working correctly? I've followed the instructions on github but when I go check the proxy is able to forward request directly in the browser I get a 403 error message saying access is denied:
I ran into this exact same issue, so I opened an incident with ESRI. The answer is to provide the full URL to your specific proxy page that would go something like: http://"Server Name"/Proxy/proxy.ashx
The url assumes you put the proxy files into a folder called Proxy on your IIS server at c:\inetpub\wwwroot.
This is where I feel ESRI's documentation is lacking as they use a shorthand path of "/proxy" because of how they set their own IIS server up.
I have another question though - how can I test that the proxy is working in my javascript application? In my javascript application the buffer operation was completing successfully before I put in the proxy reference. If I look in the developer tools at the network requests it says:
I would say it's not going via your proxy because that url isn't exceeding the ~2000 character length restriction (or whatever it is for your browser).
You could set "alwaysUseProxy" to ensure that your proxy is always called if you want to test it is working.
I'm coming back to this because I never got it sorted before. I've got the reference to the proxy in my code. If I don't include the line
esriConfig.defaults.io.alwaysUseProxy = true;
then the buffer operation executes using GET.
If I include the flag to set alwaysUseProxy to be true I can see that the requests for loading my ArcGISTiledMapServiceLayer tiles are going through the proxy, however the buffer operation doesn't execute (the buffer doesn't appear in the network requests and there aren't any errors in the console). Any suggestions how I can work out what's going on?
';
}
}
}
catch(e){
}
}
}
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var attachDiv = rootElement.querySelector('div.lia-quilt-row-main').querySelector('div.custom-attachments');
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attachDiv = attachDiv.outerHTML;
}
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feedbackDiv = feedbackDiv + feedbackDivs[k].outerHTML;
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var attachDiv = rootElement.querySelector('div.lia-message-body-content').querySelector('div.Attachments.preview-attachments');
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angular.forEach($scope.imageData[value], function (sourceImgElement, index) {
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var newBodyPreTagData = newBody.querySelectorAll('pre');
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newBodyPreTagData[index].outerHTML = sourcePreTagElement.outerHTML;
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var foundiFrameTag;
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} */
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try{
body_L = body_L.replace('<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />','');
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$compile(rootElement.querySelectorAll('div.lia-message-body-content')[0])($scope);
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/* Destroy and recreate OOyala player videos to restore the videos in target languages which is written by iTalent as part of iTrack LILICON-79 */ /* Destroy and recreate OOyala player videos */
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// $scope.videoData[value][0].querySelector("div").getAttribute("id");
for(var vidIndex=0; vidIndex<$scope.videoData[value].length; vidIndex++){
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/** recreate in the same position */
var vid = OO.Player.create(containerId,videoId);
}
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catch(e){
}
try{
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if($scope.videoData[value][vidIndex].querySelector('video-js') != null){
var data_id = $scope.videoData[value][vidIndex].querySelector('video-js').getAttribute('data-video-id');
var data_account = $scope.videoData[value][vidIndex].querySelector('video-js').getAttribute('data-account');
var data_palyer = $scope.videoData[value][vidIndex].querySelector('video-js').getAttribute('data-player');
var div = document.createElement('div');
div.id = "brightcove";
div.class = "brightcove-player";
div.innerHTML =
'(view in my videos)'
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var script = document.createElement('script');
script.src = "https://players.brightcove.net/" + data_account + "/" + data_palyer + "_default/index.min.js";
for(var i=0;i< data.length;i++){
videodata.push(data[i]);
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document.body.appendChild(script);
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}
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$compile(rootElement.querySelectorAll('div.lia-message-body-content')[0])($scope);
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});
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tr_text = "Esri may utilize third parties to translate your data and/or imagery to facilitate communication across different languages.".replace(/lilicon-trans-text/g, tr_obj[0].title);
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try {
if (!document.getElementById("tr-msz-" + value)) {
var tr_para = document.createElement("P");
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rootElement.querySelector(".lia-message-view-blog-topic-message").appendChild(tr_para);
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rootElement.querySelector(".lia-quilt-blog-reply-message").appendChild(tr_para);
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rootElement.querySelector('.lia-quilt-occasion-message').appendChild(tr_para);
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else {
if (rootElement.querySelectorAll('div.lia-quilt-row-footer').length > 0) {
rootElement.querySelectorAll('div.lia-quilt-row-footer')[0].appendChild(tr_para);
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rootElement.querySelectorAll('div.lia-quilt-column-message-footer')[0].appendChild(tr_para);
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}
} catch (e) {
}
}
} else {
/* Do not display button for same language */
// syncList.remove(value);
var index = $scope.syncList.indexOf(value);
if (index > -1) {
$scope.syncList.splice(index, 1);
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}
});
});
/* V 1.1:2 = Reply Sync button for multi source translation */
} catch(e){
console.log(e);
}
};
if((rContent != undefined) && (rContent != "")) {
drawCanvas(decodeURIComponent(rContent));
/** Update variable with selected language code **/
$scope.previousSelCode = code_l;
}
};
/**
* @function manageTranslation
* @description Managess the translation of given language for the thread
* @param {string} langCode - Language Code
* @param {string} tid - Thread ID
*/
$scope.manageTranslation = function (langCode, tid) {
//debugger;
$scope.showTrText = false;
/* V 2.0:5 = actualStatus variable introduced to indicate detailed connector status on UI. This variable holds the actual translation percentage */
$scope.transPercent = "";
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if (tid != "") {
var bulkTranslation = lithiumPlugin.bulkTranslation(langCode, tid);
bulkTranslation.then(function (trContent) {
if(trContent.body != "") {
$scope.showPreview(trContent.body, $scope.mszList, langCode);
if(langCode != "en-US") {
$scope.showTrText = true;
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}
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// $scope.transPercent = String(trContent.status);
$scope.actualStatus = String(trContent.status);
} else {
// $rootScope.errorMsg = "Translation is in progress. Please check again a few minutes."
$rootScope.errorMsg = "Translation is in progress. Please retry in a few minutes."
}
$scope.workbench = trContent.wb;
/* V 2.0:4 = Trigger uncalled or delayed callbacks (documnet uploaded/translation completed from lithium).*/
if(trContent.callback == 'true') {
var trCompletCallback = lithiumPlugin.trCompletCallback(langCode, trContent.docID);
trCompletCallback.then(function (callback){
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$rootScope.errorMsg = "Uploading content to translate. Please check again in a few minutes."
});
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var trCompletUpload = lithiumPlugin.trCompletUpload(langCode, trContent.docID);
trCompletUpload.then(function (callback) {
//$rootScope.errorMsg = "Uploading content to translate. Please check again in a few minutes."
$rootScope.errorMsg = "Uploading content to translate. Please check again in a few minutes."
});
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$scope.updateOOS();
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if ("many" == "many"){
$scope.updateOOS();
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/* If everything fine then only check Out of Sync status */
$scope.updateOOS();
} else {
/* If translation perccent is less than 100 then show the percentage on UI */
$scope.transPercent = $scope.actualStatus;
}
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/**
* @function selectThisLang
* @description Called on select dropdown.
* @param {string} lang - Language code
*
*/
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/* 1.4:3 Update Analytics on language selection */
try {
lingoThreadLangSelected(lang, '649229');
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}
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//$rootScope.errorMsg = "Translation is in progress. Please check again in a few minutes."
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}
});
};
var decodeEntities = (function() {
// this prevents any overhead from creating the object each time
var element = document.createElement('div');
function decodeHTMLEntities (str) {
if(str && typeof str === 'string') {
// strip script/html tags
str = str.replace(/