$.support.cors = true;

/**
 * url: 特定功能的Url，如：/Login_webSdkAuth.action
 * callback: 回调函数 
 * requestType: The type of request
 * to make ("POST" or "GET"), default is "POST". 
 * requestJson: 请求参数
 */
function chatRequest(url, requestType, requestJson, callback) {
	if (requestType == null)
		requestType = "POST";

	var headers;
	var contentType;
	var requestData;
	
	if (requestType == "POST" || requestType == "PUT"){
		contentType = "application/json;charset=UTF-8";
		requestData = JSON.stringify(requestJson);
	} else {
		requestData = requestJson;
	}
	
	var headerJson = {};
	if (getServerKey()){
		headerJson.serverKey = getServerKey();
	}
	
	if (getApiKey()){
		headerJson.apiKey = getApiKey();
	}
	console.log(callback)
	if (callback) { // async call
		$.ajax({
			url : _urlHeadAjax + url,
			async : true,
			crossDomain: true,
			type : requestType,
			data : requestData,
			headers: headerJson,
			cache: false,
			contentType : contentType,
			success : function(responseJson) {
				console.log(responseJson)
				callback(responseJson);
				//showResult(0, responseJson, url + ":");
			},
			error : function(responseJson) {
				//showResult(0, responseJson.responseText, url + " Err:");
			}
		});
	} else { // sync call
		var rst;
		$.ajax({
			url : _urlHeadAjax + url,
			async : false,
			crossDomain: true,
			type : requestType,
			data : requestData,
			headers: headerJson,
			cache: false,
			contentType : contentType,
			success : function(responseJson) {
				console.log(responseJson)
				rst = responseJson;
				//showResult(0, responseJson, url + ":");
			},
			error : function(responseJson) {
				//showResult(0, responseJson.responseText, url + " Err:");
			}
		});

		return rst;
	}
}

function getServerKey(){
	return sessionStorage.getItem("serverKey");
}

function getApiKey(){
	return sessionStorage.getItem("apiKey");;
}

function AirSession() {
	this.sessionId = "";
	this.sessionIndex = 0;
	this.sessionState = SESSION_STATE_IDLE;

	this.mediaState = MEDIA_STATE_IDLE;
	this.mediaSpeaker = null;

	this.lock = 0;
}