错误信息：
1。Content Object flex.messaging.messages.ErrorMessage
2。Detected duplicate HTTP-based FlexSessions, generally due to the remote host disabling session cookies. Session cookies must be enabled to manage the client connection correctly.
3。String Server.Processing.DuplicateSessionDetected
描述：如下代码段在运行时，Foreach执行第一次是出错，第二次正确，如此循环至foreach终止。 问题出在什么方？高手请帮看一下，急等！！！！
foreach (CPNOLTPackageInfo cpn in requestMethod.cpnOltPackageInfo)
{
var slotcode = cpn.slotCode;
// 封装一个Message
AMFPostData cpnoltpostdata = new AMFPostData(AMFType.AMF3, 0, 1);
cpnoltpostdata.AddTargetAndResponse("null", "null");
RemotingMessage cpnoltmessage = new RemotingMessage();
cpnoltmessage.operation = "listPortInfoByOltPkg";
cpnoltmessage.source = null;
cpnoltmessage.timestamp = 0;
cpnoltmessage.clientId = null;
cpnoltmessage.timeToLive = 0;
cpnoltmessage.messageId = Guid.NewGuid().ToString().ToUpper();
cpnoltmessage.destination = "cpnMgmtFacade";
List<object> cpnoltbody = new List<object>();
cpnoltbody.Add(int.Parse(shOltID));
cpnoltbody.Add(slotcode);
cpnoltmessage.body = cpnoltbody; ;
Dictionary<string, object> cpnobjoltHeaders = new Dictionary<string, object>();
cpnobjoltHeaders.Add("DSEndpoint", "my-amf");
cpnobjoltHeaders.Add("DSId", Guid.NewGuid().ToString().ToUpper());
cpnoltmessage.headers = objoltHeaders;
AMFPostDataBody cpnoltpostdatabody = new AMFPostDataBody(DataType.Array, 1);
cpnoltpostdatabody.AddData(DataType.AMFdata, cpnoltmessage);
cpnoltpostdata.AddBody(cpnoltpostdatabody);
byte[] cpnoltdata = cpnoltpostdata.Message.ToArray();
requestMethod.PostOltPortData(cpnoltdata, sh_Url, currentCookie);//请求查询
}
