[英]Lightstreamer create a session
我正在尝试使用LightStreamer
连接到IG索引流API,并且正在研究本教程http://www.lightstreamer.com/docs/client_generic_base/Network%20Protocol%20Tutorial.pdf
通过执行以下操作,我已成功创建了流会话(第16页4.1-/lightstreamer/create_session.txt):
public void ConnectToLightStreamer(Credentials credentials)
{
var LightStreamerRequest = (HttpWebRequest)WebRequest.Create(credentials.LIGHTSTREAMERENDPOINT + "/lightstreamer/create_session.txt");
LightStreamerRequest.Method = "POST";
LightStreamerRequest.ContentType = "application/x-www-form-urlencoded";
LightStreamerRequest.Headers.Add("Cache-Control", "no-cache");
using (var streamWriter = new StreamWriter(LightStreamerRequest.GetRequestStream()))
{
string Body = "LS_user=" + credentials.CLIENTID + "&LS_password=CST-" + credentials.CST + "|XST-" + credentials.SECURITY_TOKEN + "&LS_adapter_set=DEFAULT&LS_polling=true&LS_polling_millis=0&LS_idle_millis=0&LS_report_info=true";
streamWriter.Write(Body);
streamWriter.Flush();
streamWriter.Close();
}
var httpResponse = (HttpWebResponse)LightStreamerRequest.GetResponse();
Stream stream = httpResponse.GetResponseStream();
using (stream)
{
StreamReader reader = new StreamReader(stream, Encoding.UTF8);
string responseString = reader.ReadToEnd();
string[] SessionData = responseString.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
string[] sessionID = SessionData[1].Split(':');
credentials.SESSIONID = sessionID[1];
string[] controlAddress = SessionData[2].Split(':');
credentials.CONTROLADDRESS = controlAddress[1];
Console.WriteLine(responseString);
Console.WriteLine("CONNECTED");
Console.WriteLine(Environment.NewLine);
Console.WriteLine(Environment.NewLine);
}
}
我已经通过执行以下操作成功绑定了会话(第18/19页,/ lightstreamer / bind_session.txt):
public void BindSession(Credentials credentials)
{
var LightStreamerRequest = (HttpWebRequest)WebRequest.Create(credentials.LIGHTSTREAMERENDPOINT + "/lightstreamer/bind_session.txt");
LightStreamerRequest.Method = "POST";
LightStreamerRequest.ContentType = "application/x-www-form-urlencoded";
LightStreamerRequest.Headers.Add("Cache-Control", "no-cache");
using (var streamWriter = new StreamWriter(LightStreamerRequest.GetRequestStream()))
{
string Body = "LS_user=" + credentials.CLIENTID + "&LS_session=" + credentials.SESSIONID + "&LS_password=CST-" + credentials.CST + "|XST-" + credentials.SECURITY_TOKEN + "&LS_adapter_set=DEFAULT&LS_polling=true&LS_polling_millis=0&LS_idle_millis=0&LS_report_info=true&LS_polling_millis=1000";
streamWriter.Write(Body);
streamWriter.Flush();
streamWriter.Close();
}
var httpResponse = (HttpWebResponse)LightStreamerRequest.GetResponse();
Stream stream = httpResponse.GetResponseStream();
using (stream)
{
StreamReader reader = new StreamReader(stream, Encoding.UTF8);
string responseString = reader.ReadToEnd();
Console.WriteLine("BIND: " + responseString);
}
}
我的问题是我正在创建一个会话,并确定应该发送什么信息以及如何发送信息。 第20/21页/lightstreamer/control.txt。
我有以下内容,但我知道这是错误的,因为我没有得到任何回应:
public void ControlStreamer(Credentials credentials)
{
var LightStreamerRequest = (HttpWebRequest)WebRequest.Create(credentials.LIGHTSTREAMERENDPOINT + "/lightstreamer/control.txt");
LightStreamerRequest.Method = "POST";
LightStreamerRequest.ContentType = "application/x-www-form-urlencoded";
LightStreamerRequest.Headers.Add("Cache-Control", "no-cache");
using (var streamWriter = new StreamWriter(LightStreamerRequest.GetRequestStream()))
{
string Body = "LS_user=" + credentials.CLIENTID + "&LS_password=CST-" + credentials.CST + "|XST-" + credentials.SECURITY_TOKEN + "&LS_session=" + credentials.SESSIONID + "&LS_polling=true&LS_polling_millis=0&LS_idle_millis=0&LS_report_info=true&LS_polling_millis=1000&LS_table=" + credentials.SESSIONID + "&LS_op=add&LS_schema=MARKET:IX.D.DOW.DAILY.IP&LS_id=1&LS_mode=MERGE";
streamWriter.Write(Body);
streamWriter.Flush();
streamWriter.Close();
}
var httpResponse = (HttpWebResponse)LightStreamerRequest.GetResponse();
Stream stream = httpResponse.GetResponseStream();
using (stream)
{
StreamReader reader = new StreamReader(stream, Encoding.UTF8);
string responseString = reader.ReadToEnd();
Console.WriteLine("CONTROL: " + responseString);
}
}
我已经是一名全职开发人员大约一年了,这个项目正处于我的极限和理解的边缘。
我已经进行了整整2天以上的项目,但几乎看不懂文档。
如果有人能够向我解释我做错了什么,或指出一个可行的例子,我将不胜感激。
如果您的应用程序基于C#,则无需自己实现该协议,但是如果使用现成的客户端库,那就更好了。 它为您提供了更高层次的抽象,并且更加健壮和经过了很好的测试。
您可以从https://labs.ig.com/lightstreamer-downloads下载客户端库并访问完整的文档和示例。
您提到的网络协议教程仅在需要基于任何可用的Lightstreamer客户端库未涵盖的技术开发应用程序时才有用。
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