Dd9m2rvq

1public string Get(int id)
2        {
3            // pull data out of http context
4            List<string> traceParent = HttpContext.Current.Request.Headers["traceparent"].ToString().Split('-').ToList();
5            List<string> traceState = HttpContext.Current.Request.Headers["tracestate"].ToString().Split(',').ToList();
6
7            // parse out specific values
8            string traceVersion = traceParent.Count == 0 ? "00" : traceParent[0];
9            string traceId = traceParent.Count == 0 ? "00000000000000000000000000000000" : traceParent[1];
10            string traceParentId = traceParent.Count == 0 ? "0000000000000000" : traceParent[2];
11            string traceFlags = traceParent.Count == 0 ? "00" : traceParent[3];
12
13            // remove existing vendor key in trace state
14            traceState.RemoveAll(x => x.ToLower().StartsWith("jake"));
15            // insert new vendor key value in first location of trace state
16            traceState.Insert(0, "jake=" + traceParentId);
17            
18            // get new trace id to forward to the next process
19            string thisTraceId = "0102030405060708";
20
21            // restructure the data for http context
22            string tp = traceVersion + "-" + traceId + "-" + thisTraceId + "-" + traceFlags;
23            string ts = "";
24            traceState.ForEach(x => ts += x + ",");
25            ts = ts.Remove(ts.LastIndexOf(','));
26
27
28            // make next call with the http context included.
29            HttpClient client = new HttpClient();
30
31            // set http header data for the trace parent and state
32            client.DefaultRequestHeaders.Add("traceparent", tp);
33            client.DefaultRequestHeaders.Add("tracestate", ts);
34
35            // call subprocess
36            HttpResponseMessage response = client.GetAsync($@"https://localhost:44347/api/values/get").Result;
37
38
39            return "new TP: " + tp + "     new TS: " + ts + "   Which was passed to the sub api call.";
40        }