Bug Not responding on calling an API for joints' data on each frame

Hey there,
I'm trying to call a custom-made API on each frame that provides position vectors in JSON form which then I use to set the transforms of some spheres in my scene.
Unity becomes unresponsive after a few seconds.
Hardcoding all this data works fine..

Code (CSharp):

1. using UnityEngine;
2. using System.IO;
3.  
4. using System.Net;
5.  
6.  
7. public class manipulate: MonoBehaviour {
8.     public Transform avatar_trans;
9.  
10.     public TextAsset jsonFile;
11.     // public JointsResponse jointsReponse;
12.     public FrameData jsonFrameData;
13.  
14.     // public int counter = 1;
15.  
16.     public HttpWebRequest request;
17.     public HttpWebResponse response;
18.  
19.     public Transform root;
20.     public Transform lhipjoint;
21.     public Transform lfemur;
22.     public Transform ltibia;
23.     public Transform lfoot;
24.     public Transform ltoes;
25.     public Transform rhipjoint;
26.     public Transform rfemur;
27.     public Transform rtibia;
28.     public Transform rfoot;
29.     public Transform rtoes;
30.     public Transform lowerback;
31.     public Transform upperback;
32.     public Transform thorax;
33.     public Transform lowerneck;
34.     public Transform upperneck;
35.     public Transform head;
36.     public Transform lclavicle;
37.     public Transform lhumerus;
38.     public Transform lradius;
39.     public Transform lwrist;
40.     public Transform lhand;
41.     public Transform lfingers;
42.     public Transform lthumb;
43.     public Transform rclavicle;
44.     public Transform rhumerus;
45.     public Transform rradius;
46.     public Transform rwrist;
47.     public Transform rhand;
48.     public Transform rfingers;
49.     public Transform rthumb;
50.  
51.     // Start is called before the first frame update
52.     void Start() {
53.         root = avatar_trans.Find("root");
54.  
55.         lhipjoint = root.Find("lhipjoint");
56.         lfemur = lhipjoint.Find("lfemur");
57.         rhipjoint = root.Find("rhipjoint");
58.         rfemur = rhipjoint.Find("rfemur");
59.  
60.  
61.  
62.         root = avatar_trans.Find("root");
63.         lhipjoint = root.Find("lhipjoint");
64.         lfemur = lhipjoint.Find("lfemur");
65.         ltibia = lfemur.Find("ltibia");
66.         lfoot = ltibia.Find("lfoot");
67.         ltoes = lfoot.Find("ltoes");
68.         rhipjoint = root.Find("rhipjoint");
69.         rfemur = rhipjoint.Find("rfemur");
70.         rtibia = rfemur.Find("rtibia");
71.         rfoot = rtibia.Find("rfoot");
72.         rtoes = rfoot.Find("rtoes");
73.         lowerback = root.Find("lowerback");
74.         upperback = root.Find("upperback");
75.         thorax = upperback.Find("thorax");
76.         lowerneck = thorax.Find("lowerneck");
77.         upperneck = thorax.Find("upperneck");
78.         head = upperneck.Find("head");
79.         lclavicle = upperneck.Find("lclavicle");
80.         lhumerus = lclavicle.Find("lhumerus");
81.         lradius = lhumerus.Find("lradius");
82.         lwrist = lradius.Find("lwrist");
83.         lhand = lwrist.Find("lhand");
84.         lfingers = lhand.Find("lfingers");
85.         lthumb = lfingers.Find("lthumb");
86.         rclavicle = upperneck.Find("rclavicle");
87.         rhumerus = rclavicle.Find("rhumerus");
88.         rradius = rhumerus.Find("rradius");
89.         rwrist = rradius.Find("rwrist");
90.         rhand = rwrist.Find("rhand");
91.         rfingers = rhand.Find("rfingers");
92.         rthumb = rfingers.Find("rthumb");
93.  
94.  
95.  
96.         request = (HttpWebRequest) WebRequest.Create("http://localhost:8000/motion/0"); // Set Motion
97.  
98.         response = (HttpWebResponse) request.GetResponse();
99.  
100.         request = (HttpWebRequest) WebRequest.Create("http://localhost:8000/frame");
101.  
102.         response = (HttpWebResponse) request.GetResponse();
103.  
104.         var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
105.  
106.         print(responseString);
107.         jsonFrameData = JsonUtility.FromJson < FrameData > (responseString);
108.         // string jsonString = JsonSerializer.Serialize(responseString);
109.  
110.  
111.         // print(jsonFrameData.jointdata[0]);
112.  
113.         setJoints(0);
114.  
115.  
116.     }
117.  
118. int counter = 1;
119.     // Update is called once per frame
120.     void FixedUpdate() {
121.     print(counter);
122.        
123.         // if (counter % 5 == 0) {
124.         request = (HttpWebRequest) WebRequest.Create("http://localhost:8000/frame");
125.  
126.         response = (HttpWebResponse) request.GetResponse();
127.             counter = 0;
128.         var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
129.         jsonFrameData = JsonUtility.FromJson < FrameData > (responseString);
130.         // }
131.  
132.  
133.  
134.         // print(responseString);
135.  
136.  
137.         setJoints(0);
138.         counter = counter + 1;
139.  
140.  
141.  
142.  
143.     }
144.  
145.     Vector3 floatToVector(double x, double y, double z) {
146.         return new Vector3((float) x, (float) y, (float) z);
147.     }
148.  
149.     void setJoints(int i) {
150.         root.position = jsonFrameData.jointdata[i].get_joint("root");
151.         lhipjoint.position = jsonFrameData.jointdata[i].get_joint("lhipjoint");
152.         lfemur.position = jsonFrameData.jointdata[i].get_joint("lfemur");
153.         ltibia.position = jsonFrameData.jointdata[i].get_joint("ltibia");
154.         lfoot.position = jsonFrameData.jointdata[i].get_joint("lfoot");
155.         ltoes.position = jsonFrameData.jointdata[i].get_joint("ltoes");
156.         rhipjoint.position = jsonFrameData.jointdata[i].get_joint("rhipjoint");
157.         rfemur.position = jsonFrameData.jointdata[i].get_joint("rfemur");
158.         rtibia.position = jsonFrameData.jointdata[i].get_joint("rtibia");
159.         rfoot.position = jsonFrameData.jointdata[i].get_joint("rfoot");
160.         rtoes.position = jsonFrameData.jointdata[i].get_joint("rtoes");
161.         lowerback.position = jsonFrameData.jointdata[i].get_joint("lowerback");
162.         upperback.position = jsonFrameData.jointdata[i].get_joint("upperback");
163.         thorax.position = jsonFrameData.jointdata[i].get_joint("thorax");
164.         lowerneck.position = jsonFrameData.jointdata[i].get_joint("lowerneck");
165.         upperneck.position = jsonFrameData.jointdata[i].get_joint("upperneck");
166.         head.position = jsonFrameData.jointdata[i].get_joint("head");
167.         lclavicle.position = jsonFrameData.jointdata[i].get_joint("lclavicle");
168.         lhumerus.position = jsonFrameData.jointdata[i].get_joint("lhumerus");
169.         lradius.position = jsonFrameData.jointdata[i].get_joint("lradius");
170.         lwrist.position = jsonFrameData.jointdata[i].get_joint("lwrist");
171.         lhand.position = jsonFrameData.jointdata[i].get_joint("lhand");
172.         lfingers.position = jsonFrameData.jointdata[i].get_joint("lfingers");
173.         lthumb.position = jsonFrameData.jointdata[i].get_joint("lthumb");
174.         rclavicle.position = jsonFrameData.jointdata[i].get_joint("rclavicle");
175.         rhumerus.position = jsonFrameData.jointdata[i].get_joint("rhumerus");
176.         rradius.position = jsonFrameData.jointdata[i].get_joint("rradius");
177.         rwrist.position = jsonFrameData.jointdata[i].get_joint("rwrist");
178.         rhand.position = jsonFrameData.jointdata[i].get_joint("rhand");
179.         rfingers.position = jsonFrameData.jointdata[i].get_joint("rfingers");
180.         rthumb.position = jsonFrameData.jointdata[i].get_joint("rthumb");
181.     }
182.  
183.  
184. }

 

You shouldn't be doing anything but physics in FixedUpdate().

You certainly should not be hitting a web request there.

Hit the web request in a coroutine (could even be a loop) and then process the data in Update()

ONLY once you have the data ready, then if it is actually physics-system related, THEN do the work in FixedUpdate()