Question Hololens cannot send a request to the server .

I'm using Hololens to control Raspberry Pi by HTTP Request.
There is an error when sending HTTP Request:
· Unity 2019.4.10f1
· Hololens 1
· Hololen SDK version :10.0.17134.0
Through Hololens it shows：
Curl error 7: Failed to connect to 39.107.26.58 port 5000.Bad Access.

Code (CSharp):

1. [code=CSharp][code=CSharp]using System.Collections;
2.  
3. using UnityEngine;
4. using UnityEngine.Networking;
5.  
6.  
7. public class lightcontroller : MonoBehaviour
8. {
9.     public GameObject LightObj;
10.     public Light LightCon;
11.     public bool isopen = true;
12.  
13.     private void Start()
14.     {
15.         LightCon = LightObj.GetComponent<Light>();
16.     }
17.  
18.     public void OnSelect()
19.     {
20.         if (isopen)
21.         {
22.             LightCon.enabled = false;
23.             StartCoroutine(Get("http://39.107.26.58:5000/ledflage"));
24.             //StartCoroutine(GetRequest("http://baidu.com"));
25.             isopen = false;
26.             //Debug.Log(request);
27.         }
28.         else
29.         {
30.             LightCon.enabled = true;
31.             StartCoroutine(Get("http://39.107.26.58:5000/ledflage"));
32.             isopen = true;
33.             Debug.Log("on");
34.         }
35.     }
36.  
37.     private void OnMouseDown()
38.     {
39.         if (isopen)
40.         {
41.             LightCon.enabled = false;
42.             StartCoroutine(Get("http://39.107.26.58:5000/ledflage"));
43.             //StartCoroutine(GetRequest("http://baidu.com"));
44.             isopen = false;
45.             //Debug.Log(request);
46.         }
47.         else
48.         {
49.             LightCon.enabled = true;
50.             StartCoroutine(Get("http://39.107.26.58:5000/ledflage"));
51.             isopen = true;
52.             Debug.Log("on");
53.         }
54.     }
55.  
56.     IEnumerator Get(string url)
57.     {
58.         UnityWebRequest www = UnityWebRequest.Get(url);
59.         yield return www.SendWebRequest();
60.  
61.         if (www.isNetworkError || www.isHttpError)
62.         {
63.             Debug.Log(www.error);
64.         }
65.         else
66.         {
67.             Debug.Log("ok");
68.  
69.         }
70.     }
71.  
72. }

[/code][/code]


·The server on Raspberry Pi is based on python flask. Here is the code:

Code (CSharp):

1. [code=CSharp][code=CSharp]from flask import Flask
2. app = Flask(__name__)
3. TEMPERATURE1 = 0
4. HUMIDITY = 0
5. LEDFLAGE = 0
6.  
7.  
8.  
9.  
10. @app.route('/')
11. def hello_world():
12.     return 'Hello, World!'
13.  
14.  
15. @app.route('/temperature/<temperature>')
16. def getTempture(temperature):
17.     # show the user profile for that user
18.     global TEMPERATURE1
19.     TEMPERATURE1 = temperature
20.     return temperature
21.  
22.  
23. @app.route('/humidity/<humidity>')
24. def gethumidity(humidity):
25.     # show the user profile for that user
26.     global HUMIDITY
27.     HUMIDITY = humidity
28.     return humidity
29.  
30.  
31. @app.route('/temperature')
32. def return_temperature():
33.     return TEMPERATURE1
34.  
35.  
36. @app.route('/humidity')
37. def return_humidity():
38.     return HUMIDITY
39.  
40.  
41. @app.route('/1')
42. def readtemperatureandhumidity():
43.     return "温度:" + TEMPERATURE1 + "湿度："  + HUMIDITY
44.  
45.  
46. @app.route('/ledflage')
47. def changeLed1():
48.     global LEDFLAGE
49.     if LEDFLAGE == 0:
50.         LEDFLAGE = 1
51.         return "ledon"
52.     else:
53.         LEDFLAGE = 0
54.         return "ledoff"
55.  
56.  
57. @app.route('/2')
58. def checkLed1():
59.     global LEDFLAGE
60.     if LEDFLAGE == 1:
61.         return "ledon"
62.     else:
63.         return "ledoff"
64.  
65.  
66. @app.route('/3')
67. def text():
68.     #return "fanhuishuju"
69.     return '1', 200, [("Python", "Flask"), ("Python", "Tornado")]