first commit

.gitignore

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+*.png
+*.jpg
+*.bmp
+*.jpeg

main.py

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+import cv2
+import numpy as np
+import urllib.request
+from datetime import datetime
+recent=[]
+history=[]
+width=720
+height=100
+red=(0x00,0x00,0xff)
+orange=(0x00,0x66,0xff)
+yellow=(0x00,0xcc,0xff)
+light_green=(0x33,0xff,0xcc)
+green=(0x00,0xcc,0x00)
+def update_history():
+    average=0
+    for i in recent:
+        average+=i
+    average/=len(recent)
+    if len(history)>=144:
+        del(history[0])
+    history.append(average)
+def fill(img,pos,color):
+    for i in range(5):
+        for j in range(100):
+            img[j,i+5*pos,:]=[color[0]%256,color[1]%256,color[2]%256]
+def update_graph():
+    img=np.ones([height,width,3],dtype=np.uint8)
+    for i,delay in enumerate(history):
+        if delay>=5000:
+            fill(img,i,red)
+        elif delay>=2000:
+            fill(img,i,orange)
+        elif delay>=1000:
+            fill(img,i,yellow)
+        elif delay>=500:
+            fill(img,i,light_green)
+        else:
+            fill(img,i,green)
+    cv2.imwrite("image.bmp", img)        
+
+
+    
+def testConnect(url):
+    try:
+        time1=datetime.now().timestamp()
+        code=urllib.request.urlopen(url,timeout=5).getcode()
+        time2=datetime.now().timestamp()
+        delay=int((time2-time1)*1000)
+    except:
+        code=404
+    if code/100>=4:
+        delay=10000
+    return (code,delay)
+
+if __name__=="__main__":
+    lastminute=-1
+    while True:
+        if datetime.now().second==0 and datetime.now().minute!=lastminute:
+        # if True:
+            (code,delay)=testConnect("https://blog.clf3.org")
+            print(code,end=" ")
+            if code/100<=3:
+                print("connected",delay,"ms")
+            else:
+                print("error")
+            if len(recent)<10:
+                recent.append(delay)
+            else:
+                update_history()
+                update_graph()
+                recent=[]
+                recent.append(delay)
+            lastminute=datetime.now().minute