Add module to trigger a capture

server/capture.py

@@ -0,0 +1,30 @@
+import socket
+import sys
+import time
+
+# make sure multicast is being routed to the right interface ie.
+# sudo route add -net 224.0.0.0 netmask 240.0.0.0 dev enx00249b649e67
+
+def trigger_capture():
+    charid = 1
+    unitid = 1
+    groupid = 1
+
+    gtdate = time.gmtime()
+    now = str(gtdate.tm_year) + str(gtdate.tm_mon) + str(gtdate.tm_mday) + str(gtdate.tm_hour) + str(gtdate.tm_min) + str(gtdate.tm_sec)
+
+    SDATA = str(now)
+
+    print('Sending: ' + SDATA)
+    MCAST_GRP = '224.1.1.1'
+    MCAST_PORT = 5007
+    SCMD = chr(charid)
+    SUNIT = chr(unitid)
+    SGROUP = chr(groupid)
+    SEND = SCMD+SUNIT+SGROUP+SDATA
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
+    dev = 'eth0' + '\0'
+    sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 2)
+    sock.sendto(SEND.encode('utf-8'), (MCAST_GRP, MCAST_PORT))
+    sock.close()
+    print('Sent.')