Easy Wireless Communications with the Doit ESP-13 Shield

1void setup() {
2  // put your setup code here, to run once:
3  Serial.begin(9600);
4  //  Serial.println("ready jeeves");
5}
6
7void loop() {
8  if(Serial.available())
9  {
10    String a = Serial.readStringUntil("\
11");  
12    Serial.flush();
13    Serial.println("client1 heard the server say - " + a);
14  }
15  else
16  {
17     delay(1000);
18     Serial.println("client1 is waiting for a data  transmission from the server");
19  }
20  
21}
22
23

1void setup() {
2  // put your setup code here, to run once:
3  Serial.begin(9600);
4
5  //  Serial.println("ready jeeves");
6}
7
8void loop() {
9  if(Serial.available())
10
11  {
12    String a = Serial.readStringUntil("\
13");  
14    Serial.flush();
15
16    Serial.println("client1 heard the server say - " + a);
17  }
18  else
19
20  {
21     delay(1000);
22     Serial.println("client1 is waiting for a data
23  transmission from the server");
24  }
25  
26}
27
28

1'''
2    Simple socket server using threads
3'''
4 
5import socket
6import  sys
7from _thread import *
8
9HOST = ''   # Symbolic name, meaning all available  interfaces
10PORT = 9000 # Arbitrary non-privileged port
11 
12s = socket.socket(socket.AF_INET,  socket.SOCK_STREAM)
13print ('Socket created')
14 
15#Bind socket to local host  and port
16try:
17    s.bind((HOST, PORT))
18except socket.error as msg:
19    print ('Bind failed. Error Code : ' + str(msg[0]) + ' Message ' + msg[1])
20    sys.exit()
21     
22print ('Socket bind complete')
23 
24#Start listening  on socket
25s.listen(10)
26print ('Socket now listening')
27 
28#Function for  handling connections. This will be used to create threads
29def clientthread(conn):
30    #Sending message to connected client
31    sendstr = 'Welcome to the server.  Ready to receive your data.'
32    
33    conn.send(sendstr.encode('utf-8')) #send  only takes string
34
35    try:
36
37    #infinite loop so that function do  not terminate and thread do not end.
38      while True:
39         
40        #Receiving  from client
41        data = conn.recv(1024)
42        print(str(data.decode()))
43        #print(str(data))
44        #conn.send(data)
45        if not data: 
46            break
47     
48        #conn.sendall(reply.encode('utf-8'))
49
50    except KeyboardInterrupt:
51      pass
52
53    #came out of loop
54    conn.close()
55    print ('Socket closed by server')
56 
57#now keep talking with the client
58while  1:
59    #wait to accept a connection - blocking call
60    conn, addr = s.accept()
61    print ('Connected with ' + addr[0] + ':' + str(addr[1]))
62     
63    #start  new thread takes 1st argument as a function name to be run, second is the tuple  of arguments to the function.
64    start_new_thread(clientthread ,(conn,))
65  
66s.close()