Question

我有2个Raspberry pi和一台笔记本电脑，试图在以下架构中进行通信。 Rpi-1通过Wifi与Rpi 2通讯 RPi-2然后将数据转发到PC。 Rpi-1充当末端节点（稍后将添加更多） Rpi-2充当数据集中器，聚集来自所有终端节点的数据。我已经尝试过以这种方式使用TCP客户端服务器代码。 RPi-1的Rpi-1客户端， RPi1的Rpi2服务器和PC的客户端 PC作为RPi2的服务器这在技术上正确吗？使RPi2成为不同机器的客户端和服务器

我曾经尝试过将RPi 1单独与Rpi 2进行通信，并且将Rpi2仅与PC进行通信。它可以正常工作，但是当我将两者集成时，它并没有向PC发送任何数据。

import socket
host = '172.17.116.207'# ip of the DC
port = 5560

def setupSocket():
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.connect((host, port))
    return s

def sendReceive(s, message):
    s.send(str.encode(message))
    print("Message transmitted")
    reply = s.recv(1024)
    print("We have received a reply.")
    print("Send closing message.")
    s.send(str.encode("EXIT"))
    s.close()
    reply = reply.decode('utf-8')
    return reply

def transmit(message):
    s = setupSocket()
    response = sendReceive(s, message)
    return response



#code for RPi1
from time import sleep
from monitor_client import transmit
sleepTime = 20

def PhasorDataMonitor():
    message="aa0100341e3644853600000041b10000392b0000e36ace7ce36a31830444000009c4000042c80000447a0000461c40003c12d43f"
    print("Transmitting Data.")
    response = transmit(message)
    print(response)

while True:
    PhasorDataMonitor()
    sleep(sleepTime)


#code for Rpi2 
#Use this script to send and receive data over TCP/IP

import socket

#host_PC = '172.17.116.207'
host_PC = '172.17.116.35'
port = 5561

def setupSocket():
    s_PC = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s_PC.connect((host_PC, port))
    return s_PC

def sendReceive(s_PC, message):
    s_PC.send(str.encode(message))
    print("Message transmitted")
    reply = s_PC.recv(1024)
    print("We have received a reply.")
    print("Send closing message.")
    s_PC.send(str.encode("EXIT"))
    s_PC.close()
    reply = reply.decode('utf-8')
    return reply

def transmit(message):
    s_PC = setupSocket()
    response = sendReceive(s_PC, message)
    return response

#code in RPi2
import socket
from time import sleep
from monitor_client_DC import transmit
sleepTime = 5

host = '172.17.116.207'
port = 5560


def setupServer():
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    print("Socket created.")
    try:
        s.bind((host, port))
    except socket.error as msg:
        print(msg)
    print("Socket bind complete.")
    return s

def setupConnection():
    s.listen(1)
    conn, address = s.accept()
    print("Connected to: " + address[0] + ":" + str(address[1]))
    return conn




def dataTransfer(conn):
    while True:
        data = conn.recv(1024)
        data = data.decode('utf-8')
        print(data)
        reply = 'Closing socket'    
        conn.sendall(str.encode(reply))
        Print("Reply has been send.")

    conn.close()enter code here



s = setupServer()

while True:
    try:
        conn = setupConnection()
        dataTransfer(conn)
        sleep(sleepTime)
        message="aa0100341e3644853600000041b10000392b0000e36ace7ce36a31830444000009c4000042c80000447a0000461c40003c12d43f"
        print("Transmitting Data to PC.")
        response = transmit(message)
        print(response)
        sleep(sleepTime)
    except:
        break



#code in PC 
import socket




host = '172.17.116.35'
#host = '192.168.43.199'
port = 5561


def setupServer():
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    print("Socket created.")
    try:
        s.bind((host, port))
    except socket.error as msg:
        print(msg)
    print("Socket bind complete.")
    return s

def setupConnection():
    s.listen(1)
    conn, address = s.accept()
    print("Connected to: " + address[0] + ":" + str(address[1]))
    return conn

def dataTransfer(conn):
    while True:
        data = conn.recv(1024)
        data = data.decode('utf-8')
        print(data)
        reply = 'Unknow`enter code here` Command'    
        conn.sendall(str.encode(reply))
        Print("Reply has been send.")
    conn.close()

s = setupServer()

while True:
    try:
        conn = setupConnection()
        dataTransfer(conn)
    except:
        break

我应该在PC上收到消息，但是直到Rpi2为止

三台设备的TCP服务器客户端

0 个答案: