将传感器值从Beaglebone Black发送到Windows上的套接字服务器

Question

我的Beaglebone Black上有一个python TCP套接字客户端代码，它从传感器读取数据并将其发送到服务器。我的服务器在Visual Studio的Windows上，它是用C#编写的。Beaglebone Black和Windows PC使用Putty通过SSH连接。问题是服务器和客户端看不到对方。然而，当我使用Ubuntu PC(用python编写的服务器(而不是Windows时，一切都可以工作。

你能帮我建立连接吗。我认为问题出在服务器端。

附言：由于将来的计划，服务器必须用C#编写。

这是我的C#服务器代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace Server_Tutorial
{
class Program
{
static void Main(string[] args)
{
IPAddress ip = Dns.GetHostEntry("192.168.7.1").AddressList[0];
TcpListener server = new TcpListener(ip, 7000);
TcpClient client = default(TcpClient);
try
{
server.Start();
Console.WriteLine("Server started...");
Console.Read();
} catch (Exception ex)
{
Console.WriteLine(ex.ToString());
Console.Read();
}
while (true)
{
client = server.AcceptTcpClient();
byte[] receivedBuffer = new byte[100];
NetworkStream stream = client.GetStream();

stream.Read(receivedBuffer, 0, receivedBuffer.Length);
StringBuilder msg = new StringBuilder();
foreach (byte b in receivedBuffer)
{
if (b.Equals(00))
{
break;
}
else
{
msg.Append(Convert.ToChar(b).ToString());
}
}
Console.WriteLine(msg.ToString() + msg.Length);
}
}
}
}

这是python中的客户端代码：

import Adafruit_BBIO.ADC as ADC
import time
import socket
import sys
serverAddr = ('192.168.7.1', 7000)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect(serverAddr)
fsr = 'P9_40'
ADC.setup()
while True:
reading = ADC.read(fsr)*1000
reading = int(round(reading))
client.send(str(reading))
client.close()

这是在Ubuntu上运行的python中的服务器代码：

import socket
import sys
HOST = ''
PORT = 7000
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print('Socket created')
try:
s.bind((HOST, PORT))
except socket.error as msg:
print('Bind failed. ')
sys.exit()
print('Socket bind complete')
s.listen(10)
print('Socket now listening')
conn, addr = s.accept()
print('Connected to ' + addr[0] + ':' + str(addr[1]))
while True:
data = conn.recv(1024)
line = data.decode('UTF-8')    # convert to string (Python 3 only)
line = line.replace("n","")   # remove newline character
print( line )
s.close()

Answer 1

您是否尝试运行：netstat -a -b

在你的电脑上？

如果它显示您的端口7000已经被另一个TCP连接使用，您可以简单地切换到port 8080或您喜欢的其他端口以成功连接。