Arduino Uno + WifiShield：Telnet错误“拒绝连接”

我的新Arduino Uno + WifiShield出现问题。我想测试示例代码，通过arduino.cc或Arduino的IDE“WifiChatServer”发表：Arduino Uno + WifiShield：Telnet错误“拒绝连接”

#include <SPI.h> 
#include <WiFi.h> 

char ssid[] = "ssid"; // your network SSID (name) 
char pass[] = "password"; // your network password (use for WPA, or use  as key for WEP) 

int keyIndex = 0;   // your network key Index number (needed only for WEP) 

int status = WL_IDLE_STATUS; 

WiFiServer server(23); 

boolean alreadyConnected = false; // whether or not the client was connected previously 

void setup() { 
    //Initialize serial and wait for port to open: 
    Serial.begin(9600); 
    while (!Serial) { 
    ; // wait for serial port to connect. Needed for Leonardo only 
    } 

    // check for the presence of the shield: 
    if (WiFi.status() == WL_NO_SHIELD) { 
    Serial.println("WiFi shield not present"); 
    // don't continue: 
    while(true); 
    } 

    // attempt to connect to Wifi network: 
    while (status != WL_CONNECTED) { 
    Serial.print("Attempting to connect to SSID: "); 
    Serial.println(ssid); 
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:  
    status = WiFi.begin(ssid, pass); 

    // wait 10 seconds for connection: 
    delay(10000); 
    } 
    // start the server: 
    server.begin(); 
    // you're connected now, so print out the status: 
    printWifiStatus(); 
} 


void loop() { 
// wait for a new client: 
    WiFiClient client = server.available(); 


    // when the client sends the first byte, say hello: 
    if (client) { 
    if (!alreadyConnected) { 
     // clead out the input buffer: 
     client.flush();  
     Serial.println("We have a new client"); 
     client.println("Hello, client!"); 
     alreadyConnected = true; 
    } 

    if (client.available() > 0) { 
     // read the bytes incoming from the client: 
     char thisChar = client.read(); 
     // echo the bytes back to the client: 
     server.write(thisChar); 
     // echo the bytes to the server as well: 
     Serial.write(thisChar); 
    } 
    } 
} 


void printWifiStatus() { 
    Serial.print("SSID: "); 
    Serial.println(WiFi.SSID()); 

    // print your WiFi shield's IP address: 
    IPAddress ip = WiFi.localIP(); 
    Serial.print("IP Address: "); 
    Serial.println(ip); 

    // print the received signal strength: 
    long rssi = WiFi.RSSI(); 
    Serial.print("signal strength (RSSI):"); 
    Serial.print(rssi); 
    Serial.println(" dBm"); 
}

你也可以在这里查找代码：http://arduino.cc/en/Tutorial/WiFiChatServer

我没有做任何除外变化进入我的家庭无线连接数据。将代码上传到我的arduino后，控制器连接到wifi并打印他的ip地址，由我的路由器分配。此外，路由器上的连接设备列表中列出了arduino。

从我的笔记本电脑ping arduino成功！

尝试通过telnet（putty）连接到arduino时，显示错误“连接被拒绝”。我尝试使用另一个端口（8888/9999）和智能手机连接笔记本电脑上的禁用防火墙，每次都出现相同的错误。

这里有一个简单的ping和Telnet的请求Wireshark的捕获：http://imagizer.imageshack.us/v2/800x600q90/34/ayo5.png

任何人都有一个想法来解决这个问题？

来源

2014-01-22 JU5T1C3

我有一些类似的问题（与官方的WiFi屏蔽）。我通过使用较早版本的Arduino IDE解决了这个问题。我从1.0.5降级到1.0.3，它工作。也许你有同样的问题？

它至少值得一试！

来源

2014-01-24 21:09:48 Kad

无法解释它，但它使用完全相同的代码..荒谬的是它是最好的。 Thx的提示;-) – JU5T1C3

使用Arduino 1.05我遇到了同样的问题。我刚刚从Arduino 1.0.4中将WiFi库复制到Arduino 1.0.5，并且工作正常。

来源

2014-06-06 21:11:20 user3314444

Arduino Uno + WifiShield：Telnet错误“拒绝连接”

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