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— | reference:library:clientconnect [2023/06/07 04:23] (当前版本) – 创建 - 外部编辑 127.0.0.1 | ||
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+ | [[zh: | ||
+ | ====== connect() ====== | ||
+ | |||
+ | ===== 描述 ===== | ||
+ | |||
+ | 连接到指定的IP地址和端口。返回值指示成功或失败。还支持使用域名的DNS查找。 | ||
+ | ===== 语法 ===== | ||
+ | |||
+ | client.connect(ip, | ||
+ | |||
+ | client.connect(URL, | ||
+ | ===== 参数、变量 ===== | ||
+ | |||
+ | ip:客户端将连接到的IP地址(4个字节的数组) | ||
+ | |||
+ | URL: | ||
+ | |||
+ | port: 端口,客户端将连接到(int型数据) | ||
+ | ===== 返回值 ===== | ||
+ | |||
+ | 如果连接成功,则返回true,否则为false。 | ||
+ | ===== 例子 ===== | ||
+ | <code cpp> | ||
+ | #include < | ||
+ | #include < | ||
+ | |||
+ | byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };// | ||
+ | byte ip[] = { 10, 0, 0, 177 };// | ||
+ | byte server[] = { 64, 233, 187, 99 }; // | ||
+ | |||
+ | EthernetClient client; | ||
+ | |||
+ | void setup() | ||
+ | |||
+ | { | ||
+ | Ethernet.begin(mac, | ||
+ | Serial.begin(9600);// | ||
+ | |||
+ | delay(1000); | ||
+ | |||
+ | Serial.println(" | ||
+ | )// | ||
+ | |||
+ | if (client.connect(server, | ||
+ | Serial.println(" | ||
+ | client.println(" | ||
+ | client.println(); | ||
+ | } | ||
+ | else { | ||
+ | Serial.println(" | ||
+ | } | ||
+ | } | ||
+ | |||
+ | void loop() | ||
+ | { | ||
+ | if (client.available()) { | ||
+ | char c = client.read(); | ||
+ | Serial.print(c); | ||
+ | } | ||
+ | |||
+ | if (!client.connected()) { | ||
+ | Serial.println(); | ||
+ | Serial.println(" | ||
+ | client.stop(); | ||
+ | for(;;) | ||
+ | ; | ||
+ | } | ||
+ | } | ||
+ | </ | ||
+ | |||
+ | |||
+ | [[zh: | ||
+ | |||