tcp.md•910 B
# TCP 使用示例
<!-- verify -->
```cangjie
import std.net.*
import std.sync.*
let SERVER_PORT: UInt16 = 33333
let syncCounter = SyncCounter(1)
func runTcpServer() {
try (serverSocket = TcpServerSocket(bindAt: SERVER_PORT)) {
serverSocket.bind()
syncCounter.dec()
try (client = serverSocket.accept()) {
let buf = Array<Byte>(10, repeat: 0)
let count = client.read(buf)
// Server read 3 bytes: [1, 2, 3, 0, 0, 0, 0, 0, 0, 0]
println("Server read ${count} bytes: ${buf}")
}
}
}
main(): Int64 {
let fut = spawn {
runTcpServer()
}
syncCounter.waitUntilZero()
try (socket = TcpSocket("127.0.0.1", SERVER_PORT)) {
socket.connect()
socket.write([1, 2, 3])
}
fut.get()
return 0
}
```
运行结果：
```text
Server read 3 bytes: [1, 2, 3, 0, 0, 0, 0, 0, 0, 0]
```