网站banner图做多大sem竞价教程

PHP写的服务器端，C#写的客户端

<?php//确保在连接客户端时不会超时
set_time_limit(0);
//设置IP和端口号
$address = "127.0.0.1";
$port = 2049; //调试的时候，可以多换端口来测试程序！
/*** 创建一个SOCKET * AF_INET=是ipv4 如果用ipv6，则参数为 AF_INET6* SOCK_STREAM为socket的tcp类型，如果是UDP则使用SOCK_DGRAM
*/
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP) or die("socket_create() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");
//阻塞模式
socket_set_block($sock) or die("socket_set_block() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");
//绑定到socket端口
$result = socket_bind($sock, $address, $port) or die("socket_bind() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");
//开始监听
$result = socket_listen($sock, 4) or die("socket_listen() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n");
echo "OK\nBinding the socket on $address:$port ... ";
echo "OK\nNow ready to accept connections.\nListening on the socket ... \n";
do { // never stop the daemon//它接收连接请求并调用一个子连接Socket来处理客户端和服务器间的信息$msgsock = socket_accept($sock) or  die("socket_accept() failed: reason: " . socket_strerror(socket_last_error()) . "/n");//读取客户端数据echo "Read client data \n";//socket_read函数会一直读取客户端数据,直到遇见\n,\t或者\0字符.PHP脚本把这写字符看做是输入的结束符.$buf = socket_read($msgsock, 8192);echo "Received msg: $buf   \n";//数据传送 向客户端写入返回结果$msg = "welcome \n";socket_write($msgsock, $msg, strlen($msg)) or die("socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n");//一旦输出被返回到客户端,父/子socket都应通过socket_close($msgsock)函数来终止socket_close($msgsock);
} while (true);
socket_close($sock);
?>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Net;namespace UpdClient
{class Program{static void Main(string[] args){//设定服务器IP地址  IPAddress ip = IPAddress.Parse("127.0.0.1");Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);try{clientSocket.Connect(new IPEndPoint(ip, 2049)); //配置服务器IP与端口  Console.WriteLine("连接服务器成功");}catch{Console.WriteLine("连接服务器失败，请按回车键退出！");return;}string welcome = "watch";byte[] data = new byte[1024];data = Encoding.ASCII.GetBytes(welcome);clientSocket.SendTo(data, data.Length, SocketFlags.None, new IPEndPoint(ip, 2048));//通过clientSocket接收数据  byte[] result = new byte[1024];int receiveLength = clientSocket.Receive(result);Console.WriteLine("接收服务器消息：{0}", Encoding.ASCII.GetString(result, 0, receiveLength)); }}
}