我用的是UDP连接,在本地或者局域网都没有问题,可是放到服务器就不行了,怎么回事?另外还有一个诡异的现象,另一个朋友编译的文件放在服务器当接收的,我自己这边发送就能收到
他的源码我编译一下,送到服务器上,就接收不到,各位帮我看看,是不是我写错了??服务端:using System;
using System.Net;
using System.Net.Sockets;
using System.Text;namespace Test2
{
class Program
{
static void Main(string[] args)
{
int recv;
byte[] data = new byte[1024]; //构建TCP 服务器 //得到本机IP,设置TCP端口号
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 63338);
using (Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
{
newsock.Bind(ipep);
Console.WriteLine("绑定网络地址 {0}", Dns.GetHostName());
Console.WriteLine("等待客户机连接");
IPEndPoint aaa = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)aaa;
data = new byte[1024];
recv = newsock.ReceiveFrom(data, ref Remote);
Console.WriteLine("收到:" + Encoding.ASCII.GetString(data).Trim('\0'));
string welcome = "Welcome ! ";
data = Encoding.ASCII.GetBytes(welcome);
newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
System.Threading.Thread.Sleep(200);
}
}
}
}客户端:using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace Test
{
class Class1
{ static void Main(string[] args)
{ byte[] data;
string input = "hee";
string stringData;
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("223.4.21.***"), 63338);
Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); while (true)
{
Console.WriteLine("请输入!");
input = Console.ReadLine();
data = Encoding.ASCII.GetBytes(input);
server.SendTo(data, data.Length, SocketFlags.None, ipep); IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)sender;
data = new byte[1024];
int recv = server.ReceiveFrom(data, ref Remote);
stringData = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine("收到:" + stringData);
}
} }
}
他的源码我编译一下,送到服务器上,就接收不到,各位帮我看看,是不是我写错了??服务端:using System;
using System.Net;
using System.Net.Sockets;
using System.Text;namespace Test2
{
class Program
{
static void Main(string[] args)
{
int recv;
byte[] data = new byte[1024]; //构建TCP 服务器 //得到本机IP,设置TCP端口号
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 63338);
using (Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
{
newsock.Bind(ipep);
Console.WriteLine("绑定网络地址 {0}", Dns.GetHostName());
Console.WriteLine("等待客户机连接");
IPEndPoint aaa = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)aaa;
data = new byte[1024];
recv = newsock.ReceiveFrom(data, ref Remote);
Console.WriteLine("收到:" + Encoding.ASCII.GetString(data).Trim('\0'));
string welcome = "Welcome ! ";
data = Encoding.ASCII.GetBytes(welcome);
newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
System.Threading.Thread.Sleep(200);
}
}
}
}客户端:using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
namespace Test
{
class Class1
{ static void Main(string[] args)
{ byte[] data;
string input = "hee";
string stringData;
IPEndPoint ipep = new IPEndPoint(IPAddress.Parse("223.4.21.***"), 63338);
Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); while (true)
{
Console.WriteLine("请输入!");
input = Console.ReadLine();
data = Encoding.ASCII.GetBytes(input);
server.SendTo(data, data.Length, SocketFlags.None, ipep); IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)sender;
data = new byte[1024];
int recv = server.ReceiveFrom(data, ref Remote);
stringData = Encoding.ASCII.GetString(data, 0, recv);
Console.WriteLine("收到:" + stringData);
}
} }
}
{
int recv;
byte[] data = new byte[1024];
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
Socket newsock = new Socket(AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
newsock.Bind(ipep);
Console.WriteLine("Waiting for a client...");
IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
EndPoint Remote = (EndPoint)(sender);
recv = newsock.ReceiveFrom(data, ref Remote);
Console.WriteLine("Message received from {0}:", Remote.ToString());
Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
string welcome = "Welcome to my test server";
data = Encoding.ASCII.GetBytes(welcome);
newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
while(true)
{
data = new byte[1024];
recv = newsock.ReceiveFrom(data, ref Remote);
Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
newsock.SendTo(data, recv, SocketFlags.None, Remote);
}
}
这个没有关系,只是一条通知信息,基本能收到就可以了,就算收不到也不要紧,最多就是客户端没有完全同步而已,集中条件下还是会重发的 这个基本不可能做成tcp的,同时会发出很多通知