我要评论学习视频：https://www.bilibili.com/video/bv1fj411v7hv?p=15
socket通信传输的字节是什么内容，客户端和服务端要知道这个字节是文件，是字符串还是其他？应该设计一个协定。例如在内容字节前面插入一个字节表示内容形式，0代表字符串，1代表文件......
private void button1_click(object sender, eventargs e)
{
socket socket = new socket(sockettype.stream, protocoltype.tcp);
ipaddress ip = ipaddress.parse("192.169.11.87");
ipendpoint endpoint = new ipendpoint(ip, 5000);
socket.connect(endpoint);
string msg = "消息来了";
byte[] buffer = encoding.utf8.getbytes(msg);
//如何在buffer前面加一个字节呢，可以使用集合
list<byte> bufferlist = new list<byte>();
bufferlist.add(0);
bufferlist.addrange(buffer);
byte[] newbuffer = bufferlist.toarray();
socket.send(newbuffer);
}
private void button1_click(object sender, eventargs e)
{
socket socket = new socket(sockettype.stream, protocoltype.tcp);
ipaddress ip = ipaddress.parse("192.169.11.87");
ipendpoint endpoint = new ipendpoint(ip, 5000);
socket.connect(endpoint);
string path = string.empty;
using (filestream fsread = new filestream(path, filemode.open, fileaccess.read))
{
byte[] buffer = new byte[1024 * 1024 * 5];
int r = fsread.read(buffer, 0, buffer.length);
list<byte> newbuffer = new list<byte>();
newbuffer.add(1);
newbuffer.addrange(buffer);
// 是r+1
socket.send(newbuffer.toarray(), 0, r+1, socketflags.none);
}
}
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