Something about Socket

本文提供了一个简单的Java Socket通信示例,包括服务端和客户端的实现代码,展示了如何通过Socket进行基本的数据交换。

Java很强大,socket 通信几句就搞定。

服务端和客户端(最差的代码):

import java.net.*;
import java.io.*;

class ser
{
	public static void main(String[] aa)
	{
		try{
		ServerSocket sr=new ServerSocket(3000);
		Socket s=sr.accept();
		DataOutputStream o=new DataOutputStream(s.getOutputStream());
		o.writeUTF("test Socket~~~~~~~~~~~~~~");
		}catch(Exception ee){};
		
	}
}

class cli
{
	public static void main(String[] a)
	{
		try{
		Socket c=new Socket("127.0.0.1",3000);
		DataInputStream i=new DataInputStream(c.getInputStream());
		System.out.println(i.readUTF());
		}catch(Exception e){}
	}
}
 
int bufferevent_socket_connect(struct bufferevent *bev, struct sockaddr *sa, int socklen) { struct bufferevent_private *bufev_p = EVUTIL_UPCAST(bev, struct bufferevent_private, bev); evutil_socket_t fd; int r = 0; int result=-1; int ownfd = 0; _bufferevent_incref_and_lock(bev); if (!bufev_p) goto done; fd = bufferevent_getfd(bev); if (fd < 0) { if (!sa) goto done; fd = socket(sa->sa_family, SOCK_STREAM, 0); if (fd < 0) goto done; if (evutil_make_socket_nonblocking(fd)<0) goto done; ownfd = 1; } if (sa) { #ifdef WIN32 if (bufferevent_async_can_connect(bev)) { bufferevent_setfd(bev, fd); r = bufferevent_async_connect(bev, fd, sa, socklen); if (r < 0) goto freesock; bufev_p->connecting = 1; result = 0; goto done; } else #endif r = evutil_socket_connect(&fd, sa, socklen); if (r < 0) goto freesock; } #ifdef WIN32 /* ConnectEx() isn't always around, even when IOCP is enabled. * Here, we borrow the socket object's write handler to fall back * on a non-blocking connect() when ConnectEx() is unavailable. */ if (BEV_IS_ASYNC(bev)) { event_assign(&bev->ev_write, bev->ev_base, fd, EV_WRITE|EV_PERSIST, bufferevent_writecb, bev); } #endif bufferevent_setfd(bev, fd); if (r == 0) { if (! be_socket_enable(bev, EV_WRITE)) { bufev_p->connecting = 1; result = 0; goto done; } } else if (r == 1) { /* The connect succeeded already. How very BSD of it. */ result = 0; bufev_p->connecting = 1; event_active(&bev->ev_write, EV_WRITE, 1); } else { /* The connect failed already. How very BSD of it. */ bufev_p->connection_refused = 1; bufev_p->connecting = 1; result = 0; event_active(&bev->ev_write, EV_WRITE, 1); } goto done; freesock: _bufferevent_run_eventcb(bev, BEV_EVENT_ERROR); if (ownfd) evutil_closesocket(fd); /* do something about the error? */ done: _bufferevent_decref_and_unlock(bev); return result; } 分析这段代码的逻辑
最新发布
10-01
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