📄 udpcsample.htm

📁 tcpip for dos
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<HTML><HEAD><TITLE>DOS Internet Programming APIs</TITLE>
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<META content="He Lingsong" name=Author>
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<META content=DOS,FTP,HTTP,email,smtp,web,www,server,tcp,wattcp,free 
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<BODY><B><FONT color=#cc0000>UDP客户端程序样例：</FONT></B> 
<BLOCKQUOTE><TT><FONT color=#006600><FONT size=+1>#include 
  &lt;string.h&gt;</FONT></FONT></TT> <BR><TT><FONT color=#006600><FONT 
  size=+1>#include &lt;stdio.h&gt;</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>#include &lt;conio.h&gt;</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT size=+1>#include 
  &lt;time.h&gt;</FONT></FONT></TT> <BR><TT><FONT color=#006600><FONT 
  size=+1>#include &lt;dos.h&gt;</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>#include "tcplib.h"</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT 
  size=+1>//=================================================</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT size=+1>int main(void)</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT size=+1>{UDPSocket 
  sendSock;</FONT></FONT></TT> <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;int port,len;</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>&nbsp;char 
  sendBuff[1024],buf[256],ip[32];</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>&nbsp;printf("\nUDP Client\n");</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT size=+1>&nbsp;port=8888;</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;strcpy(ip,"202.114.6.48");</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>&nbsp;sendSock=new_udpsocket();</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;init_tcplib();</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT 
  size=+1>&nbsp;open_udp(sendSock,ip,port);</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>&nbsp;sprintf(sendBuff, "This is a test: sending 
  packet \n");</FONT></FONT></TT> <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;udp_send(sendSock,sendBuff,strlen(sendBuff));</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;len=udp_recv_time(sendSock,buf,256,1000);</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT size=+1>&nbsp;buf[len]=0;</FONT></FONT></TT> 
  <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;close_udp(sendSock);</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>&nbsp;printf("Receive: 
  %s\n",buf);</FONT></FONT></TT> <BR><TT><FONT color=#006600><FONT 
  size=+1>&nbsp;release_udpsocket(sendSock);</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>&nbsp;return 0;</FONT></FONT></TT> <BR><TT><FONT 
  color=#006600><FONT size=+1>}</FONT></FONT></TT></BLOCKQUOTE> </BODY></HTML>
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