sock5.htm

如何快速有效实现Sock5代理

<P>&nbsp;m_n_sock5=s_sock5_tcp;</P>
<P>&nbsp;return 0;<BR>&#125;</P>
<P>//通过sock5发送udp数据<BR>int&nbsp; zf5_sock5_udp::send_sock5_udp(int s_udp,char *sz_buf,int n_len,struct sockaddr_in *p_addr)<BR>&#123;<BR>&nbsp;char sz_buf1[ZF5_BUFFER_SIZE3+2];<BR>&nbsp;int&nbsp; n_len1=0;<BR>&nbsp;sz_buf1[0]=0x00;<BR>&nbsp;sz_buf1[1]=0x00;<BR>&nbsp;sz_buf1[2]=0x00;<BR>&nbsp;sz_buf1[3]=0x01;<BR>&nbsp;&nbsp;&nbsp; memcpy((void *)&amp;sz_buf1[4],(void *)&amp;(p_addr-&gt;sin_addr.s_addr),4);<BR>&nbsp;&nbsp;&nbsp; memcpy((void *)&amp;sz_buf1[8],(void *)&amp;(p_addr-&gt;sin_port),2);<BR>&nbsp;struct sockaddr_in addr;<BR>&nbsp;addr.sin_family=AF_INET;<BR>&nbsp;addr.sin_addr.s_addr=inet_addr(m_sz_udp_srv);<BR>&nbsp;addr.sin_port=htons(m_n_port);<BR>&nbsp;if(addr.sin_addr.s_addr==INADDR_NONE)<BR>&nbsp;&#123;<BR>&nbsp; struct hostent *p=gethostbyname(m_sz_udp_srv);<BR>&nbsp; if(p==NULL)<BR>&nbsp; &#123;<BR>&nbsp;&nbsp; return -1;<BR>&nbsp; &#125;<BR>&nbsp; addr.sin_addr.s_addr=((LPIN_ADDR)p-&gt;h_addr)-&gt;s_addr;<BR>&nbsp;&#125;</P>
<P>&nbsp;memcpy(&amp;sz_buf1[10],sz_buf,n_len);</P>
<P>&nbsp;int n_ret=-1;<BR>&nbsp;n_ret=sendto(s_udp,sz_buf1,n_len+10,0,(struct sockaddr *)&amp;addr,sizeof(struct sockaddr_in ));</P>
<P>&nbsp;return n_ret;<BR>&#125;</P>
<P>//通过sock5接收udp数据<BR>int&nbsp; zf5_sock5_udp::recv_sock5_udp(int s_udp,char *sz_buf,struct sockaddr_in *p_addr)<BR>&#123;<BR>&nbsp;char sz_buf1[ZF5_BUFFER_SIZE3+2];<BR>&nbsp;struct sockaddr_in addr;<BR>&nbsp;int n_ret=-1;<BR>&nbsp;int n_len1=0;<BR>&nbsp;int n_len2=sizeof(struct sockaddr_in);<BR>&nbsp;n_ret=recvfrom(s_udp,sz_buf1,ZF5_BUFFER_SIZE3,0,(struct sockaddr *)&amp;addr,&amp;n_len2);<BR>&nbsp;if(n_ret==SOCKET_ERROR)<BR>&nbsp;&#123;<BR>&nbsp; return -1;<BR>&nbsp;&#125;</P>
<P>&nbsp;if(sz_buf1[3]==0x01)<BR>&nbsp;&#123;<BR>&nbsp; p_addr-&gt;sin_family=AF_INET;<BR>&nbsp; p_addr-&gt;sin_addr.s_addr=*((int *)&amp;(sz_buf1[4]));<BR>&nbsp; p_addr-&gt;sin_port=*((short *)&amp;(sz_buf1[8]));<BR>&nbsp; n_ret-=10;<BR>&nbsp; memcpy(sz_buf,&amp;sz_buf1[10],n_ret);<BR>&nbsp;&#125;<BR>&nbsp;else if(sz_buf1[3]==0x03)<BR>&nbsp;&#123;<BR>&nbsp; char sz_buf2[ZF5_BUFFER_SIZE2+2];<BR>&nbsp; memset(sz_buf2,0,ZF5_BUFFER_SIZE2);<BR>&nbsp; strncpy(sz_buf2,sz_buf2,sz_buf1[4]);<BR>&nbsp; struct hostent *p=gethostbyname(sz_buf2);<BR>&nbsp; if(p==NULL)<BR>&nbsp; &#123;<BR>&nbsp;&nbsp; return -1;<BR>&nbsp; &#125;<BR>&nbsp; n_len1=4+sz_buf1[4];<BR>&nbsp; p_addr-&gt;sin_family=AF_INET;<BR>&nbsp; p_addr-&gt;sin_addr.s_addr=((LPIN_ADDR)p-&gt;h_addr)-&gt;s_addr;<BR>&nbsp; p_addr-&gt;sin_port=*((short *)&amp;(sz_buf1[n_len1]));<BR>&nbsp; <BR>&nbsp; n_ret-=(n_len1+2);<BR>&nbsp; memcpy((void *)sz_buf,(void *)&amp;sz_buf1[n_len1],n_ret);</P>
<P>&nbsp; n_ret-=(4+2+1+sz_buf1[4]);<BR>&nbsp;&#125;<BR>&nbsp;else<BR>&nbsp;&#123;<BR>&nbsp; return -1;<BR>&nbsp;&#125;</P>
<P>&nbsp;return n_ret;<BR>&#125;</P>
<P>//关闭sock5的udp代理<BR>int&nbsp; zf5_sock5_udp::close_sock5_udp()<BR>&#123;<BR>&nbsp;if(m_n_sock5!=INVALID_SOCKET)<BR>&nbsp;&#123;<BR>&nbsp; closesocket(m_n_sock5);<BR>&nbsp; m_n_sock5=INVALID_SOCKET;<BR>&nbsp;&#125;</P>
<P>&nbsp;return 0;<BR>&#125;<BR></P></div>


<div id="tart">
<span>作者: zfive5</span>
<span>来源: CSDN</span>
<span>日期: 2006-3-2 4:18:34</span>
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