重写的仿winsock类，目前仅支持tcp协议
重写了前几天丢失的winsock类，迫不及待拿出来分享，欢迎下载试错~~10/4 代码更新如下：
程序代码：
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*-- 类: foxsocket (d:\documents\visual foxpro 项目\myclass.vcx)
*-- 父类: custom
*-- 基类: custom
*-- 时间戳: 10/04/25 11:45:03 PM
*
DEFINE CLASS foxsocket AS custom
*-- 版本号
ver = ""
*-- 描述
description = ""
*-- 复制监听的套接字
listensocket = 0
*-- 当前套接字句柄
sockethandle = ""
*-- 收到的字节数
bytesreceived = 0
*-- 远程主机
remotehost = ""
*-- 远程ip地址
remoteip = ""
*-- 远程端口
remoteport = 0
*-- 本地主机名
localhost = ""
*-- 本地ip地址
localip = ""
*-- 本机端口
localport = 0
*-- 套接字连接协议。1表示TCP，2表示UDP，其他待开发
protocol = 1
*-- 当前连接状态
state = 0
Name = "foxsocket"
*-- 连接远方主机方法及连接事件
PROCEDURE connect
LPARAMETERS remotehost,remoteport
*!* connect带参数时为方法，不带参数时为事件
IF PCOUNT()=2 &&带参数则发出连接请求
LOCAL n,stsockaddr
WSAAsyncSelect(this.Sockethandle,thisform.hwnd,1124,51) && FD_CONNECT or FD_READ or FD_CLOSE or FD_WRITE
stSockAddr = BINTOC(2, "2RS"); && sin_family = AF_INET
+ BINTOC(htons(remotePort), "2RS"); && sin_port
+ BINTOC(inet_addr(remotehost), "4RS"); && sin_addr
+ REPLICATE(0h00, 8)
n=connect(this.Sockethandle, @stSockAddr, LEN(stSockAddr)) && SOCKET_ERROR
IF n#-1
this.state=6
ENDIF
RETURN n#-1
ENDIF
ENDPROC
*-- winapi函数申明
PROTECTED PROCEDURE declare
* Socket初始化相关
DECLARE INTEGER WSAGetLastError IN ws2_32
DECLARE INTEGER WSAStartup IN ws2_32 INTEGER wVersionRequested, STRING @lpWSAData
DECLARE INTEGER WSACleanup IN ws2_32
* 基础Socket函数
DECLARE INTEGER socket IN ws2_32 INTEGER af, INTEGER type, INTEGER protocol
DECLARE INTEGER closesocket IN ws2_32 INTEGER s
DECLARE INTEGER bind IN ws2_32 as _bind INTEGER s, STRING @name, INTEGER namelen
DECLARE INTEGER listen IN ws2_32 INTEGER s, INTEGER backlog
DECLARE INTEGER accept IN ws2_32 INTEGER s, STRING @addr, INTEGER @addrlen
DECLARE INTEGER connect IN ws2_32 INTEGER s, STRING @name, INTEGER namelen
* 数据传输函数
DECLARE INTEGER send IN ws2_32 INTEGER s, STRING @buf, INTEGER len, INTEGER flags
DECLARE INTEGER recv IN ws2_32 INTEGER s, STRING @buf, INTEGER len, INTEGER flags
DECLARE INTEGER sendto IN ws2_32 INTEGER s, STRING @buf, INTEGER len, INTEGER flags, STRING @to, INTEGER tolen
DECLARE INTEGER recvfrom IN ws2_32 INTEGER s, STRING @buf, INTEGER len, INTEGER flags, STRING @from, INTEGER @fromlen
* 地址转换函数
DECLARE INTEGER inet_addr IN ws2_32 STRING cp
DECLARE STRING inet_ntoa IN ws2_32 INTEGER in
* 主机信息函数
DECLARE INTEGER gethostname IN ws2_32 STRING @name, INTEGER namelen
DECLARE INTEGER gethostbyname IN ws2_32 STRING name
DECLARE INTEGER gethostbyaddr IN ws2_32 STRING @addr, INTEGER len, INTEGER type
* Socket选项控制
DECLARE INTEGER getsockopt IN ws2_32 INTEGER s, INTEGER level, INTEGER optname, STRING @optval, INTEGER @optlen
DECLARE INTEGER setsockopt IN ws2_32 INTEGER s, INTEGER level, INTEGER optname, STRING @optval, INTEGER optlen
* IO控制函数
DECLARE INTEGER ioctlsocket IN ws2_32 INTEGER s, INTEGER cmd, INTEGER @argp
* 异步Socket函数
DECLARE INTEGER WSAAsyncSelect IN ws2_32 INTEGER s, INTEGER hWnd, INTEGER wMsg, INTEGER lEvent
* 其他实用函数
DECLARE SHORT htons IN ws2_32 SHORT hostshort
DECLARE SHORT ntohs IN ws2_32 SHORT netshort
DECLARE INTEGER htonl IN ws2_32 INTEGER hostlong
DECLARE INTEGER ntohl IN ws2_32 INTEGER netlong
ENDPROC
*-- 关闭套接字方法及事件
PROCEDURE close
LPARAMETERS hsocket
*!* close带参数时为方法，不带参数时为事件
IF PCOUNT()=1
closesocket(hSocket)
this.sockethandle=0
this.state=0
ENDIF
ENDPROC
*-- 当远方客户端企图连接时发生
PROCEDURE connectionrequest
LPARAMETERS requestid
*!* 收到连接请求时自动产生requestid，同意请求则调用accept()并传递requestid
*!* 若要拒绝连接，只需传递参数0给accept()方法
ENDPROC
*-- 当收到远方电脑发送的数据时发生
PROCEDURE dataarrival
LPARAMETERS bytestotal
*!* dataarrival带参数时为方法，不带参数时为事件
*!* 可以在这个方法中调用getdata()方法来获取数据
ENDPROC
*-- 发送数据期间发生
PROCEDURE sendprocess
LPARAMETERS bytessent,bytesremaining
ENDPROC
*-- 接收一个连接请求
PROCEDURE accept
LPARAMETERS requestid
*!* 在connectionrequest中调用本方法，根据条件判断是否接受连接请求
LOCAL stSockAddr, nSize, nIP, szIP, nPort,n
n=(DATE()-{^1970-01-01})*24*3600*1000+INT(SECONDS()*1000)-8*3600*1000 &&唯一时间戳
*****winsock没有拒绝连接的函数，我们采用先接收在关闭以达到关闭效果*****
stSockAddr = REPLICATE(0h00, 16)
nSize = LEN(stSockAddr)
this.listensocket=this.sockethandle &&设置为监听套接字
this.sockethandle =accept(this.sockethandle, @stSockAddr, @nSize) &&新套接字用于通讯
WSAAsyncSelect(this.sockethandle, thisform.hwnd, 1124, 33) && FD_READ + FD_CLOSE=33 0x400+100=1124
*****也可以采用不响应connectionrequest请求的方式来拒绝连接，即请求端超时，但会造成客户端堵塞，不建议
IF n-requestid<3000 &&3秒内响应connectionrequest请求
nIP = CTOBIN(SUBSTR(stSockAddr, 5, 4), '4RS')
szIP = SYS(2600, inet_ntoa(nIP), 16)
szIP = LEFT(szIP, AT(0h00, szIP)-1)
nPort = ntohs(CTOBIN(SUBSTR(stSockAddr, 3, 2), '2RS'))
this.remotehostip=szip
this.remoteport=nport
this.state=7
ELSE
this.close(this.sockethandle) &&拒绝连接
ENDIF
ENDPROC
*-- 绑定套接字到指定的IP地址和端口
PROCEDURE bind
LPARAMETERS localip,localport
LOCAL n,stsockaddr
stSockAddr = BINTOC(2, '2RS'); && sin_family ipv4
+ BINTOC(htons(localPort), '2RS'); && sin_port
+ BINTOC(inet_addr(@localip), '4RS'); && sin_addr
+ REPLICATE(0h00, 8)
n=_bind(this.Sockethandle, @stSockAddr, LEN(stSockAddr))
RETURN n#-1
ENDPROC
*-- 检索来自远方计算机的数据
PROCEDURE getdata
LPARAMETERS cdata,nbytes &&cdata为输出型参数
IF PCOUNT()=1
nbytes=this.bytesreceived
ENDIF
RETURN recv(this.Sockethandle, @cdata, nbytes, 0)
ENDPROC
*-- 监听远方计算机的连接请求
PROCEDURE listen
#define WM_SOCKET 0x400 + 100
#define FD_ACCEPT 8
listen(this.Sockethandle, 5)
WSAAsyncSelect(this.sockethandle, thisform.hWnd, WM_SOCKET, FD_ACCEPT) &&FD_ACCEPT=8
this.state=2
ENDPROC
*-- 查看接收到的数据但不清空缓存
PROCEDURE peekdata
LPARAMETERS cdata,nbytes &&cdata为输出型参数
*!* 本方法等同于getdata方法，但是不清除缓存。
IF PCOUNT()=1
nbytes=this.bytesreceived
ENDIF
RETURN recv(this.Sockethandle, @cdata, nbytes, 2) &&MSG_PEEK 2
ENDPROC
*-- 向远方计算机发送数据
PROCEDURE senddata
LPARAMETERS cdata
LOCAL n
n=send(_hSocket, @cdata, LEN(szDate), 0)
RETURN n#-1
ENDPROC
*-- 处理自定义socket消息
PROCEDURE msghandler
LPARAMETERS hWnd, Msg, wParam, lParam
IF this.sockethandle#wparam
this.sockethandle=wparam
ENDIF
DO CASE
CASE lParam == 0x0008 && FD_ACCEPT 接收将要连接的通知
requestid=(DATE()-{^1970-01-01})*24*3600*1000+INT(SECONDS()*1000)-8*3600*1000
this.connectionrequest(requestid) &&决定是否接受连接请求
CASE lParam == 0x0001 && FD_READ 接收读准备好的通知
nAvail = 0
ioctlsocket(this.sockethandle, 0x4004667F, @nAvail) && 查询可读字节数
IF nAvail > 0
szReadBuf = REPLICATE(0h00,navail)
recv(this.sockethandle, @szReadBuf, nAvail, 0)
ENDIF
this.bytesreceived=nAvail
this.dataarrival(nAvail)
CASE lParam == 0x0002 && FD_WRITE 接收写准备好的通知
this.readytosend()
&&可以发送数据时会产生此事件，没想好这里需要写什么代码
CASE lParam == 0x0004 && FD_OOB 接收带边数据到达的通知
MESSAGEBOX("待开发功能！") &&紧急通知，常用于终止，取消，比如下载
CASE lParam == 0x0010 && FD_CONNECT 接收已连接好的通知
this.state=7
this.connect() &&当服务端接受连接时执行用户自定义连接事件
CASE lParam == 0x0020 && FD_CLOSE 接收套接口关闭的通知
this.state=8
this.close(this.sockethandle) &&关闭套接字连接
this.close() &&执行用户响应的close事件
CASE lParam == 0x274D0010
MESSAGEBOX('远程端口无响应')
OTHERWISE
ENDCASE
ENDPROC
*-- 当发送操作完成后发生
PROCEDURE sendcomplete
*自定义发送完成事件
ENDPROC
*-- 获得本机名
PROCEDURE getlocalhost
RETURN STREXTRACT(SYS(0),"",SPACE(1))
ENDPROC
*-- 获得指定主机的ip地址
PROCEDURE getipadress
LPARAMETERS lchostname
IF PCOUNT()=0
IF EMPTY(this.localhost)
this.localhost=this.getlocalhost()
ENDIF
lchostname=this.localhost
ENDIF
* VFP示例：使用gethostbyname解析域名
#DEFINE HOSTENT_SIZE 16
* 解析域名
lnHostEnt = gethostbyname(lcHostName)
IF lnHostEnt = 0
MESSAGEBOX("无法解析主机名" + lcHostName)
lcip=""
ENDIF
* 读取hostent结构体
lcHostEnt = REPLICATE(CHR(0), HOSTENT_SIZE)
= CopyMemory(@lcHostEnt, lnHostEnt, HOSTENT_SIZE)
* 获取IP地址
lnIPAddr = CTOBIN(SUBSTR(lcHostEnt, 13, 4), "4rs")
lcIPAddr = REPLICATE(CHR(0), 4)
= CopyMemory(@lcIPAddr, lnIPAddr, 4)
lnFirstIP = CTOBIN(SUBSTR(lcIPaddr, 1, 4), "4rs")
lcIPAddr = REPLICATE(CHR(0), 4)
= CopyMemory(@lcIPAddr, lnFirstIP, 4)
* 转换为点分十进制
lcIP = TRANSFORM(ASC(SUBSTR(lcIPAddr, 1, 1))) + "." + ;
TRANSFORM(ASC(SUBSTR(lcIPAddr, 2, 1))) + "." + ;
TRANSFORM(ASC(SUBSTR(lcIPAddr, 3, 1))) + "." + ;
TRANSFORM(ASC(SUBSTR(lcIPAddr, 4, 1)))
RETURN lcip
ENDPROC
*-- 建立一个套接字
PROCEDURE createsocket
LPARAMETERS nprotocol
IF PCOUNT()=0
nprotocol=this.protocol
ENDIF
this.sockethandle=socket(2,nprotocol,0) &&1,tcp协议;2，UDP协议
BINDEVENT(thisform.hwnd, WM_SOCKET, this, "Msghandler")
this.state=1
RETURN this.sockethandle#0
ENDPROC
*-- 准备发送数据
PROCEDURE readytosend
*!* 准备发送数据，在此方法中调用senddata方法
ENDPROC
PROCEDURE Destroy
wsacleanup()
ENDPROC
PROCEDURE Init
#define WM_SOCKET 0x400+100
LOCAL nResult
IF TYPE("thisform")#"O"
MESSAGEBOX("foxsocket只能在表单中实例化!")
RETURN .f.
ELSE
this.declare()
WSADATA=REPLICATE(CHR(0),398)
nResult = WSAStartup(0x202, @WSADATA)
this.ver=TRANSFORM(ASC(SUBSTR(wsadata,2,1)))+"."+TRANSFORM(ASC(SUBSTR(wsadata,1,1)))
this.description=STRTRAN(SUBSTR(wsadata,5,257),CHR(0),"")
ENDIF
RETURN (nResult = 0)
ENDPROC
PROCEDURE Error
LPARAMETERS nError, cMethod, nLine
LOCAL cprogram,cmsg,ccode
cprogram=PROGRAM()
cmsg=MESSAGE()
ccode=MESSAGE(1)
szMsg = '错误信息: ' + cMsg + 0h0D0D;
+ '错误编号: ' + TRANSFORM(nError) + 0h0D0D;
+ '错误代码: ' + ccode + 0h0D0D;
+ '出错程序: ' + cProgram + 0h0D0D;
+ '出错方法: ' + cMethod + 0h0D0D;
+ '出错行号: ' + TRANSFORM(nLine)
MESSAGEBOX(szMsg, 2+48+512, "Error")
*CANCEL
ENDPROC
ENDDEFINE
*
*-- EndDefine: foxsocket
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[此贴子已经被作者于2025-10-4 23:49编辑过]
