Description: vc++ writing network communication procedures, there are many examples, very easy to use, take a look at it.
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File list (Check if you may need any files):
Appendix
........\BroadCast
........\.........\AddDialog.cpp
........\.........\AddDialog.h
........\.........\CntrItem.cpp
........\.........\CntrItem.h
........\.........\MainFrm.cpp
........\.........\MainFrm.h
........\.........\MultiCast.cpp
........\.........\MultiCast.h
........\.........\MultiCastChat.aps
........\.........\MultiCastChat.clw
........\.........\MultiCastChat.cpp
........\.........\MultiCastChat.dsp
........\.........\MultiCastChat.dsw
........\.........\MultiCastChat.exe
........\.........\MultiCastChat.h
........\.........\MultiCastChat.ncb
........\.........\MultiCastChat.opt
........\.........\MultiCastChat.plg
........\.........\MultiCastChat.rc
........\.........\MultiCastChatDoc.cpp
........\.........\MultiCastChatDoc.h
........\.........\MultiCastChatView.cpp
........\.........\MultiCastChatView.h
........\.........\ReadMe.txt
........\.........\res
........\.........\...\MultiCastChat.rc2
........\.........\...\Thumbs.db
........\.........\resource.h
........\.........\StdAfx.cpp
........\.........\StdAfx.h
........\chat
........\....\NetClient.exe
........\....\NetClient.exe.manifest
........\....\NetServer.exe
........\....\NetServer.exe.manifest
........\NetAnts
........\.......\Download.aps
........\.......\Download.clw
........\.......\Download.cpp
........\.......\Download.dsp
........\.......\Download.dsw
........\.......\Download.exe
........\.......\Download.h
........\.......\Download.ncb
........\.......\Download.opt
........\.......\Download.plg
........\.......\Download.rc
........\.......\DownloadDlg.cpp
........\.......\DownloadDlg.h
........\.......\GetList.cpp
........\.......\GetList.h
........\.......\HTTPDownload.cpp
........\.......\HTTPDownload.h
........\.......\OleListDropTarget.cpp
........\.......\OleListDropTarget.h
........\.......\ReadMe.txt
........\.......\res
........\.......\...\Download.rc2
........\.......\resource.h
........\.......\StdAfx.cpp
........\.......\StdAfx.h
........\phonecall
........\.........\AboutHelpDlg.cpp
........\.........\AboutHelpDlg.h
........\.........\modem.001
........\.........\modem.002
........\.........\modem.003
........\.........\modem.aps
........\.........\modem.clw
........\.........\modem.cpp
........\.........\modem.dsp
........\.........\modem.dsw
........\.........\modem.h
........\.........\modem.mak
........\.........\modem.ncb
........\.........\modem.opt
........\.........\modem.plg
........\.........\modem.rc
........\.........\modem.rc2
........\.........\modemDlg.cpp
........\.........\modemDlg.h
........\.........\res
........\.........\...\modem.ICO
........\.........\...\modem.rc2
........\.........\...\Thumbs.db
........\.........\resource.h
........\.........\StdAfx.cpp
........\.........\StdAfx.h
chap1
.....\ChatCAsyncSocket
.....\................\ChatCAsyncSocket.aps
.....\................\ChatCAsyncSocket.clw