【正文】 sql = Select Sum(voteCount) AS tl From VoteItem Set voters = (sql) If NOT Then total = voters(tl) End If Set voters = Nothing 39。取得客戶端的真實(shí) IP地址 vIP = (HTTP_X_FORWARDED_FOR) If vIP = Then vIP = (REMOTE_ADDR) End If vExplorer = Browser(vSoft) 39。密碼框——用來輸入密碼。 Set rs= If rs(0).Value Then P無效的用戶名/P Pa href=重新輸入/a/p Else 39。由于在數(shù)據(jù)庫中查詢到的密碼的右邊是包含空格符的，在密碼驗(yàn)證時(shí)要使用函數(shù)Rtrim把空格符過濾掉?！?代碼如下：% if new_password1new_password2 then p兩次密碼輸入有誤！/p pa href=重新輸入！/a/p else end if %(3)連接數(shù)據(jù)庫并檢查用戶名和原密碼是否正確，代碼與前面連接數(shù)據(jù)庫的代碼相同。39。致謝本文是在我的導(dǎo)師老師的悉心指導(dǎo)下完成的，在系統(tǒng)的研制過程中，從系統(tǒng)分析設(shè)計(jì)到具體實(shí)現(xiàn)，導(dǎo)師都給予了具體、細(xì)致的指導(dǎo)。 Distribute a stream past a firewall.Other stations access the distribution station by creating a connection to the distribution station .nsc file using the MSBD protocol. For example, if you want Station2 on ServerB to multicast the ASF content from distribution station, Station1 on ServerA, you use Station1 as the stream source. That is, the stream source for Station2 is msbd://ServerA/Station1.NoteWhen you distribute streams between servers, you must not exceed the distribution limit, the number of MSBD connections that a distribution station can acmodate. By default, a distribution station can support only five MSBD connections to other stations. As you configure stations on remote Windows Media servers to use a distributed ASF stream, you must adjust the distribution station Distribution Limit to acmodate the additional remote connections, or use more than one distribution station as the source for the remote station. For more information about adjusting the Distribution Limit, see Editing station properties.Delivering streams over a nonmulticastenabled networkIf your network does not use multicast routers, you can multicast a stream only within the network segment that contains Windows Media server ponents. Clients on other segments of the network cannot receive the ASF stream multicast because it does not originate within their segment.Clients throughout the network can still receive the stream if the ASF content is multicast within the local segment, and distributed to Windows Media servers on the other network segments. The station on the local network segment must have both multicast and distribution capabilities to acplish this.For the other network segments on which you want to enable multicast streaming, you must install a separate puter running Windows Media server ponents. On each Windows Media server, use Station QuickStart wizard to create a station with multicast capabilities that uses the remote distribution station as the stream source. Each of these Windows Media servers then can multicast the ASF stream within its local segment.NoteThe stream format that was specified in the remote distribution station must be used for the multicast stations created in each network segment. For more information, see Importing a station.Delivering streams through a firewallIf you do not have a Web server, but want to stream content across a firewall to a client, you can enable HTTP streaming on Windows Media server ponents. HTTP streaming is useful for delivering a stream through a firewall because HTTP streaming usually uses port 80 and most firewalls do not block port 80.Windows Media server ponents contains two streaming services—Windows Media Station service and Windows Media Unicast service. Windows Media server ponents can be configured to use HTTP streaming, but only one streaming service (Windows Media Station service or Windows Media Unicast service) can use HTTP streaming at a time. This is because only one service can bind to port 80.If you enable a Windows Media streaming service to stream using HTTP, you cannot run another HTTP server on the same puter because the Windows Media streaming service and the HTTP service pete for use of port 80.It is possible to configure HTTP streaming to use a different port, allowing Windows Media server ponents and another HTTP service (for example, Microsoft Internet Information Server [IIS]) to run on the same puter. The only drawback is that most firewalls, by default, only allow HTTP traffic to pass through port , this functionality is generally reserved for servertoserver distribution, reserving port 80 for direct servertoclient connections. For more information about configuring HTTP streaming to use a different port, see Using HTTP streaming.Creating multicast stations with Windows Media AdministratorYou can create a multicast station, a distribution station, or a station for multicast and distribution using the Configure and Publish Multicast Broadcast Streams QuickStart wizard on the Multicast Stations page in Windows Media Administrator, or you can use an advanced method to create one of these stations. If you use the wizard to create one of these stations, stream format information is added to the station definition on the Specify stream format information screen.If you use the advanced method to create a station, it is possible to create the station without adding stream format information to the station definition, and the Windows Media server will play the program for this station. If you create a distribution station, other stations can receive the stream for distribution because stream format information is not required to distribute a stream. However, if you create a multicast station, multicast clients cannot connect to the station because all stream format information is missing.To enable the multicast clients to render the multicast stream for the station, you must add stream format information for all of the streams in the program to the multicast station definition. If you do not add stream format information for all the streams in the program to the multicast station program definition, then the Windows Media server will not deliver the streams in the p