Sierra 5391-02, 5391-01 user manual Appendix 5. General Appendix 5.1 .1 Browser Caching

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T12017-Sentry_LANServer_Users_Manual

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Appendix 5. General

Appendix 5.1. 9.1 Browser Caching

The WebServer supports browser caching by filling in the Served File's date and Last- Modified date as required.

The WebServer does not use the file date and time to support caching. It uses the FieldServer reboot time. This is considered the file creation / last-modified date for all files.

HTML files are never cached. They are always served with a HTTP-200 response.

Other files may be cached. When the browser fills in the 'If-Modified-Since' header field with a date that is newer than the reboot date then the FS responds with an HTTP-304 response and does not serve the file as it knows the browser has cached the file. To clear the cache reboot the FieldServer or use Ctrl-F5 to force a re-read without caching.

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldserver.com Tel: (408) 262-2299 Fax: (408) 262-2269 Toll_Free: 888-509-1970 email: support@fieldserver.com

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Contents Sentry LANServer Applicability & EffectivityTable of Contents LED1 Product Description General FeaturesOperation Sentry Firmware Version ConnectionsModel 5391-01 LANServer with 2-4 Sentry Controllers Page Quick Start LANServer Terminology Quick StartSetting Browser Security Settings for ActiveX controls Browser Security SettingsActiveX Controls and Security T12017-SentryLANServerUsersManual Customize the settings Setting the Browser Privacy Settings for Cookies Cookies and Browser SecuritySpecify the WebServer IP address and then click Allow T12017-SentryLANServerUsersManual Interpreting Zone Buttons T12017-SentryLANServerUsersManual Interpreting Sentry-Sensor Controls Interpreting Sentry -Combo Controls Interpreting Sentry Alarms Understanding the Alarm Table Colors Acknowledging AlarmsClick Retry to clear the dialog Interpreting Sentry Events Event Report TypesPage Understanding the Events What happens if Event Logging is disabled?Events Page and the Date / Time Event File Maintenance Potential Problems with Event Logging File ProblemsSpace Problems Limited number of event recordsManaging Sentry Events Uploading Potential Problems with an Upload How Event Time Stamps are reported Manual uploadInterpreting the Sentry Face Plate LED Current sensor number Gas Concentration for current sensor Sensor One User at a Time ActiveX Not InstalledLANServer Driver Ver .05f Required Description How the Control OperatesBackup File Contents Problems with Calibration Backup ControlInterpreting Analog, Text and LED controls Analog Controls Text ControlsLED Controls Using the LANServer to allow customers to upload files Appendix 1.3. Page login.htm not found Appendix 1.2. Objects report ‘Not Found’Appendix 1.6. Buttons Display in White Appendix 1.7. Cookie LengthAppendix 1.9. LANServer Configuration LED 40159,8 40977,8 40985,8Appendix 2. LANServer Error Messages FYIWEB#13 Err Not enough Space for alarm WEB#15 FYI ASO Max Limited to %d Web#68 FYI. Http Appendix 3. WinSock Error Messages Wsaeafnosupport WsaeconnresetWsaenetreset WsaealreadyWsaehostdown WsaefaultWsaedestaddrreq WsaehostunreachWsaemsgsize WsaeisconnWsaemfile WsaenetdownWsaeopnotsupp WsaenotconnWsaenotsock WsaepfnosupportSockraw WsaeshutdownWsaesocktnosupport WsaetimedoutWsainvalidprovider WsainvalidparameterWsainvalidproctable WsaioincompleteWsanotinitialised WsanodataWsaproviderfailedinit WsanorecoveryHosts Wsasyscallfailure Wsaediscon WINSOCK.DLL Wsavernotsupported WsaoperationabortedAppendix 4.2. LED1 Appendix 4. FieldServer ActiveX Controls Appendix 4.1. Ana1Appendix 4.3. Char1 Appendix 4.4. Limitations and Supported Environments Appendix 5. General Appendix 5.1 .1 Browser Caching This page Intentionally Left Blank