CLOSEREAD (JANUS DEFINE parameter): Difference between revisions
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<span class="pageSubtitle">Put up 'read' as soon as web request is received</span> | <span class="pageSubtitle">Put up 'read' as soon as web request is received</span> | ||
<var>CLOSEREAD</var> is a parameter on [[JANUS DEFINE]], which defines and sets characteristics of a Janus port. | <var>CLOSEREAD</var> is a parameter on <var>[[JANUS DEFINE]]</var>, which defines and sets characteristics of a Janus port. | ||
<var>CLOSEREAD</var> indicates that web threads should "put up" a TCP/IP read after receiving the entire request but before processing it. This read can then detect if a connection has been lost. If <var>CLOSEREAD</var> is not specified a lost connection will probably only be detected when the web thread actually tries to write data to the connection. | <var>CLOSEREAD</var> indicates that web threads should "put up" a TCP/IP read after receiving the entire request but before processing it. This read can then detect if a connection has been lost. If <var>CLOSEREAD</var> is not specified a lost connection will probably only be detected when the web thread actually tries to write data to the connection. | ||
<var>[[CLOSEIMMED (JANUS DEFINE parameter)|CLOSEIMMED]]</var> indicates that if a lost connection is noticed by the Janus PST, the PST should BUMP the <var class="product">Model 204</var> thread associated with the connection immediately. If <var>CLOSEIMMED</var> is not specified a lost connection will only cause request termination when the web thread tries to send data to the connection or invokes a $Web function. | <var>[[CLOSEIMMED (JANUS DEFINE parameter)|CLOSEIMMED]]</var> indicates that if a lost connection is noticed by the Janus PST, the PST should BUMP the <var class="product">Model 204</var> thread associated with the connection immediately. If <var>CLOSEIMMED</var> is not specified a lost connection will only cause request termination when the web thread tries to send data to the connection or invokes a $Web function. | ||
<var>CLOSEREAD</var> and <var>CLOSEIMMED</var> are useful for ensuring that CPU and I/O intensive web requests will be terminated immediately should the user become impatient and cancel the request. | <var>CLOSEREAD</var> and <var>CLOSEIMMED</var> are useful for ensuring that CPU and I/O intensive web requests will be terminated immediately should the user become impatient and cancel the request. | ||
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<li>[[JANUS DEFINE#parmlist|List of JANUS DEFINE parameters]] | <li>[[JANUS DEFINE#parmlist|List of JANUS DEFINE parameters]] | ||
</ul> | </ul> | ||
[[Category:JANUS DEFINE parameters|CLOSEREAD]] | [[Category:JANUS DEFINE parameters|CLOSEREAD]] | ||
Latest revision as of 18:13, 8 June 2016
Put up 'read' as soon as web request is received
CLOSEREAD is a parameter on JANUS DEFINE, which defines and sets characteristics of a Janus port.
CLOSEREAD indicates that web threads should "put up" a TCP/IP read after receiving the entire request but before processing it. This read can then detect if a connection has been lost. If CLOSEREAD is not specified a lost connection will probably only be detected when the web thread actually tries to write data to the connection.
CLOSEIMMED indicates that if a lost connection is noticed by the Janus PST, the PST should BUMP the Model 204 thread associated with the connection immediately. If CLOSEIMMED is not specified a lost connection will only cause request termination when the web thread tries to send data to the connection or invokes a $Web function.
CLOSEREAD and CLOSEIMMED are useful for ensuring that CPU and I/O intensive web requests will be terminated immediately should the user become impatient and cancel the request.
Valid only for WEBSERV ports.