CLOSEREAD (JANUS DEFINE parameter): Difference between revisions
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<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>[[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. | ||
Revision as of 21:15, 1 March 2012
<section begin="desc" />Put up 'read' as soon as web request is received.<section end="desc" />
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.