+ <row>
+ <entry>sru</entry><entry>
+ SRU/Solr transport type. Must be either <literal>soap</literal>,
+ <literal>get</literal>, <literal>post</literal>, or
+ <literal>solr</literal>.
+ </entry><entry>soap</entry></row>
+ <row><entry>
+ sru_version</entry><entry>
+ SRU/SRW version. Should be <literal>1.1</literal>, or
+ <literal>1.2</literal>. This is , prior to connect, the version
+ to offer (highest version). And following connect (in fact
+ first operation), holds the negotiated version with the server
+ (same or lower version).
+ </entry><entry>1.2</entry></row>
+ <row><entry>
+ facets</entry><entry>
+ A FacetList is comma-separated list of facet, which is defined
+ as <literal>AttributeList</literal> and a optional FacetTerm
+ (a Term and a frequency). On request the terms is missing.
+ On response the the list contains the terms that the target
+ could collect.
+ </entry><entry>none</entry></row>
+ <row><entry>
+ apdulog</entry><entry>
+ If set to a true value such as "1", a log of low-level
+ protocol packets is emitted on standard error stream. This
+ can be very useful for debugging.
+ </entry><entry>0</entry></row>
+ <row><entry>
+ saveAPDU</entry><entry>
+ If set to a true value such as "1", a log of low-level
+ protocol packets is saved. The log can be retrieved by reading
+ option APDU. Setting saveAPDU always has the side effect of
+ resetting the currently saved log. This setting is
+ <emphasis>write-only</emphasis>. If read, NULL will be returned.
+ It is only recognized in
+ <function>ZOOM_connection_option_set</function>.
+ </entry><entry>0</entry></row>
+ <row><entry>
+ APDU</entry><entry>
+ Returns the log of protocol packets. Will be empty if logging
+ is not enabled (see saveAPDU above). This setting is
+ <emphasis>read-only</emphasis>. It is only recognized if used
+ in call to <function>ZOOM_connection_option_get</function> or
+ <function>ZOOM_connection_option_getl</function>.
+ </entry><entry></entry></row>
+ <row><entry>
+ memcached</entry><entry>
+ If given and non-empty,
+ <ulink url="&url.libmemcached;">libMemcached</ulink>
+ will be configured for the connection.
+ This option is inspected by ZOOM when a connection is established.
+ If the <literal>memcached</literal> option is given
+ and YAZ is compiled without libMemcached support, an internal
+ diagnostic (10018) will be thrown.
+ libMemcached support is available for YAZ 5.0.13 or later. If this
+ option is supplied for an earlier version of YAZ, it is
+ <emphasis>ignored</emphasis>.
+ The value of this option is a string passed verbatim to
+ the <function>memcached</function> function part of libMemcached.
+ Refer to man page memcached(3). Earlier versions of libMemcached
+ do not offer this function. In this case only the option
+ <literal>--server=</literal><replaceable>host</replaceable> may
+ be given (YAZ emulates that part of libMemcached).
+ </entry><entry>none</entry></row>