url: Suppressing network connections
5.3.1 Suppressing Network Connections
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In some circumstances it is desirable to suppress making network
connections. A typical case is when rendering HTML in a mail user
agent, when external URLs should not be activated, particularly to avoid
“bugs” which “call home” by fetch single-pixel images and the like. To
arrange this, bind the following variable for the duration of such
processing.
-- Variable: url-gateway-unplugged
If this variable is non-‘nil’ new network connections are never
opened by the URL library.
Info Catalog
url: Gateways in general