ngx. fetch(url,
[options
Makes a request to fetch an URL (05.1),
returns a
Promise that resolves
with the Response object:
Since 0ZO,
the https: // scheme is supported;
redirects are not handled.
The options parameter is expected to be an object with the following keys:
body
request body; by default is empty
buffer_size
the buffer size for reading the response, by default is 4096
headers
request headers object
max
response
body_size
the maximum size of the response body in bytes; by default is 32768
method
HTTP method, by default the GET method is used
verify
enables
or  disables verification of the HTTPS
server  certificate, by
default is true (0.Z.Q)
Example:
ngx. fetch( 'http: / /nginx.org/
then (reply
reply.text ( ) )
then (body
r.return(200 ,
body) )
catch(e
r.return(501
message) )
ngx. log(leve
mes
Writes a message to the error log with the specified level of logging: The
Zevel parameter specifies one of the log levels; the message parameter can
be
string or Buffer: The following log levels can be specified: ngx. INFO,
ngx
WARN; and ngx.ERR_
built-in objects
crypto
The
crypto   object
global   object   that
allows
using   cryptographic
functionality (since 0ZO)
crypto.getRandomValues(typedArray)
Gets   cryptographically
strong random
values
Returns the
same
array
passed
typedArray
but
with
contents
replaced
with
the
newly
generated random numbers. Possible values:
typedArray
can be Int8Array, Intl6Array, Uintl6Array, Int32Array, Or Uint32Array
crypto.subtle.encrypt(algorithu
key: data)
Encrypts data using the provided aLgorithu and key: Returns
Promise
that fulfills with an ArrayBuffer containing the ciphertext: Possible values:
algorithm
an object  that  specifies
the   algorithm
be
used
and   any
extra
parameters if required:
sage)