curl: (56) SSL read: error:00000000:lib(0):func(0):reason(0), errno 73

% Total    % Received % Xferd  Average Speed          Time             Curr.
                                 Dload  Upload Total    Current  Left    Speed
  0     0    0     0    0     0      0      0 --:--:--  0:05:01 --:--:--     0
curl: (56) SSL read: error:00000000:lib(0):func(0):reason(0), errno 73

search index=os_nix host=spock source=/var/adm/messages latest=-30d NOT snmpd authentication (error OR fail OR failure) | head

URLPROTO='https://'
URLHOST='splunkapi.example.com'
URLPORT=':8089'
URLDIR='/servicesNS/admin/search/search/jobs/export'
URL="${URLPROTO}${URLHOST}${URLPORT}${URLDIR}"
luser=(read from user input)
lpassword=(read from user input)
OUTFILE=(generated from hostname and the type of search I'm running)
mySEARCH=(read from input file)
USER=(User ID read from environment)

curl -k -o "${OUTFILE}" -u ${luser:=${USER}}:${lpasswd} ${URL} -d search="${mySEARCH}" -d output_mode="csv"

curl 7.11.1 (powerpc-ibm-aix5.2.0.0) libcurl/7.11.1 OpenSSL/0.9.7g ipv6
Protocols: ftp gopher telnet dict ldap http file https ftps
Features: IPv6 SSL NTLM Largefile