Regex can not match multiple line in painless

I want to catch some string in message field like that:

1600657611591|sendRequest_http10.20.30.1448090BO||wsdlUrl:http://10.20.30.144:8090/BOC2Services/boc2/LocationStaffSaleHistoryService?wsdl: requestContent: <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ser="http://service.boc2.bccs.viettel.com/">
<soapenv:Header>      <wsse:Security soapenv:mustUnderstand="1" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
         <wsse:UsernameToken wsu:Id="UsernameToken-32ce50e8-4a5d-4040-af71-c3428d92daa7">
            <wsse:Username>order</wsse:Username>
            <wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">order</wsse:Password>
         </wsse:UsernameToken>
      </wsse:Security>
   </soapenv:Header>
   <soapenv:Body><ser:insertLocationStaffSale xmlns:ns2="http://service.abc.def.xyz.com/"><locationStaffSaleHistory><actionDetail></actionDetail><insertTime>2020-09-21T10:06:51.590+07:00</insertTime><source>Mbccs</source><unit>VTT</unit><userName>HANTT</userName><x>21.0164359</x><y>105.78433</y></locationStaffSaleHistory></ser:insertLocationStaffSale></soapenv:Body>
</soapenv:Envelope> output exception: java.net.ConnectException: Connection refused|1600657611594|3|1|Loi sendRequest exception 4

And this is my script in kibana:

if (doc['message.keyword'].length == 0) { 
    return "unavailable";
} else {
def m = /.*?http(.*?)wsdl.*?\n/.matcher(doc['message.keyword'].value);
if ( m.matches() ) {
   return m.group(1);
} else {
   return "no match";
}
}

I also try other regex like

/http(.*?)wsdl/
/.*?http(.*?)wsdl.*?/
/.*?http(.*?)wsdl.*?/m

but it still not work. Can you give me some idea? Thanks.

@Marius_Dragomir can we get some help here?

Thanks!
Bhavya

It seem to be that regex can not catch in string that have many line or something like that. It just work when I cut and get substring in first line. But this solution just is temporary.