curl --request POST \
  --url https://ota-int.axisdata.net:9443/hotelavailability \
  --header 'Content-Type: application/xml' \
  --data '<OTA_HotelAvailRQ xmlns="http://www.opentravel.org/OTA/2003/05" MaxResponses="200" EchoToken="1" Version="2008.1">
  <POS>
    <Source>
      <RequestorID Instance="MF002" ID_Context="AxisData" ID="TEST" Type="22"/>
    </Source>
    <Source>
      <RequestorID Type="88" ID="TEST" MessagePassword="testpass"/>
    </Source>
  </POS>
  <AvailRequestSegments>
    <AvailRequestSegment InfoSource="12">
      <StayDateRange End="2029-07-24" Start="2029-07-17"/>
      <RoomStayCandidates>
        <RoomStayCandidate>
          <GuestCounts>
            <GuestCount Count="2" AgeQualifyingCode="10"/>
          </GuestCounts>
        </RoomStayCandidate>
      </RoomStayCandidates>
      <HotelSearchCriteria>
        <Criterion>
          <RefPoint CodeContext="Country">Spain</RefPoint>
          <RefPoint CodeContext="Region">Mallorca</RefPoint>
        </Criterion>
      </HotelSearchCriteria>
    </AvailRequestSegment>
  </AvailRequestSegments>
</OTA_HotelAvailRQ>'

import requests

url = "https://ota-int.axisdata.net:9443/hotelavailability"

payload = "<OTA_HotelAvailRQ xmlns=\"http://www.opentravel.org/OTA/2003/05\" MaxResponses=\"200\" EchoToken=\"1\" Version=\"2008.1\">\n  <POS>\n    <Source>\n      <RequestorID Instance=\"MF002\" ID_Context=\"AxisData\" ID=\"TEST\" Type=\"22\"/>\n    </Source>\n    <Source>\n      <RequestorID Type=\"88\" ID=\"TEST\" MessagePassword=\"testpass\"/>\n    </Source>\n  </POS>\n  <AvailRequestSegments>\n    <AvailRequestSegment InfoSource=\"12\">\n      <StayDateRange End=\"2029-07-24\" Start=\"2029-07-17\"/>\n      <RoomStayCandidates>\n        <RoomStayCandidate>\n          <GuestCounts>\n            <GuestCount Count=\"2\" AgeQualifyingCode=\"10\"/>\n          </GuestCounts>\n        </RoomStayCandidate>\n      </RoomStayCandidates>\n      <HotelSearchCriteria>\n        <Criterion>\n          <RefPoint CodeContext=\"Country\">Spain</RefPoint>\n          <RefPoint CodeContext=\"Region\">Mallorca</RefPoint>\n        </Criterion>\n      </HotelSearchCriteria>\n    </AvailRequestSegment>\n  </AvailRequestSegments>\n</OTA_HotelAvailRQ>"
headers = {"Content-Type": "application/xml"}

response = requests.post(url, data=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/xml'},
  body: '<OTA_HotelAvailRQ xmlns="http://www.opentravel.org/OTA/2003/05" MaxResponses="200" EchoToken="1" Version="2008.1">\n  <POS>\n    <Source>\n      <RequestorID Instance="MF002" ID_Context="AxisData" ID="TEST" Type="22"/>\n    </Source>\n    <Source>\n      <RequestorID Type="88" ID="TEST" MessagePassword="testpass"/>\n    </Source>\n  </POS>\n  <AvailRequestSegments>\n    <AvailRequestSegment InfoSource="12">\n      <StayDateRange End="2029-07-24" Start="2029-07-17"/>\n      <RoomStayCandidates>\n        <RoomStayCandidate>\n          <GuestCounts>\n            <GuestCount Count="2" AgeQualifyingCode="10"/>\n          </GuestCounts>\n        </RoomStayCandidate>\n      </RoomStayCandidates>\n      <HotelSearchCriteria>\n        <Criterion>\n          <RefPoint CodeContext="Country">Spain</RefPoint>\n          <RefPoint CodeContext="Region">Mallorca</RefPoint>\n        </Criterion>\n      </HotelSearchCriteria>\n    </AvailRequestSegment>\n  </AvailRequestSegments>\n</OTA_HotelAvailRQ>'
};

fetch('https://ota-int.axisdata.net:9443/hotelavailability', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_PORT => "9443",
  CURLOPT_URL => "https://ota-int.axisdata.net:9443/hotelavailability",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "<OTA_HotelAvailRQ xmlns=\"http://www.opentravel.org/OTA/2003/05\" MaxResponses=\"200\" EchoToken=\"1\" Version=\"2008.1\">\n  <POS>\n    <Source>\n      <RequestorID Instance=\"MF002\" ID_Context=\"AxisData\" ID=\"TEST\" Type=\"22\"/>\n    </Source>\n    <Source>\n      <RequestorID Type=\"88\" ID=\"TEST\" MessagePassword=\"testpass\"/>\n    </Source>\n  </POS>\n  <AvailRequestSegments>\n    <AvailRequestSegment InfoSource=\"12\">\n      <StayDateRange End=\"2029-07-24\" Start=\"2029-07-17\"/>\n      <RoomStayCandidates>\n        <RoomStayCandidate>\n          <GuestCounts>\n            <GuestCount Count=\"2\" AgeQualifyingCode=\"10\"/>\n          </GuestCounts>\n        </RoomStayCandidate>\n      </RoomStayCandidates>\n      <HotelSearchCriteria>\n        <Criterion>\n          <RefPoint CodeContext=\"Country\">Spain</RefPoint>\n          <RefPoint CodeContext=\"Region\">Mallorca</RefPoint>\n        </Criterion>\n      </HotelSearchCriteria>\n    </AvailRequestSegment>\n  </AvailRequestSegments>\n</OTA_HotelAvailRQ>",
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/xml"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://ota-int.axisdata.net:9443/hotelavailability"

	payload := strings.NewReader("<OTA_HotelAvailRQ xmlns=\"http://www.opentravel.org/OTA/2003/05\" MaxResponses=\"200\" EchoToken=\"1\" Version=\"2008.1\">\n  <POS>\n    <Source>\n      <RequestorID Instance=\"MF002\" ID_Context=\"AxisData\" ID=\"TEST\" Type=\"22\"/>\n    </Source>\n    <Source>\n      <RequestorID Type=\"88\" ID=\"TEST\" MessagePassword=\"testpass\"/>\n    </Source>\n  </POS>\n  <AvailRequestSegments>\n    <AvailRequestSegment InfoSource=\"12\">\n      <StayDateRange End=\"2029-07-24\" Start=\"2029-07-17\"/>\n      <RoomStayCandidates>\n        <RoomStayCandidate>\n          <GuestCounts>\n            <GuestCount Count=\"2\" AgeQualifyingCode=\"10\"/>\n          </GuestCounts>\n        </RoomStayCandidate>\n      </RoomStayCandidates>\n      <HotelSearchCriteria>\n        <Criterion>\n          <RefPoint CodeContext=\"Country\">Spain</RefPoint>\n          <RefPoint CodeContext=\"Region\">Mallorca</RefPoint>\n        </Criterion>\n      </HotelSearchCriteria>\n    </AvailRequestSegment>\n  </AvailRequestSegments>\n</OTA_HotelAvailRQ>")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/xml")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://ota-int.axisdata.net:9443/hotelavailability")
  .header("Content-Type", "application/xml")
  .body("<OTA_HotelAvailRQ xmlns=\"http://www.opentravel.org/OTA/2003/05\" MaxResponses=\"200\" EchoToken=\"1\" Version=\"2008.1\">\n  <POS>\n    <Source>\n      <RequestorID Instance=\"MF002\" ID_Context=\"AxisData\" ID=\"TEST\" Type=\"22\"/>\n    </Source>\n    <Source>\n      <RequestorID Type=\"88\" ID=\"TEST\" MessagePassword=\"testpass\"/>\n    </Source>\n  </POS>\n  <AvailRequestSegments>\n    <AvailRequestSegment InfoSource=\"12\">\n      <StayDateRange End=\"2029-07-24\" Start=\"2029-07-17\"/>\n      <RoomStayCandidates>\n        <RoomStayCandidate>\n          <GuestCounts>\n            <GuestCount Count=\"2\" AgeQualifyingCode=\"10\"/>\n          </GuestCounts>\n        </RoomStayCandidate>\n      </RoomStayCandidates>\n      <HotelSearchCriteria>\n        <Criterion>\n          <RefPoint CodeContext=\"Country\">Spain</RefPoint>\n          <RefPoint CodeContext=\"Region\">Mallorca</RefPoint>\n        </Criterion>\n      </HotelSearchCriteria>\n    </AvailRequestSegment>\n  </AvailRequestSegments>\n</OTA_HotelAvailRQ>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://ota-int.axisdata.net:9443/hotelavailability")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/xml'
request.body = "<OTA_HotelAvailRQ xmlns=\"http://www.opentravel.org/OTA/2003/05\" MaxResponses=\"200\" EchoToken=\"1\" Version=\"2008.1\">\n  <POS>\n    <Source>\n      <RequestorID Instance=\"MF002\" ID_Context=\"AxisData\" ID=\"TEST\" Type=\"22\"/>\n    </Source>\n    <Source>\n      <RequestorID Type=\"88\" ID=\"TEST\" MessagePassword=\"testpass\"/>\n    </Source>\n  </POS>\n  <AvailRequestSegments>\n    <AvailRequestSegment InfoSource=\"12\">\n      <StayDateRange End=\"2029-07-24\" Start=\"2029-07-17\"/>\n      <RoomStayCandidates>\n        <RoomStayCandidate>\n          <GuestCounts>\n            <GuestCount Count=\"2\" AgeQualifyingCode=\"10\"/>\n          </GuestCounts>\n        </RoomStayCandidate>\n      </RoomStayCandidates>\n      <HotelSearchCriteria>\n        <Criterion>\n          <RefPoint CodeContext=\"Country\">Spain</RefPoint>\n          <RefPoint CodeContext=\"Region\">Mallorca</RefPoint>\n        </Criterion>\n      </HotelSearchCriteria>\n    </AvailRequestSegment>\n  </AvailRequestSegments>\n</OTA_HotelAvailRQ>"

response = http.request(request)
puts response.read_body

"<string>"