Scenery

I trying make an a call to an service in IBM Cloud and I have send an file. This request must be done in Sharepoint Online using JavaScript. In the request a file will be sent. Problem I have problem with cross domain(Sharepoint side) and bad request(IBM side) in Sharepoint Online. I tried sereval ways.

Attempts

To solve Cross domain problem

$  .ajax({ url: "../_api/SP.WebProxy.invoke", type: "POST", data: JSON.stringify(     {         "requestInfo": {             "__metadata": { "type": "SP.WebRequestInfo" },             "Url": "https://gateway-a.watsonplatform.net/visual-recognition/api/v3/classify?api_key={API-KEY}&version=2016-05-20",             "Method": "POST",             "Headers": {                 "results": [{                     "__metadata": { "type": "SP.KeyValue" },                      "Key": "Accept",                     "Value": "application/json;odata=verbose",                     "ValueType": "Edm.String"                 }, {                     "__metadata": { "type": "SP.KeyValue" },                     "Key": "Content-Type",                     "Value": "application/json",                     "ValueType": "Edm.String"                 }]             }             ,             "Body": JSON.stringify({ "files":[ { "name":"imagem.png","content": image } ]})//Problem here         }     }), headers: {     "Accept": "application/json;odata=verbose",     "Content-Type": "application/json;odata=verbose",     "X-RequestDigest": $  ("#__REQUESTDIGEST").val() }, success: function (data) {     alert("Sucesso");     console.log(data.d.Invoke.StatusCode);     console.log(JSON.stringify(data.d.Invoke.Body)); }, error: function (data) {     alert("Falha");     console.log(arguments[2]); } }); 

This way the problem Cross domain(Sharepoint) is solved, but I receive Bad request(IBM API). The model resquest send file is show bellow.

"Body": JSON.stringify({ "files":[ { "name":"imagem.png","content": image } ]}) 

To solve Bad request problem:

function CORS() { var data = new FormData(); data.append("imagemTeste", $  ("#imagem")[0].files[0]);  var xhr = new XMLHttpRequest(); xhr.open('POST', 'https://gateway-a.watsonplatform.net/visual-recognition/api/v3/classify?api_key=1c117564efeabecbea9841b49b1aa04b4cc71da6&version=2016-05-20'); xhr.onload = function (e) {     var data = JSON.parse(this.response);     console.log(data); }     xhr.send(data); } 

Here the problem Bad request is solved(IBM API), but I get cross domain error(Sharepoint). I’m out of ideas to solve this.