Translating curl into Matlab/Webwrite

I have the following curl command I need to sent to a web server using Matlab and webwrite using POST. My problem is that I always get a "Bad request" answer so my syntax must be wrong somehow. Does anybody have an idea how this curl command, sending the body could look like in Matlab using webwrite in a correct way ?

body=$(cat << EOF
{
  "order": {
    "units": "100",
    "instrument": "EUR_USD",
    "timeInForce": "FOK",
    "type": "MARKET",
    "positionFill": "DEFAULT"
  }
}
EOF
)

curl \
  -X POST \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer <AUTHENTICATION TOKEN>" \
  -d "$body" \
  "https://api-fxtrade.oanda.com/v3/accounts/<ACCOUNT>/orders"

Answer 1

[Frank Schmull]

Thank you very much for your answer. I think I will check in addition the server configuration with the provider.

[Paolo]

You are welcome!

Answer 2

[Paolo]

Hi Frank,

Weboptions allows you to add headers to the POST request.

%Body of POST request.
data = struct('units',100,'instrument','EUR_USD','timeInForce','FOK',...
       'type','MARKET','positionFill','DEFAULT');

%Options for request.
options = weboptions('RequestMethod','POST','MediaType','application/json',...
       'KeyName','Authorization: Bearer','KeyValue','abc');

server_url = 'https://api-fxtrade.oanda.com/v3/accounts/<ACCOUNT>/orders';
response = webwrite(server_url,data,options);

The code should allow you to successfully complete a POST request. If you are still receiving a 'Bad Request' reply it is possible that the server is not configured as you think it is.

Alternatively, you can just run 'curl' from within Matlab using system.

Answer 3

[sherhraza]

Hi,

I have a similar problem. I want to convert the following command from GIT BASH to a local server in my company to matlab.

$ curl -X POST http://<ServerName> -d '{"variables":{"$URL":{"stringArray":{"values":["corbaname::"abcName.ASAM-ODS"]}}}}' --header 'Accept: application/x-asamods+json' --header 'Content-Type: application/x-asamods+json' -u username:password -i

This works on GIT Bash as i get a 201 return message with the required data.

I want to shift this to Matlab.

This is what i have so far

url = 'http://<ServerName>';

data = '{"variables":{"$URL":{"stringArray":{"values":["corbaname::#abcName.ASAM-ODS"]}}}}}'

options = weboptions('RequestMethod','POST','MediaType','application/json','HeaderFields',{'Content-Type:' 'application/x-asamods+json'; 'Accept' 'application/x-asamods+json' });

data = webwrite(url,data,options);

From Matlab i get an error code 400 for a bad request.

Any ideas on what i am doing wrong? Any help will be greatly appreciated.