Hello! I'm implementing a credit card form in an Angular 4 application which uses the Paypal Payflow API to process payments. I've already created testing and production accounts in Paypal Manager. In order to post test transactions I use Postman. From this application, I execute a POST request to https://pilot-payflowpro.paypal.com and send something like the string below in the request body: USER=****&PARTNER=PayPal&VENDOR=****&PWD=****&ACCT=****&EXPDATE=102020&TENDER=C&TRXTYPE=A&AMT=100&VERBOSITY=HIGH Once I execute the request in Postman, It works just fine and the server returns with the expected string response. Now, I implemented an Angular 4 application, wich uses the HttpClient Angular Library to execute post transactions; the request is looks something like this: const httpHeaders: HttpHeaders = new HttpHeaders( { 'Content-Type': 'text/plain'}); this.httpService.post( 'https://pilot-payflowpro.paypal.com', 'USER=****&PARTNER=PayPal&VENDOR=****&PWD=****&ACCT=****&EXPDATE=102020&TENDER=C&TRXTYPE=A&AMT=100&VERBOSITY=HIGH', { headers: httpHeaders, responseType: 'text' } ) .catch( ( error ) => { console.log('error in requestPayflowPaymentToPayflowGatewayApi'); return Observable.throw(error); } ); It's just a basic post request but it doesn't work when I execute the application in the browser; I get the next error in the console log: Failed to load https://pilot-payflowpro.paypal.com/: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:4200' is therefore not allowed access. Now, there is something really strange abouit it; When I disable web security in Google Chrome, which I do by opening Google Chrome running the command below in Windows, the application works just fine, executes the request to the server and it returns the expected response. chrome.exe --user-data-dir="C:/Chrome dev session" --disable-web-security I have the same issue when I post request using production data (a production Paypal Manager Account pointing to https://payflowpro.paypal.com) Have anybody had this issue? What do you guys think that could be the problem here? Thanks in advance, Alexis Bravo
... View more
