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Regards, I'm searching how to create an HTTP POST request, but I can't manage to do it. This is a SOAP Service that I can consume using the ?wsdl (now is hidden); but some nice provider write this: POST https://consultaqr.facturaelectronica.sat.gob.mx/ConsultaCFDIService.svc?wsdl HTTP/1.1 Content-type: text/xml;charset="utf-8" Accept: text/xml SOAPAction: http://tempuri.org/IConsultaCFDIService/Consulta cache-control: no-cache Host: consultaqr.facturaelectronica.sat.gob.mx accept-encoding: gzip, deflate content-length: 414 Connection: close <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:tem="http://tempuri.org/"> <soapenv:Header/> <soapenv:Body> <tem:Consulta> <!--Optional:--> <tem:expresionImpresa><![CDATA[?re=LSO1306189R5&rr=GACJ940911ASA&tt=4999.99&id=e7df3047-f8de-425d-b469-37abe5b4dabb]]></tem:expresionImpresa> </tem:Consulta> </soapenv:Body> </soapenv:Envelope> I try something like this, using Indy; but the web is a dark box for me in Delphi. // I'm trying using the REST clients, the Indy Http, ... uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Xml.xmldom, Xml.XMLIntf, Vcl.ComCtrls, Xml.Win.msxmldom, Xml.XMLDoc ,Vcl.StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection, IdTCPClient, IdHTTP, Xml.omnixmldom, IPPeerClient, REST.Client, Data.Bind.Components, Data.Bind.ObjectScope, IdIOHandler, IdIOHandlerSocket, IdIOHandlerStack, IdSSL, IdSSLOpenSSL; ... uses IdMultipartFormData; ... procedure TForm3.Button3Click(Sender: TObject); var data: TIdMultiPartFormDataStream; begin data := TIdMultiPartFormDataStream.Create; try // add the used parameters for the script data.AddFormField('expresionImpresa', '?re=LAN8507268IA&rr=LAN7008173R5&tt=5800.00&id=4e87d1d7-a7d0-465f-a771-1dd216f63c1a'); // Call the Post method of TIdHTTP and read the result into TMemo Memo1.Lines.Text := IdHTTP1.Post('https://consultaqr.facturaelectronica.sat.gob.mx/ConsultaCFDIService.svc', data); //ERROR //HTTP/1.1 415 Cannot process the message because the content type 'multipart/form-data; boundary=--------111018174150958' //was not the expected type 'text/xml; charset=utf-8'. //--------------------------- finally data.Free; end; end; procedure TForm3.Button2Click(Sender: TObject); var S: TStringList; M: TStream; begin S := TStringList.Create; M := TMemoryStream.Create; try S.Values['expresionImpresa'] := '?re=LAN8507268IA&rr=LAN7008173R5&tt=5800.00&id=4e87d1d7-a7d0-465f-a771-1dd216f63c1a'; //'![CDATA[?re=LAN8507268IA&rr=LAN7008173R5&tt=5800.00&id=4e87d1d7-a7d0-465f-a771-1dd216f63c1a]]'; IdHTTP1.IOHandler := IdSSLIOHandlerSocketOpenSSL1; //IdHTTP1.Request.ContentType := 'application/x-www-form-urlencoded'; IdHTTP1.Post('https://consultaqr.facturaelectronica.sat.gob.mx/ConsultaCFDIService.svc', S, M); Memo1.Lines.Add(Format('Response Code: %d', [IdHTTP1.ResponseCode])); Memo1.Lines.Add(Format('Response Text: %s', [IdHTTP1.ResponseText])); // ERROR: //HTTP/1.1 415 Cannot process the message because the content type //'application/x-www-form-urlencoded' was not the expected type 'text/xml; charset=utf-8'. //--------------------------- M.Position := 0; S.LoadFromStream(M); Memo1.Lines.AddStrings(S); finally S.Free; M.Free; end; end; Consuming the web services is a lot easier, just I need to Import the WSDL (is hidden right now but I still manage to get before), create the unit and start using the service, the consume is just: procedure TwsConsultaCFDIEmpresa.doConsulta (const representacionI : string); var ics : IConsultaCFDIService; vAcuse : Acuse2; begin try ics := GetIConsultaCFDIService(false); // representacionI is something like: // ?re=LAN8507268IA&rr=LAN7008173R5&tt=5800.00&id=4e87d1d7-a7d0-465f-a771-1dd216f63c1a vAcuse:= ics.Consulta(representacionI); finally with vAcuse do ShowMessage(CodigoEstatus +'/ '+EsCancelable +'/ '+ Estado +'/ '+EstatusCancelacion); end; end; I need to read some basic documentation, but alas, I don't know how to start. Maybe with a working example can I go forward. I don't know if using the "REST clients" are something that I need. Edit: Using Firefox I got an extension named "Httprequester" but I can't make a successful request/POST. Thanks in advance