Delphi Dropbox API v2 file upload [closed] - delphi

Closed. This question needs debugging details. It is not currently accepting answers.
Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question.
Closed 5 years ago.
Improve this question
I'm developing in Delphi 7 a windows desktop software using Dropbox API V2.
My code doesn't work. Please provide me a correct examle Delphi code!
Thanks!
My code snippet:
procedure TDropbox.Upload(SourceFileName: String; DropBoxFileName: String; FTimeout: Integer = 5000);
const
FDropBoxAppAccessToken = 'xxxxxxxxxxxxxxxxxxxx';
var
FHTTPS: TIdHTTP;
FStream: TFileStream;
FDropBoxResponseCode: Integer;
FHTTPResponse: String;
begin
FHTTPRequestURL := 'https://api-content.dropbox.com/2/files/upload';
FStream := TFileStream.Create(SourceFileName, fmOpenRead);
FStream.Position := 0;
FHTTPS := TIdHTTP.Create(nil);
FHTTPS.ConnectTimeout := FTimeout;
FDropBoxResponseCode := 0;
FHTTPResponse := '';
params := TStringList.Create;
arg := 'Dropbox-API-Arg:{"path:"' + FDropBoxBaseAppPath + DropBoxFileName + '}';
try
FHTTPS.Request.CustomHeaders.Add('Authorization:Bearer ' + FDropBoxAppAccessToken);
FHTTPS.Request.CustomHeaders.AddStrings := '(Dropbox-API-Arg:{"path:"' + FDropBoxBaseAppPath + DropBoxFileName + '}');
FHTTPS.Request.CustomHeaders.Values[arg];
FHTTPS.Request.ContentType := 'application/octet-stream';
FHTTPS.IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(FHTTPS);
FHTTPResponse := FHTTPS.Post(FHTTPRequestURL, FStream);
except on E: Exception do
begin
end;
end;
Dropbox server always says:
400 Bad request, the source file is exists.
Please help!

You are sending the request to the wrong URL, you are misusing the Request.CustomHeaders property, and you are malforming your JSON data.
Try sonething more like this instead:
procedure TDropbox.Upload(const SourceFileName: String; const DropBoxFileName: String; Timeout: Integer = 5000);
const
FDropBoxAppAccessToken = 'xxxxxxxxxxxxxxxxxxxx';
FHTTPRequestURL := 'https://content.dropboxapi.com/2/files/upload';
var
FHTTPS: TIdHTTP;
FStream: TFileStream;
FDropBoxResponseCode: Integer;
FHTTPResponse: String;
begin
FDropBoxResponseCode := 0;
try
FStream := TFileStream.Create(SourceFileName, fmOpenRead or fmShareDenyWrite);
try
FHTTPS := TIdHTTP.Create(nil);
try
FHTTPS.ConnectTimeout := Timeout;
FHTTPS.Request.CustomHeaders.Values['Authorization'] := 'Bearer ' + FDropBoxAppAccessToken;
FHTTPS.Request.CustomHeaders.Values['Dropbox-API-Arg'] := '{"path": "' + FDropBoxBaseAppPath + DropBoxFileName + '"}';
FHTTPS.Request.ContentType := 'application/octet-stream';
FHTTPS.IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(FHTTPS);
FHTTPResponse := FHTTPS.Post(FHTTPRequestURL, FStream);
finally
FHTTPS.Free;
end;
finally
FStream.Free;
end;
except
on E: Exception do begin
end;
end;
end;

Related

Delphi: TOAuth2Authenticator with client_credentials

A while ago I wrote a method in Delphi 2010 to get the OAuth2 token using the Indy components (TidHttp). See code below.
I am now doing something new in Delphi 10.4 and would like to use the REST components such as RESTClient, RESTRequest, TOAuth2Authenticator, etc.
Our grant type is Client Credentials but in none of the examples on the net could I find on how to use TOAuth2Authenticator with Client Credentials. Is it even possible?
We have a client id, client secret and token URL. We do not have authorization or redirect endpoints. In Insomnia, the setup will look like this:
Does somebody know how to get the token using TOAuth2Authenticator with grant type = client_credentials?
Here is the Delphi 2010 code:
procedure TfrmToken.btnGetTokenClick(Sender: TObject);
var
IdHTTP: TidHttp;
lsHttpError: string;
loRequest: TStringStream;
loRespJson: TMemoryStream;
liSuper: iSuperObject;
ldtExpiry: TDateTime;
begin
IdHTTP := TIdHTTP.Create();
loRespJson := TMemoryStream.Create();
try
IdHTTP.HandleRedirects := False;
loRequest := TStringStream.Create('grant_type=client_credentials&client_id=' +
edtKey.Text + '&client_secret='+edtSecret.Text);
try
IdHttp.IOHandler := TIdSSLIOHandlerSocketOpenSSL.Create(IdHttp);
IdHttp.Request.ContentType := 'application/x-www-form-urlencoded';
try
IdHTTP.Post(edtURL.Text, loRequest, loRespJson);
except
on E: EIdHTTPProtocolException do
begin
lsHttpError := E.ErrorMessage;
end;
on E: Exception do
begin
lsHttpError := E.Message;
end;
end;
if idHTTP.ResponseCode = 200 then
begin
liSuper := SO(StreamToString(loRespJSon));
edtToken.Text := liSuper.S['access_token'];
ldtExpiry := IncSecond(Now, liSuper.i['expires_in']);
edtExpiry.Text := 'Expires in ' + liSuper.S['expires_in'] +
' seconds. Time: ' +
FormatDateTime('yyyy/dd/mm hh:nn:ss', ldtExpiry);
end
else
begin
liSuper := SO(lsHttpError);
edtToken.Text := IdHTTP.ResponseText;
edtExpiry.Text := '';
end;
finally
FreeAndNil(loRequest);
end;
finally
FreeAndNil(IdHTTP);
FreeAndNil(loRespJson);
end;
end;

Transfer of Large Stream from server to client fails

All,
I am working on a new datasnap project based on the example project located in C:\Users\Public\Documents\Embarcadero\Studio\18.0\Samples\Object Pascal\DataSnap\FireDAC_DBX.
I am trying to transfer a large stream (1,606,408 bytes) from datasnap server to client. I am running into what appears to be a common issue and that is that the entire stream does not make it to the client.
Here is my server code:
//Returns Customer Info
function TServerMethods.GetBPInfo(CardCode : String): TStringStream;
begin
Result := TStringStream.Create;
try
qBPInfo.Close;
if CardCode.Trim = '' then
qBPInfo.ParamByName('ParmCardCode').AsString := '%%'
else
qBPInfo.ParamByName('ParmCardCode').AsString := '%' + CardCode + '%';
qBPInfo.Open;
FDSchemaAdapterBPInfo.SaveToStream(Result, TFDStorageFormat.sfBinary);
Result.Position := 0;
// Result.SaveToFile('output.adb');
except
raise;
end;
end;
Here is my client code:
procedure TdmDataSnap.GetBPInfo(CardCode : String);
var
LStringStream : TStringStream;
begin
dmDataSnap.FDStoredProcBPInfo.ParamByName('CardCode').AsString := CardCode;
FDStoredProcBPInfo.ExecProc;
LStringStream := TStringStream.Create(FDStoredProcBPInfo.ParamByName('ReturnValue').asBlob);
//LStringStream.Clear;
//LStringStream.LoadFromFile('Output.adb');
try
if LStringStream <> nil then
begin
LStringStream.Position := 0;
try
DataModuleFDClient.FDSchemaAdapterBP.LoadFromStream(LStringStream, TFDStorageFormat.sfBinary);
except
on E : Exception do
showmessage(e.Message);
end;
end;
finally
LStringStream.Free;
end;
end;
You will see the stream save and load code; that is how I determined that the server was getting the entire result set into the stream, and that the client could handle the entire result set and display it properly.
So smaller streams transfer just fine, but this big one, when examined in the ide debugger, does not start with the 65,66,68,83 characters and the load fails with the error, '[FireDAC][Stan]-710. Invalid binary storage format'.
I know from extended Googling that there are work-arounds for this, but I do not understand how to apply the workarounds to my case, with the use of Tfdstoredproc and TfdSchemaAdaptor components. I'm trying to stay with this coding scheme.
How do I adapt this code to correctly receive large streams?
Update 1:
Ok, I tried strings and Base64 encoding. It didn't work.
Client Code:
procedure TdmDataSnap.GetBPInfo(CardCode : String);
var
LStringStream : TStringStream;
TempStream : TStringStream;
begin
dmDataSnap.FDStoredProcBPInfo.ParamByName('CardCode').AsString := CardCode;
FDStoredProcBPInfo.ExecProc;
try
TempStream := TStringStream.Create;
TIdDecoderMIME.DecodeStream(FDStoredProcBPInfo.ParamByName('ReturnValue').asString,TempStream);
if TempStream <> nil then
begin
TempStream.Position := 0;
try
DataModuleFDClient.FDSchemaAdapterBP.LoadFromStream(TempStream, TFDStorageFormat.sfBinary);
except
on E : Exception do
showmessage(e.Message);
end;
end;
finally
TempStream.Free;
end;
end;
Here is my server code:
//Returns Customer Info
function TServerMethods.GetBPInfo(CardCode : String): String;
var
TempStream : TMemoryStream;
OutputStr : String;
begin
Result := '';
TempStream := TMemoryStream.Create;
try
try
qBPInfo.Close;
if CardCode.Trim = '' then
qBPInfo.ParamByName('ParmCardCode').AsString := '%%'
else
qBPInfo.ParamByName('ParmCardCode').AsString := '%' + CardCode + '%';
qBPInfo.Open;
FDSchemaAdapterBPInfo.SaveToStream(TempStream, TFDStorageFormat.sfBinary);
TempStream.Position := 0;
OutputStr := IdEncoderMIMEBPInfo.EncodeStream(TempStream);
Result := OutputStr
except
raise;
end;
finally
TempStream.Free;
end;
end;
The result is the same.

Send emoji with indy delphi7

i want to send emoji with indy 9.00.10 on delphi 7. i use tnt VCL Controls .
i found this url http://apps.timwhitlock.info/emoji/tables/unicode for unicode and bytes code.
how to convert this codes to delphi Constants for Send with indy.
i use this delphi code for send message to telegram bot:
procedure TBotThread.SendMessage(ChatID:String; Text : WideString;
parse_mode:string;disable_notification:boolean);
Var
Stream: TStringStream;
Params: TIdMultipartFormDataStream;
//Text : WideString;
msg : WideString;
Src : string;
LHandler: TIdSSLIOHandlerSocket;
begin
try
try
if FShowBotLink then
Text := Text + LineBreak + FBotUser;
msg := '/sendmessage';
Stream := TStringStream.Create('');
Params := TIdMultipartFormDataStream.Create;
Params.AddFormField('chat_id',ChatID);
if parse_mode <> '' then
Params.AddFormField('parse_mode',parse_mode);
if disable_notification then
Params.AddFormField('disable_notification','true')
else
Params.AddFormField('disable_notification','false');
Params.AddFormField('disable_web_page_preview','true');
Params.AddFormField('text',UTF8Encode(Text));
LHandler := TIdSSLIOHandlerSocket.Create(nil);
FidHttpSend.ReadTimeout := 30000;
FidHttpSend.IOHandler:=LHandler;
LHandler.SSLOptions.Method := sslvTLSv1;
LHandler.SSLOptions.Mode := sslmUnassigned;
FidHttpSend.HandleRedirects := true;
FidHttpSend.Post(BaseUrl + API + msg, Params, Stream);
finally
Params.Free;
Stream.Free;
ENd;
except
on E: EIdHTTPProtocolException do
begin
if E.ReplyErrorCode = 403 then
begin
WriteToLog('Bot was blocked by the user');
end;
end;
end;
end;
bytes sample for emojies:
AERIAL_TRAMWAY = '\xf0\x9f\x9a\xa1';
AIRPLANE = '\xe2\x9c\x88';
ALARM_CLOCK = '\xe2\x8f\xb0';
ALIEN_MONSTER = '\xf0\x9f\x91\xbe';
sorry for bad english!!!
The Telegram Bot API supports several forms of input:
We support GET and POST HTTP methods. We support four ways of passing parameters in Bot API requests:
URL query string
application/x-www-form-urlencoded
application/json (except for uploading files)
multipart/form-data (use to upload files)
You are using the last option.
Indy 9 does not support Delphi 2009+ or Unicode. All uses of string are assumed to be AnsiString, which is the case in Delphi 7. Any AnsiString you add to TIdMultipartFormDataStream or TStrings, even a UTF-8 encoded one, will be transmitted as-is by TIdHTTP. However, there is no option to specify to the server that the string data is actually using UTF-8 as a charset. But, according to the docs:
All queries must be made using UTF-8.
So not specifying an explicit charset might not be problem.
If you still have problems with multipart/form-data, then consider using application/x-www-form-urlencoded (use TIdHTTP.Post(TStrings)) or application/json (use TIdHTTP.Post(TStream)) instead:
procedure TBotThread.SendMessage(ChatID: String; Text: WideString; parse_mode: string; disable_notification: boolean);
var
Params: TStringList;
LHandler: TIdSSLIOHandlerSocket;
begin
if FShowBotLink then
Text := Text + LineBreak + FBotUser;
Params := TStringList.Create;
try
Params.Add('chat_id=' + UTF8Encode(ChatID));
if parse_mode <> '' then
Params.Add('parse_mode=' + UTF8Encode(parse_mode));
if disable_notification then
Params.Add('disable_notification=true')
else
Params.Add('disable_notification=false');
Params.Add('disable_web_page_preview=true');
Params.Add('text=' + UTF8Encode(Text));
LHandler := TIdSSLIOHandlerSocket.Create(nil);
try
LHandler.SSLOptions.Method := sslvTLSv1;
LHandler.SSLOptions.Mode := sslmClient;
FidHttpSend.HandleRedirects := true;
FidHttpSend.ReadTimeout := 30000;
FidHttpSend.IOHandler := LHandler;
try
try
FidHttpSend.Post(BaseUrl + API + '/sendmessage', Params, TStream(nil));
except
on E: EIdHTTPProtocolException do
begin
if E.ReplyErrorCode = 403 then
begin
WriteToLog('Bot was blocked by the user');
end;
end;
end;
finally
FidHttpSend.IOHandler := nil;
end;
finally
LHandler.Free;
end;
finally
Params.Free;
end;
end;
procedure TBotThread.SendMessage(ChatID: String; Text: WideString; parse_mode: string; disable_notification: boolean);
var
Params: TStringStream;
LHandler: TIdSSLIOHandlerSocket;
function JsonEncode(const wStr: WideString): string;
var
I: Integer;
Ch: WideChar;
begin
// JSON uses UTF-16 text, so no need to encode to UTF-8...
Result := '';
for I := 1 to Length(wStr) do
begin
Ch := wStr[i];
case Ch of
#8: Result := Result + '\b';
#9: Result := Result + '\t';
#10: Result := Result + '\n';
#12: Result := Result + '\f';
#13: Result := Result + '\r';
'"': Result := Result + '\"';
'\': Result := Result + '\\';
'/': Result := Result + '\/';
else
if (Ord(Ch) >= 32) and (Ord(Ch) <= 126) then
Result := Result + AnsiChar(Ord(wStr[i]))
else
Result := Result + '\u' + IntToHex(Ord(wStr[i]), 4);
end;
end;
end;
begin
if FShowBotLink then
Text := Text + LineBreak + FBotUser;
Params := TStringStream.Create('');
try
Params.WriteString('{');
Params.WriteString('chat_id: "' + JsonEncode(ChatID) + '",');
if parse_mode <> '' then
Params.WriteString('parse_mode: "' + JsonEncode(parse_mode) + '",')
if disable_notification then
Params.WriteString('disable_notification: True,')
else
Params.WriteString('disable_notification: False,');
Params.WriteString('disable_web_page_preview: True,');
Params.WriteString('text: "' + JsonEncode(Text) + '"');
Params.WriteString('}');
Params.Position := 0;
LHandler := TIdSSLIOHandlerSocket.Create(nil);
try
LHandler.SSLOptions.Method := sslvTLSv1;
LHandler.SSLOptions.Mode := sslmClient;
FidHttpSend.HandleRedirects := true;
FidHttpSend.ReadTimeout := 30000;
FidHttpSend.IOHandler := LHandler;
try
try
FidHttpSend.Request.ContentType := 'application/json';
FidHttpSend.Post(BaseUrl + API + '/sendmessage', Params, TStream(nil));
except
on E: EIdHTTPProtocolException do
begin
if E.ReplyErrorCode = 403 then
begin
WriteToLog('Bot was blocked by the user');
end;
end;
end;
finally
FidHttpSend.IOHandler := nil;
end;
finally
LHandler.Free;
end;
finally
Params.Free;
end;
end;
That being said, your function's Text parameter is a WideString, which uses UTF-16, so you should be able to send any Unicode text, including emojis. If you are trying to generate text in your code, just make sure you UTF-16 encode any non-ASCII characters correctly. For example, codepoint U+1F601 GRINNING FACE WITH SMILING EYES is wide chars $D83D $DE01 in UTF-16:
var
Text: WideString;
Text := 'hi ' + #$D83D#$DE01; // 'hi 😁'
SendMessage('#channel', Text, 'Markup', False);
Alternatively, you can use HTML in your text messages, so you can encode non-ASCII characters using numerical HTML entities. According to the docs:
All numerical HTML entities are supported.
Codepoint U+1F601 is numeric entity $#128513; in HTML:
var
Text: WideString;
Text := 'hi $#128513;'; // 'hi 😁'
SendMessage('#channel', Text, 'HTML', False);

Why is my code causing a I/O 104 error?

This program raises an I/O 104 error on EoF when first entering the while loop.
The purpose of the program is to look up if a username is already taken. The existing usernames are stored in a text file.
procedure TForm1.btnRegisterClick(Sender: TObject);
begin
sCUser := edtUserName.Text;
AssignFile(tNames, 'Names.txt');
begin
try
Reset(tNames);
except
ShowMessage('File not found');
Exit;
end;
end;
rewrite(tNames);
while not EoF(tNames) do // I get a I/O 104 Error here `
begin
Readln(tNames, sLine);
iPosComme := Pos(',', sLine);
sUser := Copy(sLine, 1, iPosComme - 1);
Delete(sLine, 1, iPosComme - 1);
if sCUser = sUser then begin
ShowMessage('Username taken');
end
else
begin
rewrite(tNames);
Writeln(tNames, sCUser + ',' + '0');
CloseFile(tNames);
end;
end;
end;
Remove the call to Rewrite()before Eof(). Even if you were not getting an IO error, your code would still fail because Rewrite() closes the file you opened with Reset() and then it creates a new bank file, so Eof() would always be True.
Update: error 104 is file not open for input, which means Reset() is not opening the file but is not raising an exception (which sounds like an RTL bug if Eof() is raising an exception, indicating that {I+} is active).
In any case, using AssignFile() and related routines is the old way to do file I/O. You should use newer techniques, like FileOpen() with FileRead(), TFileStream with TStreamReader, TStringList, etc...
Update: your loop logic is wrong. You are comparing only the first line. If it does not match the user, you are wiping out the file, writing the user to a new file, closing the file, and then continuing the loop. EoF() will then fail at that point. You need to rewrite your loop to the following:
procedure TForm1.btnRegisterClick(Sender: TObject
var
SCUser, sUser: String;
tNames: TextFile;
iPosComme: Integer;
Found: Boolean;
begin
sCUser := edtUserName.Text;
AssignFile(tNames,'Names.txt');
try
Reset(tNames);
except
ShowMessage('File not found');
Exit;
end;
try
Found := False;
while not EoF(tNames) do
begin
Readln(tNames,sLine);
iPosComme := Pos(',', sLine);
sUser := Copy(sLine ,1,iPosComme -1);
if sCUser = sUser then
begin
ShowMessage('Username taken') ;
Found := True;
Break;
end;
end;
if not Found then
Writeln(tNames,sCUser + ',0');
finally
CloseFile(tNames);
end;
end;
For the sake of completeness, this Version works for me, but it is hard to guess what the code is intended to do. Especially the while loop seems a bit displaced, since the file will contain exactly one line after the rewrite-case has ben hit once.
program wtf;
{$APPTYPE CONSOLE}
{$I+}
uses
SysUtils;
procedure Sample( sCUser : string);
var sUser, sLine : string;
iPosComme : Integer;
tnames : textfile;
begin
AssignFile(tNames,'Names.txt');
try
Reset(tNames);
except
Writeln('File not found');
Exit;
end;
while not EoF(tNames) do
begin
Readln(tNames,sLine);
iPosComme := Pos(',', sLine);
sUser := Copy(sLine ,1,iPosComme -1);
Delete( sLine,1, iPosComme -1);
if sCuser = sUser then begin
Writeln('Username taken') ;
end
else begin
Rewrite(tNames);
Writeln(tNames,sCUser + ',' + '0');
CloseFile(tNames);
Break; // file has been overwritten and closed
end;
end;
end;
begin
try
Sample('foobar');
except
on E: Exception do Writeln(E.ClassName, ': ', E.Message);
end;
end.
I wrote a version of this method that uses the newer TStreamReader and TStreamWriter classes.
This won't work with Delphi 7 of course, it's just to show how this could be done in newer versions of Delphi.
The code was heavily inspired by Remys answer.
procedure TForm1.btnRegisterClick(Sender: TObject);
var
Stream: TStream;
Reader: TStreamReader;
Writer: TStreamWriter;
Columns: TStringList;
UserName: string;
Found: Boolean;
FileName: string;
Encoding: TEncoding;
begin
FileName := ExpandFileName('Names.txt'); // An absolute path would be even better
UserName := edtUsername.Text;
Found := False;
Encoding := TEncoding.Default; // or another encoding, e.g. TEncoding.Unicode for Unicode
Stream := TFileStream.Create(FileName, fmOpenRead or fmShareDenyWrite);
try
Reader := TStreamReader.Create(Stream, Encoding);
try
Columns := TStringList.Create;
try
Columns.Delimiter := ',';
Columns.StrictDelimiter := True; // or False, depending on the file format
while not Reader.EndOfStream do
begin
Columns.DelimitedText := Reader.ReadLine;
if Columns.Count > 0 then
begin
if AnsiSameStr(Columns[0], UserName) then // or AnsiSameText if UserName is not case-sensitive
begin
ShowMessage('Username taken') ;
Found := True;
Break;
end;
end;
end;
finally
Columns.Free;
end;
finally
Reader.Free;
end;
finally
Stream.Free;
end;
if not Found then
begin
Writer := TStreamWriter.Create(FileName, True, Encoding);
try
// Warning: This will cause problems when the file does not end with a new line
Writer.WriteLine(UserName + ',0');
finally
Writer.Free;
end;
end;
end;
If performance and memory usage are not a concern:
procedure TForm1.btnRegisterClick(Sender: TObject);
var
Rows: TStringList;
Columns: TStringList;
UserName: string;
Found: Boolean;
FileName: string;
Encoding: TEncoding;
Row: string;
begin
FileName := ExpandFileName('Names.txt'); // An absolute path would be even better
UserName := edtUsername.Text;
Found := False;
Encoding := TEncoding.Default; // or another encoding, e.g. TEncoding.Unicode for Unicode
Rows := TStringList.Create;
try
Rows.LoadFromFile(FileName, Encoding);
Columns := TStringList.Create;
try
Columns.Delimiter := ',';
Columns.StrictDelimiter := True; // or False, depending on the file format
for Row in Rows do
begin
Columns.DelimitedText := Row;
if Columns.Count > 0 then
begin
if AnsiSameStr(Columns[0], UserName) then // or AnsiSameText if UserName is not case-sensitive
begin
ShowMessage('Username taken') ;
Found := True;
Break;
end;
end;
end;
finally
Columns.Free;
end;
if not Found then
begin
Rows.Add(UserName + ',0');
Rows.SaveToFile(FileName, Encoding);
end;
finally
Rows.Free;
end;
end;
This solution can be adapted to Delphi 7 by removing the Encoding variable.
If it's part of a bigger database it should be stored in a real database management system rather than a text file.

HTTPS post - what I'm doing wrong?

I'm making requests to the webaddress to get XML files throught the HTTPS connection. But this connection works like 50%. In most cases it fails. Usual error is "socket error #10060". Or "Error connecting with SSL. EOF was observed that violates the protocol". What I'm doing wrong?
function SendRequest(parameters: string): IXMLDocument;
var
sPostData: TStringList;
sHttpSocket: TIdHTTP;
sshSocketHandler: TIdSSLIOHandlerSocketOpenSSL;
resStream: TStringStream;
xDoc: IXMLDocument;
begin
sPostData := TStringList.Create;
try
sPostData.Add('add some parameter to post' + '&');
sPostData.Add('add some parameter to post' + '&');
sPostData.Add('add some parameter to post' + '&');
sPostData.Add(parameters);
sHttpSocket := TIdHTTP.Create;
sshSocketHandler := TIdSSLIOHandlerSocketOpenSSL.Create;
sHttpSocket.IOHandler := sshSocketHandler;
sHttpSocket.Request.ContentType := 'application/x-www-form-urlencoded';
sHttpSocket.Request.Method := 'POST';
resStream := TStringStream.Create;
sHttpSocket.Post(Self.sUrl, sPostData, resStream);
xDoc := CreateXMLDoc;
xDoc.LoadFromStream(resStream);
Result := xDoc;
resStream.Free;
sHttpSocket.Free;
sshSocketHandler.Free;
sPostData.Free;
except on E: Exception do
begin
TCommon.ErrorLog('errorLog.txt', DateTimeToStr(Now) + ' ' + E.Message);
end
end;
end;
Maybe I can do this in another way, that works like 100%, when internet connection is available?
Regards,
evilone
An "EOF" error suggests you are connnecting to a server that is not actually using SSL to begin with, or the SSL data may be corrupted.
Besides that, why are you including explicit '&' characters between your post data parameters? Don't do that, Indy will just encode them and send its own '&' characters. Also, consider using TMemoryStream instead of TStringStream to ensure IXMLDocumect.LoadFromStream() is loading the server's original raw XML data as-is, and not an altered version that the RTL/VCL produces due to Unicode handling (TStringStream is TEncoding-enabled).
Edit: Given the URL you provided, an example of calling verifyUser() would look like this:
const
ERPLYAccountCode = '...';
function verifyUser(const user, pass: string; const sessionLength: Integer = 3600): IXMLDocument;
var
sPostData: TStringList;
sHttpSocket: TIdHTTP;
sshSocketHandler: TIdSSLIOHandlerSocketOpenSSL;
resStream: TMemoryStream;
xDoc: IXMLDocument;
begin
Result := nil;
try
resStream := TMemoryStream.Create;
try
sPostData := TStringList.Create;
try
sPostData.Add('clientCode=' + ERPLYAccountCode);
sPostData.Add('request=verifyUser');
sPostData.Add('version=1.0');
sPostData.Add('responseType=XML');
sPostData.Add('responseMode=normal');
sPostData.Add('username=' + user);
sPostData.Add('password=' + pass);
sPostData.Add('sessionLength=' + IntToStr(sessionLength));
sHttpSocket := TIdHTTP.Create;
try
sshSocketHandler := TIdSSLIOHandlerSocketOpenSSL.Create(sHttpSocket);
sHttpSocket.IOHandler := sshSocketHandler;
sHttpSocket.Request.ContentType := 'application/x-www-form-urlencoded';
sHttpSocket.Post('https://www.erply.net/api/', sPostData, resStream);
finally
sHttpSocket.Free;
end;
finally
sPostData.Free;
end;
resStream.Position := 0;
xDoc := CreateXMLDoc;
xDoc.LoadFromStream(resStream);
Result := xDoc;
finally
resStream.Free;
end;
except
on E: Exception do
begin
TCommon.ErrorLog('errorLog.txt', DateTimeToStr(Now) + ' ' + E.Message);
end;
end;
end;

Resources