[FTP] Upload fichier à travers proxy: pas pris en charge par FtpWebRequest // C#2.0

Bjr,


J'ai un serieux pb, j'arrive à envoyer un fichier depuis mon poste en entreprise avec IE et filezilla client... mais avec du code C# ... j'ai une exception: "La commande FTP demandée n'est pas prise en charge lors de l'utilisation du proxy HTTP" !!!

voici le code: (tiré de la msdn)

Code:

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public static string UploadFile(string url, string filePath) { Uri serverUri = new Uri(url); string status;   FtpWebRequest request = ExecuteConnection(new Uri(url), WebRequestMethods.Ftp.UploadFile);   StreamReader sourceStream = new StreamReader(filePath); byte [] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd()); sourceStream.Close(); request.ContentLength = fileContents.Length;   Stream requestStream = request.GetRequestStream(); requestStream.Write(fileContents, 0, fileContents.Length); requestStream.Close();   FtpWebResponse response = (FtpWebResponse)request.GetResponse();   //Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription); status = response.StatusDescription; response.Close();   return null; }

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j'ai essayé de passer par un proxy different en changeant de conf mon IE, j'ai aussi ajouté à mon app config:

Code:

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<system.net> <defaultProxy enabled="true" useDefaultCredentials="true"/> </system.net>

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sans succés


je precise que j'arrive pourtant à lister le repertoire FTP !!!
mais que l'upload ne fonctionne visiblement pas en dotnet

d'après http://msdn.microsoft.com/fr-fr/libr...st(VS.80).aspx :

Citation:

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" Si la propriété Proxy est définie, directement ou dans un fichier de configuration, les communications avec le serveur FTP s'effectuent par l'intermédiaire du proxy spécifié. Si le proxy spécifié est un proxy HTTP, seules les commandes DownloadFile, ListDirectory et ListDirectoryDetails sont prises en charge. "

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y a une astuce pour eviter ce phenomene !!?


j'ai trouvé ca qui parle un peu du probleme avec les proxy
http://thekalana.blogspot.com/2008/0...ad-with-c.html

mais ca marche pas meme erreur...

si je met

Code:

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request.Proxy = null;

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j'ai une erreur...


L'URI demandée n'est pas valide pour cette commande FTP.

normal... pour sortir vers l'exterieur je dois forcement utiliser le proxy... gniarf

je m'apprête à utiliser du DOS... ahaha

d'ailleurs si quelqu un sait comment executer
ftp
open machin.fr
put file_path



en shellexecute jsuis preneur

J'utilise cette lib bas niveau pour uploader ducoup....

pff j'ai le meme probleme avec la demande d'heure du serveur WebRequestMethods.Ftp.GetDateTimestamp .... n'est pas authorisé a travers un proxy HTTP....

quel enfer cette framework !!

Code:

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using System; using System.Net; using System.IO; using System.Text; using System.Net.Sockets; using System.Diagnostics; using System.Runtime.Remoting; using System.Runtime.Remoting.Messaging;   /*  * FTP Client library in C#  * Author: Jaimon Mathew  * mailto:jaimonmathew@rediffmail.com  * http://www.csharphelp.com/archives/archive9.html  *  * Addapted for use by Dan Glass 07/03/03  */     namespace Project {   public class FtpClient {   public class FtpException : Exception { public FtpException(string message) : base(message) { } public FtpException(string message, Exception innerException) : base(message, innerException) { } }   private static int BUFFER_SIZE = 512; private static Encoding ASCII = Encoding.ASCII;   private bool verboseDebugging = false;   // defaults private string server = "localhost"; private string remotePath = "."; private string username = "anonymous"; private string password = "anonymous@anonymous.net"; private string message = null; private string result = null;   private int port = 21; private int bytes = 0; private int resultCode = 0;   private bool loggedin = false; private bool binMode = false;   private Byte[] buffer = new Byte[BUFFER_SIZE]; private Socket clientSocket = null;   private int timeoutSeconds = 10;   /// <summary> /// Default contructor /// </summary> public FtpClient() { } /// <summary> /// /// </summary> /// <param name="server"></param> /// <param name="username"></param> /// <param name="password"></param> public FtpClient(string server, string username, string password) { this.server = server; this.username = username; this.password = password; } /// <summary> /// /// </summary> /// <param name="server"></param> /// <param name="username"></param> /// <param name="password"></param> /// <param name="timeoutSeconds"></param> /// <param name="port"></param> public FtpClient(string server, string username, string password, int timeoutSeconds, int port) { this.server = server; this.username = username; this.password = password; this.timeoutSeconds = timeoutSeconds; this.port = port; }   /// <summary> /// Display all communications to the debug log /// </summary> public bool VerboseDebugging { get { return this.verboseDebugging; } set { this.verboseDebugging = value; } } /// <summary> /// Remote server port. Typically TCP 21 /// </summary> public int Port { get { return this.port; } set { this.port = value; } } /// <summary> /// Timeout waiting for a response from server, in seconds. /// </summary> public int Timeout { get { return this.timeoutSeconds; } set { this.timeoutSeconds = value; } } /// <summary> /// Gets and Sets the name of the FTP server. /// </summary> /// <returns></returns> public string Server { get { return this.server; } set { this.server = value; } } /// <summary> /// Gets and Sets the port number. /// </summary> /// <returns></returns> public int RemotePort { get { return this.port; } set { this.port = value; } } /// <summary> /// GetS and Sets the remote directory. /// </summary> public string RemotePath { get { return this.remotePath; } set { this.remotePath = value; }   } /// <summary> /// Gets and Sets the username. /// </summary> public string Username { get { return this.username; } set { this.username = value; } } /// <summary> /// Gets and Set the password. /// </summary> public string Password { get { return this.password; } set { this.password = value; } }   /// <summary> /// If the value of mode is true, set binary mode for downloads, else, Ascii mode. /// </summary> public bool BinaryMode { get { return this.binMode; } set { if (this.binMode == value) return;   if (value) sendCommand("TYPE I");   else sendCommand("TYPE A");   if (this.resultCode != 200) throw new FtpException(result.Substring(4)); } } /// <summary> /// Login to the remote server. /// </summary> public void Login() { if (this.loggedin) this.Close();   Debug.WriteLine("Opening connection to " + this.server, "FtpClient");   IPAddress addr = null; IPEndPoint ep = null;   try { this.clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); addr = Dns.Resolve(this.server).AddressList[0]; ep = new IPEndPoint(addr, this.port); this.clientSocket.Connect(ep); } catch (Exception ex) { // doubtfull if (this.clientSocket != null && this.clientSocket.Connected) this.clientSocket.Close();   throw new FtpException("Couldn't connect to remote server", ex); }   this.readResponse();   if (this.resultCode != 220) { this.Close(); throw new FtpException(this.result.Substring(4)); }   this.sendCommand("USER " + username);   if (!(this.resultCode == 331 || this.resultCode == 230)) { this.cleanup(); throw new FtpException(this.result.Substring(4)); }   if (this.resultCode != 230) { this.sendCommand("PASS " + password);   if (!(this.resultCode == 230 || this.resultCode == 202)) { this.cleanup(); throw new FtpException(this.result.Substring(4)); } }   this.loggedin = true;   Debug.WriteLine("Connected to " + this.server, "FtpClient");   this.ChangeDir(this.remotePath); }   /// <summary> /// Close the FTP connection. /// </summary> public void Close() { Debug.WriteLine("Closing connection to " + this.server, "FtpClient");   if (this.clientSocket != null) { this.sendCommand("QUIT"); }   this.cleanup(); }   /// <summary> /// Return a string array containing the remote directory's file list. /// </summary> /// <returns></returns> public string[] GetFileList() { return this.GetFileList("*.*"); }   /// <summary> /// Return a string array containing the remote directory's file list. /// </summary> /// <param name="mask"></param> /// <returns></returns> public string[] GetFileList(string mask) { if (!this.loggedin) this.Login();   Socket cSocket = createDataSocket();   this.sendCommand("NLST " + mask);   if (!(this.resultCode == 150 || this.resultCode == 125)) throw new FtpException(this.result.Substring(4));   this.message = "";   DateTime timeout = DateTime.Now.AddSeconds(this.timeoutSeconds);   while (timeout > DateTime.Now) { int bytes = cSocket.Receive(buffer, buffer.Length, 0); this.message += ASCII.GetString(buffer, 0, bytes);   if (bytes < this.buffer.Length) break; }   string[] msg = this.message.Replace("\r", "").Split('\n');   cSocket.Close();   if (this.message.IndexOf("No such file or directory") != -1) msg = new string[] { };   this.readResponse();   if (this.resultCode != 226) msg = new string[] { }; // throw new FtpException(result.Substring(4));   return msg; }   /// <summary> /// Return the size of a file. /// </summary> /// <param name="fileName"></param> /// <returns></returns> public long GetFileSize(string fileName) { if (!this.loggedin) this.Login();   this.sendCommand("SIZE " + fileName); long size = 0;   if (this.resultCode == 213) size = long.Parse(this.result.Substring(4));   else throw new FtpException(this.result.Substring(4));   return size; }     /// <summary> /// Download a file to the Assembly's local directory, /// keeping the same file name. /// </summary> /// <param name="remFileName"></param> public void Download(string remFileName) { this.Download(remFileName, "", false); }   /// <summary> /// Download a remote file to the Assembly's local directory, /// keeping the same file name, and set the resume flag. /// </summary> /// <param name="remFileName"></param> /// <param name="resume"></param> public void Download(string remFileName, Boolean resume) { this.Download(remFileName, "", resume); }   /// <summary> /// Download a remote file to a local file name which can include /// a path. The local file name will be created or overwritten, /// but the path must exist. /// </summary> /// <param name="remFileName"></param> /// <param name="locFileName"></param> public void Download(string remFileName, string locFileName) { this.Download(remFileName, locFileName, false); }   /// <summary> /// Download a remote file to a local file name which can include /// a path, and set the resume flag. The local file name will be /// created or overwritten, but the path must exist. /// </summary> /// <param name="remFileName"></param> /// <param name="locFileName"></param> /// <param name="resume"></param> public void Download(string remFileName, string locFileName, Boolean resume) { if (!this.loggedin) this.Login();   this.BinaryMode = true;   Debug.WriteLine("Downloading file " + remFileName + " from " + server + "/" + remotePath, "FtpClient");   if (locFileName.Equals("")) { locFileName = remFileName; }   FileStream output = null;   if (!File.Exists(locFileName)) output = File.Create(locFileName);   else output = new FileStream(locFileName, FileMode.Open);   Socket cSocket = createDataSocket();   long offset = 0;   if (resume) { offset = output.Length;   if (offset > 0) { this.sendCommand("REST " + offset); if (this.resultCode != 350) { //Server dosnt support resuming offset = 0; Debug.WriteLine("Resuming not supported:" + result.Substring(4), "FtpClient"); } else { Debug.WriteLine("Resuming at offset " + offset, "FtpClient"); output.Seek(offset, SeekOrigin.Begin); } } }   this.sendCommand("RETR " + remFileName);   if (this.resultCode != 150 && this.resultCode != 125) { throw new FtpException(this.result.Substring(4)); }   DateTime timeout = DateTime.Now.AddSeconds(this.timeoutSeconds);   while (timeout > DateTime.Now) { this.bytes = cSocket.Receive(buffer, buffer.Length, 0); output.Write(this.buffer, 0, this.bytes);   if (this.bytes <= 0) { break; } }   output.Close();   if (cSocket.Connected) cSocket.Close();   this.readResponse();   if (this.resultCode != 226 && this.resultCode != 250) throw new FtpException(this.result.Substring(4)); }     /// <summary> /// Upload a file. /// </summary> /// <param name="fileName"></param> public void Upload(string fileName) { this.Upload(fileName, false); }     /// <summary> /// Upload a file and set the resume flag. /// </summary> /// <param name="fileName"></param> /// <param name="resume"></param> public void Upload(string fileName, bool resume) { if (!this.loggedin) this.Login();   Socket cSocket = null; long offset = 0;   if (resume) { try { this.BinaryMode = true;   offset = GetFileSize(Path.GetFileName(fileName)); } catch (Exception) { // file not exist offset = 0; } }   // open stream to read file FileStream input = new FileStream(fileName, FileMode.Open);   if (resume && input.Length < offset) { // different file size Debug.WriteLine("Overwriting " + fileName, "FtpClient"); offset = 0; } else if (resume && input.Length == offset) { // file done input.Close(); Debug.WriteLine("Skipping completed " + fileName + " - turn resume off to not detect.", "FtpClient"); return; }   // dont create untill we know that we need it cSocket = this.createDataSocket();   if (offset > 0) { this.sendCommand("REST " + offset); if (this.resultCode != 350) { Debug.WriteLine("Resuming not supported", "FtpClient"); offset = 0; } }   this.sendCommand("STOR " + Path.GetFileName(fileName));   if (this.resultCode != 125 && this.resultCode != 150) throw new FtpException(result.Substring(4));   if (offset != 0) { Debug.WriteLine("Resuming at offset " + offset, "FtpClient");   input.Seek(offset, SeekOrigin.Begin); }   Debug.WriteLine("Uploading file " + fileName + " to " + remotePath, "FtpClient");   while ((bytes = input.Read(buffer, 0, buffer.Length)) > 0) { cSocket.Send(buffer, bytes, 0); }   input.Close();   if (cSocket.Connected) { cSocket.Close(); }   this.readResponse();   if (this.resultCode != 226 && this.resultCode != 250) throw new FtpException(this.result.Substring(4)); }   /// <summary> /// Upload a directory and its file contents /// </summary> /// <param name="path"></param> /// <param name="recurse">Whether to recurse sub directories</param> public void UploadDirectory(string path, bool recurse) { this.UploadDirectory(path, recurse, "*.*"); }   /// <summary> /// Upload a directory and its file contents /// </summary> /// <param name="path"></param> /// <param name="recurse">Whether to recurse sub directories</param> /// <param name="mask">Only upload files of the given mask - everything is '*.*'</param> public void UploadDirectory(string path, bool recurse, string mask) { string[] dirs = path.Replace("/", @"\").Split('\\'); string rootDir = dirs[dirs.Length - 1];   // make the root dir if it doed not exist if (this.GetFileList(rootDir).Length < 1) this.MakeDir(rootDir);   this.ChangeDir(rootDir);   foreach (string file in Directory.GetFiles(path, mask)) {                 this.Upload(file, true);             } if (recurse) { foreach (string directory in Directory.GetDirectories(path)) {                     this.UploadDirectory(directory, recurse, mask);                 } }   this.ChangeDir(".."); }   /// <summary> /// Delete a file from the remote FTP server. /// </summary> /// <param name="fileName"></param> public void DeleteFile(string fileName) {             if (!this.loggedin) this.Login();               this.sendCommand("DELE " + fileName);               if (this.resultCode != 250) throw new FtpException(this.result.Substring(4));               Debug.WriteLine("Deleted file " + fileName, "FtpClient");         }   /// <summary> /// Rename a file on the remote FTP server. /// </summary> /// <param name="oldFileName"></param> /// <param name="newFileName"></param> /// <param name="overwrite">setting to false will throw exception if it exists</param> public void RenameFile(string oldFileName, string newFileName, bool overwrite) {             if (!this.loggedin) this.Login();               this.sendCommand("RNFR " + oldFileName);               if (this.resultCode != 350) throw new FtpException(this.result.Substring(4));               if (!overwrite && this.GetFileList(newFileName).Length > 0) throw new FtpException("File already exists");               this.sendCommand("RNTO " + newFileName);               if (this.resultCode != 250) throw new FtpException(this.result.Substring(4));               Debug.WriteLine("Renamed file " + oldFileName + " to " + newFileName, "FtpClient");         }   /// <summary> /// Create a directory on the remote FTP server. /// </summary> /// <param name="dirName"></param> public void MakeDir(string dirName) {             if (!this.loggedin) this.Login();               this.sendCommand("MKD " + dirName);               if (this.resultCode != 250 && this.resultCode != 257) throw new FtpException(this.result.Substring(4));               Debug.WriteLine("Created directory " + dirName, "FtpClient");         }   /// <summary> /// Delete a directory on the remote FTP server. /// </summary> /// <param name="dirName"></param> public void RemoveDir(string dirName) {             if (!this.loggedin) this.Login();               this.sendCommand("RMD " + dirName);               if (this.resultCode != 250) throw new FtpException(this.result.Substring(4));               Debug.WriteLine("Removed directory " + dirName, "FtpClient");         }   /// <summary> /// Change the current working directory on the remote FTP server. /// </summary> /// <param name="dirName"></param> public void ChangeDir(string dirName) { if (dirName == null || dirName.Equals(".") || dirName.Length == 0) {                 return;             }   if (!this.loggedin) this.Login();   this.sendCommand("CWD " + dirName);   if (this.resultCode != 250) throw new FtpException(result.Substring(4));   this.sendCommand("PWD");   if (this.resultCode != 257) throw new FtpException(result.Substring(4));   // gonna have to do better than this.... this.remotePath = this.message.Split('"')[1];   Debug.WriteLine("Current directory is " + this.remotePath, "FtpClient"); }   /// <summary> /// /// </summary> private void readResponse() {             this.message = "";             this.result = this.readLine();               if (this.result.Length > 3)                 this.resultCode = int.Parse(this.result.Substring(0, 3));             else                 this.result = null;         }   /// <summary> /// /// </summary> /// <returns></returns> private string readLine() { while (true) { this.bytes = clientSocket.Receive(this.buffer, this.buffer.Length, 0); this.message += ASCII.GetString(this.buffer, 0, this.bytes);   if (this.bytes < this.buffer.Length) {                     break;                 } }   string[] msg = this.message.Split('\n');   if (this.message.Length > 2) this.message = msg[msg.Length - 2];   else this.message = msg[0];     if (this.message.Length > 4 && !this.message.Substring(3, 1).Equals(" ")) return this.readLine();   if (this.verboseDebugging) { for (int i = 0; i < msg.Length - 1; i++) {                     Debug.Write(msg[i], "FtpClient");                 } }   return message; }   /// <summary> /// /// </summary> /// <param name="command"></param> private void sendCommand(String command) {             if (this.verboseDebugging) Debug.WriteLine(command, "FtpClient");               Byte[] cmdBytes = Encoding.ASCII.GetBytes((command + "\r\n").ToCharArray());             clientSocket.Send(cmdBytes, cmdBytes.Length, 0);             this.readResponse();         }   /// <summary> /// when doing data transfers, we need to open another socket for it. /// </summary> /// <returns>Connected socket</returns> private Socket createDataSocket() { this.sendCommand("PASV");   if (this.resultCode != 227) throw new FtpException(this.result.Substring(4));   int index1 = this.result.IndexOf('('); int index2 = this.result.IndexOf(')');   string ipData = this.result.Substring(index1 + 1, index2 - index1 - 1);   int[] parts = new int[6];   int len = ipData.Length; int partCount = 0; string buf = "";   for (int i = 0; i < len && partCount <= 6; i++) { char ch = char.Parse(ipData.Substring(i, 1));   if (char.IsDigit(ch)) buf += ch;   else if (ch != ',') throw new FtpException("Malformed PASV result: " + result);   if (ch == ',' || i + 1 == len) { try {                         parts[partCount++] = int.Parse(buf);                         buf = "";                     } catch (Exception ex) {                         throw new FtpException("Malformed PASV result (not supported?): " + this.result, ex);                     } } }   string ipAddress = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3];   int port = (parts[4] << 8) + parts[5];   Socket socket = null; IPEndPoint ep = null;   try {                 socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);                 ep = new IPEndPoint(Dns.Resolve(ipAddress).AddressList[0], port);                 socket.Connect(ep);             } catch (Exception ex) {                 // doubtfull....                 if (socket != null && socket.Connected) socket.Close();                   throw new FtpException("Can't connect to remote server", ex);             }   return socket; }   /// <summary> /// Always release those sockets. /// </summary> private void cleanup() { if (this.clientSocket != null) {                 this.clientSocket.Close();                 this.clientSocket = null;             } this.loggedin = false; } .... }

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http://www.codeproject.com/KB/IP/ftplibrary.aspx



elle est un peu bugger parait il, mais l'upload fonctionne bien...

Citation:

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Envoyé par alavoler

si je met

Code:

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request.Proxy = null;

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j'ai une erreur...


L'URI demandée n'est pas valide pour cette commande FTP.

normal... pour sortir vers l'exterieur je dois forcement utiliser le proxy... gniarf

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T'es sûr que le problème ne vient pas de l'url avec laquelle tu as instancié ton FtpWebRequest ? Genre y a pas le nom du fichier dans l'url ?

arf de toute facon WebRequestMethods.Ftp.GetDateTimestamp, ne donne pas l'heure courante du serveur... mais l'heure de la derniere modif d'un des fichiers... enfin je crois :/

Citation:

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Envoyé par Nikko95

T'es sûr que le problème ne vient pas de l'url avec laquelle tu as instancié ton FtpWebRequest ? Genre y a pas le nom du fichier dans l'url ?

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hum.... j'ai essayé sous la forme ftp://user:pass@url.com


la j'ai du changer le code pour utiliser le credential... jvais voir si ca change quelque chose mais je crois pas :)

ca me fait la meme chose

voila le code:

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FtpWebRequest request = ExecuteConnection(url, user, pass, WebRequestMethods.Ftp.UploadFile);     StreamReader sourceStream = new StreamReader(filePath); byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd()); sourceStream.Close(); request.ContentLength = fileContents.Length;   request.EnableSsl = false; Stream requestStream = request.GetRequestStream(); requestStream.Write(fileContents, 0, fileContents.Length); requestStream.Close();       private static FtpWebRequest ExecuteConnection(string url, string user, string pass, string requestMethod) { FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://" + url); request.Credentials = new NetworkCredential(user, pass);   request.Proxy = null; request.UseBinary = true;   request.Method = requestMethod; return request; }

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de plus c'est marqué dans la msdn qu'on ne peut pas utiliser l'upload à travers un proxy (va savoir pourquoi...), et en mettant le proxy à null, c est normal que je ne puisse sortir à l'exterieur...

A mon avis l'url est fausse. Ca devrait être
ftp://url.com/lenomdufichier.

Si j'étais toi, je m'installerais un petit serveur FTP sur mon poste, histoire de faire des test en local (si ça marche tjs pas ce n'est pas un probleme de proxy mais de code)

Nikko95

en effet j'avais oublié de mettre l'url avec le nom du fichier !!


je ne m'en suis pas tout de suite rendu compte car j'avais un autre souci qui caché aussi ce probleme


je te remerci !


j'ai un autre souci maintenant.... visiblement quand j'enregistre sur le server le fichier je l'enregistre mal... le programmme qui est chargé de le traiter ne le fait pas !

j'ouvre un autre post
et je met resolu pour celui ci

Salut,

Il suffit de désactiver le proxy par défaut pour corriger l'erreur

Code:

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<system.net> <defaultProxy enabled="false" useDefaultCredentials="true"/> </system.net>

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Et le login/password peuvent être passés par la propriété Credentials