Exemple #1
0
        /// <summary>
        /// Submit a parameterized HTTP request by either GET or POST. The
        /// caller can ask for the response either as a string or as a stream.
        /// </summary>
        /// <remarks>
        /// If getResponse = false, the responseStream can be used by the caller
        /// to read the response. The caller must call Close() when done with the stream.
        /// If getResponse = true, the stream will be null, and Close() should not be called.
        /// </remarks>
        /// <param name="url">The URL to request</param>
        /// <param name="doPost">POST if true, GET if false.</param>
        /// <param name="requestParameters">A set of parameter/value pairs, in unencoded form.</param>
        /// <returns>Response from Web.</returns>
        public WebAccessorResponse SubmitHttpRequest(
            Uri url,
            bool doPost,
            Dictionary <string, string> requestParameters)
        {
            WebAccessorResponse webAccessorResponse = new WebAccessorResponse();

            try
            {
                WebRequest request     = null;
                string     queryString = BuildQueryString(requestParameters);

                if (doPost)
                {
                    ASCIIEncoding encoding  = new ASCIIEncoding();
                    byte[]        postBytes = encoding.GetBytes(queryString);
                    request = CreatePostRequest(url, CredentialCache.DefaultCredentials, postBytes.Length);
                    Stream requestStream = request.GetRequestStream();
                    requestStream.Write(postBytes, 0, postBytes.Length);
                    requestStream.Close();
                }
                else
                {
                    request = CreateGetRequest(url, queryString, CredentialCache.DefaultCredentials);
                }

                Close();    // get rid of any old response
                webResponse = (HttpWebResponse)request.GetResponse();
                webAccessorResponse.StatusDescription = webResponse.StatusDescription;
                if (webAccessorResponse.StatusDescription == "OK")
                {
                    Stream s = webResponse.GetResponseStream();

                    using (StreamReader reader = new StreamReader(s))
                    {
                        webAccessorResponse.ResponseString = reader.ReadToEnd();
                    }

                    Close();
                    webAccessorResponse.IsSuccessful = true;
                    return(webAccessorResponse);
                }

                webAccessorResponse.IsSuccessful = false;
                return(webAccessorResponse);
            }
            catch (WebException we)
            {
                HttpWebResponse response = (HttpWebResponse)we.Response;
                if (response == null)
                {
                    webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                          "{0}{1}",
                                                                          webAccessorResponse.StatusDescription,
                                                                          we.Message);
                    if (we.InnerException != null)
                    {
                        webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                              "{0}\n{1}",
                                                                              webAccessorResponse.StatusDescription,
                                                                              we.InnerException.Message);
                    }
                }
                else
                {
                    webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                          "{0}WebException: {1}",
                                                                          webAccessorResponse.StatusDescription,
                                                                          response.StatusDescription);
                }
            }
            catch (Exception ex)
            {
                webAccessorResponse.StatusDescription = ex.Message;
                if (ex.InnerException != null)
                {
                    webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                          "{0}\n{1}",
                                                                          webAccessorResponse.StatusDescription,
                                                                          ex.InnerException.Message);
                }
            }

            webAccessorResponse.IsSuccessful = false;
            return(webAccessorResponse);
        }
Exemple #2
0
        /// <summary>
        /// Submit a parameterized HTTP request by either GET or POST. The
        /// caller can ask for the response either as a string or as a stream.
        /// </summary>
        /// <remarks>
        /// If getResponse = false, the responseStream can be used by the caller
        /// to read the response. The caller must call Close() when done with the stream.
        /// If getResponse = true, the stream will be null, and Close() should not be called.
        /// </remarks>
        /// <param name="url">The URL to request</param>
        /// <param name="doPost">POST if true, GET if false.</param>
        /// <param name="requestParameters">A set of parameter/value pairs, in unencoded form.</param>
        /// <returns>Response from Web.</returns>
        public WebAccessorResponse SubmitHttpRequest(
            Uri url,
            bool doPost,
            Dictionary <string, string> requestParameters)
        {
            WebAccessorResponse webAccessorResponse = new WebAccessorResponse();

            try
            {
                ASCIIEncoding encoding   = new ASCIIEncoding();
                StringBuilder paramBlock = new StringBuilder();
                string        separator  = string.Empty;
                foreach (KeyValuePair <string, string> kvp in requestParameters)
                {
                    paramBlock.Append(separator);
                    separator = "&";
                    paramBlock.Append(HttpUtility.UrlEncode(kvp.Key));
                    if (!string.IsNullOrEmpty(kvp.Value))
                    {
                        paramBlock.Append("=");
                        paramBlock.Append(HttpUtility.UrlEncode(kvp.Value));
                    }
                }

                WebRequest request;
                if (doPost)
                {
                    byte[] postBytes = encoding.GetBytes(paramBlock.ToString());
                    request               = WebRequest.Create(url);
                    request.Proxy         = _proxy;
                    request.Credentials   = CredentialCache.DefaultCredentials;
                    request.Method        = "POST";
                    request.ContentType   = "application/x-www-form-urlencoded";
                    request.ContentLength = postBytes.Length;
                    Stream requestStream = request.GetRequestStream();
                    requestStream.Write(postBytes, 0, postBytes.Length);
                    requestStream.Close();
                }
                else
                {
                    url = new Uri(string.Format(CultureInfo.InvariantCulture,
                                                "{0}?{1}",
                                                url.ToString(),
                                                paramBlock));

                    request             = WebRequest.Create(url);
                    request.Proxy       = _proxy;
                    request.Credentials = CredentialCache.DefaultCredentials;
                    request.Method      = "GET";
                }

                Close();    // get rid of any old response
                _webResponse = (HttpWebResponse)request.GetResponse();
                webAccessorResponse.StatusDescription = _webResponse.StatusDescription;
                if (webAccessorResponse.StatusDescription == "OK")
                {
                    using (Stream s = _webResponse.GetResponseStream())
                    {
                        using (StreamReader reader = new StreamReader(s))
                        {
                            webAccessorResponse.ResponseString = reader.ReadToEnd();
                        }
                    }
                    Close();
                    webAccessorResponse.IsSuccessful = true;
                    return(webAccessorResponse);
                }

                webAccessorResponse.IsSuccessful = false;
                return(webAccessorResponse);
            }
            catch (WebException we)
            {
                HttpWebResponse response = (HttpWebResponse)we.Response;
                if (response == null)
                {
                    webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                          "{0}{1}",
                                                                          webAccessorResponse.StatusDescription,
                                                                          we.Message);
                    if (we.InnerException != null)
                    {
                        webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                              "{0}\n{1}",
                                                                              webAccessorResponse.StatusDescription,
                                                                              we.InnerException.Message);
                    }
                }
                else
                {
                    webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                          "{0}WebException: {1}",
                                                                          webAccessorResponse.StatusDescription,
                                                                          response.StatusDescription);
                }
            }
            catch (Exception ex)
            {
                webAccessorResponse.StatusDescription = ex.Message;
                if (ex.InnerException != null)
                {
                    webAccessorResponse.StatusDescription = string.Format(CultureInfo.InvariantCulture,
                                                                          "{0}\n{1}",
                                                                          webAccessorResponse.StatusDescription,
                                                                          ex.InnerException.Message);
                }
            }

            webAccessorResponse.IsSuccessful = false;
            return(webAccessorResponse);
        }