{"id":3497,"date":"2022-11-11T13:35:24","date_gmt":"2022-11-11T13:35:24","guid":{"rendered":"https:\/\/serviceobjects.wpaladdin.com\/?page_id=3497"},"modified":"2025-09-27T01:24:18","modified_gmt":"2025-09-27T08:24:18","slug":"ev3-soap","status":"publish","type":"page","link":"https:\/\/www.serviceobjects.com\/docs\/dots-email-validation-3\/ev3-code-snippets-and-sample-code\/ev3-soap\/","title":{"rendered":"EV3 &#8211; SOAP"},"content":{"rendered":"\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-create-block-tabs\"><ul class=\"tab-labels\" role=\"tablist\" aria-label=\"tabbed content\"><li class=\"tab-label active\" role=\"tab\" aria-selected=\"true\" aria-controls=\"C#\" tabindex=\"0\">C#<\/li><li class=\"tab-label\" role=\"tab\" aria-selected=\"false\" aria-controls=\"Python \" tabindex=\"0\">Python <\/li><li class=\"tab-label\" role=\"tab\" aria-selected=\"false\" aria-controls=\"NodeJS\" tabindex=\"0\">NodeJS<\/li><\/ul><div class=\"tab-content\">\n<div class=\"wp-block-create-block-tab tab-panel\" role=\"tabpanel\" tabindex=\"0\">\n<p><strong>Email Validation 3 C# Code Snippet<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"csharp\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\ufeffusing EV3Service;\nusing System.ServiceModel;\n\nnamespace email_validation_3_dot_net.SOAP\n{\n    \/\/\/ &lt;summary>\n    \/\/\/ Provides functionality to call the ServiceObjects Email Validation SOAP service's ValidateEmailAddress operation,\n    \/\/\/ validating an email address with options for corrections and timeout, with fallback to a backup endpoint for reliability.\n    \/\/\/ &lt;\/summary>\n    public class ValidateEmailAddressValidation\n    {\n        private const string LiveBaseUrl = \"https:\/\/sws.serviceobjects.com\/ev3\/api.svc\/soap\";\n        private const string BackupBaseUrl = \"https:\/\/swsbackup.serviceobjects.com\/ev3\/api.svc\/soap\";\n        private const string TrialBaseUrl = \"https:\/\/trial.serviceobjects.com\/ev3\/api.svc\/soap\";\n\n        private readonly string _primaryUrl;\n        private readonly string _backupUrl;\n        private readonly int _timeoutMs;\n        private readonly bool _isLive;\n\n        \/\/\/ &lt;summary>\n        \/\/\/ Initializes a new instance of the &lt;see cref=\"ValidateEmailAddress\"\/> class, configuring primary and backup URLs based on the environment.\n        \/\/\/ &lt;\/summary>\n        \/\/\/ &lt;param name=\"isLive\">Indicates whether to use live or trial endpoints.&lt;\/param>\n        \/\/\/ &lt;exception cref=\"InvalidOperationException\">Thrown if primary or backup URLs are not set.&lt;\/exception>\n        public ValidateEmailAddressValidation(bool isLive)\n        {\n            _timeoutMs = 10000;\n            _isLive = isLive;\n\n            _primaryUrl = isLive ? LiveBaseUrl : TrialBaseUrl;\n            _backupUrl = isLive ? BackupBaseUrl : TrialBaseUrl;\n\n            if (string.IsNullOrWhiteSpace(_primaryUrl))\n                throw new InvalidOperationException(\"Primary URL not set.\");\n            if (string.IsNullOrWhiteSpace(_backupUrl))\n                throw new InvalidOperationException(\"Backup URL not set.\");\n        }\n\n        \/\/\/ &lt;summary>\n        \/\/\/ Asynchronously calls the ServiceObjects Email Validation SOAP endpoint to validate an email address.\n        \/\/\/ Attempts the primary endpoint first and falls back to the backup endpoint if the primary call fails or returns a fatal error (Error.TypeCode == \"3\").\n        \/\/\/ Enforces a timeout to prevent hangs.\n        \/\/\/ &lt;\/summary>\n        \/\/\/ &lt;param name=\"emailAddress\">The email address to validate (e.g., \"example@domain.com\").&lt;\/param>\n        \/\/\/ &lt;param name=\"allowCorrections\">Whether to allow corrections to the email address (e.g., \"true\" or \"false\").&lt;\/param>\n        \/\/\/ &lt;param name=\"timeout\">The timeout duration for the validation request in milliseconds.&lt;\/param>\n        \/\/\/ &lt;param name=\"licenseKey\">The license key for accessing the service.&lt;\/param>\n        \/\/\/ &lt;returns>A &lt;see cref=\"Task{ValidateEmailResponse}\"\/> containing email validation details or an error.&lt;\/returns>\n        \/\/\/ &lt;exception cref=\"Exception\">Thrown if both primary and backup endpoints fail.&lt;\/exception>\n        public async Task&lt;ValidateEmailResponse> ValidateEmailAddress(string EmailAddress, string AllowCorrections, string Timeout, string LicenseKey)\n        {\n            EV3LibraryClient clientPrimary = null;\n            EV3LibraryClient clientBackup = null;\n\n            try\n            {\n                clientPrimary = new EV3LibraryClient();\n                clientPrimary.Endpoint.Address = new EndpointAddress(_primaryUrl);\n                clientPrimary.InnerChannel.OperationTimeout = TimeSpan.FromMilliseconds(_timeoutMs);\n\n                ValidateEmailResponse response = await clientPrimary.ValidateEmailAddressAsync(\n                    EmailAddress, AllowCorrections, Timeout, LicenseKey).ConfigureAwait(false);\n\n                if (_isLive &amp;&amp; !IsValid(response))\n                {\n                    throw new InvalidOperationException(\"Primary endpoint returned null or a fatal TypeCode=1 error for ValidateEmailAddress\");\n                }\n                return response;\n            }\n            catch (Exception primaryEx)\n            {\n                try\n                {\n                    clientBackup = new EV3LibraryClient();\n                    clientBackup.Endpoint.Address = new EndpointAddress(_backupUrl);\n                    clientBackup.InnerChannel.OperationTimeout = TimeSpan.FromMilliseconds(_timeoutMs);\n\n                    return await clientBackup.ValidateEmailAddressAsync(\n                        EmailAddress, \n                        AllowCorrections, \n                        Timeout, \n                        LicenseKey\n                    ).ConfigureAwait(false);\n                }\n                catch (Exception backupEx)\n                {\n                    throw new Exception(\n                        $\"Both primary and backup endpoints failed for ValidateEmailAddress.\\n\" +\n                        $\"Primary error: {primaryEx.Message}\\n\" +\n                        $\"Backup error: {backupEx.Message}\");\n                }\n                finally\n                {\n                    clientBackup?.Close();\n                }\n            }\n            finally\n            {\n                clientPrimary?.Close();\n            }\n        }\n        private static bool IsValid(ValidateEmailResponse response) => response?.Error == null || response.Error.TypeCode != \"3\";\n    }\n}<\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-create-block-tab tab-panel\" role=\"tabpanel\" tabindex=\"0\">\n<p><strong><strong><strong><strong><strong>Email Validation 3 Python Code Snippet<\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"python\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">from suds.client import Client\nfrom suds import WebFault\nfrom suds.sudsobject import Object\n\n\nclass ValidateEmailAddressSoap:\n    \n  def __init__(self, license_key: str, is_live: bool, timeout_ms: int = 30000):\n        \"\"\"\n        license_key: Service Objects EV3 license key.\n        is_live: Whether to use live or trial endpoints\n        timeout_ms: SOAP call timeout in milliseconds\n        \"\"\"\n        if not license_key:\n            raise ValueError(\"LicenseKey cannot be empty or null.\")\n\n        self._timeout_s = timeout_ms \/ 1000.0  \n        self._is_live = is_live\n        self.license_key = license_key\n\n        # WSDL URLs\n        self._primary_wsdl = (\n            'https:\/\/sws.serviceobjects.com\/ev3\/api.svc?wsdl'\n            if is_live else\n            'https:\/\/trial.serviceobjects.com\/ev3\/api.svc?wsdl'\n        )\n        self._backup_wsdl = (\n            'https:\/\/swsbackup.serviceobjects.com\/ev3\/api.svc?wsdl'\n            if is_live else\n            'https:\/\/trial.serviceobjects.com\/ev3\/api.svc?wsdl'\n        )\n\n  def validate_email_address(self, email_address: str, allow_corrections: str, timeout:str) -> Object:\n        \"\"\"\n        Call EV3 ValidateEmailAddress SOAP  API to retrieve the information.\n        \n        Parameters:\n            email_address: The email address to validate.\n            allow_corrections: \"true\" or \"false\" - whether the API can return a corrected email.\n            timeout: Timeout value in string format (passed to the service).\n\n        Returns:\n            suds.sudsobject.Object: SOAP response containing validation details or error.\n        \"\"\"\n\n        # Common kwargs for both calls\n        call_kwargs = dict(\n            EmailAddress=email_address,\n            AllowCorrections=allow_corrections,\n            Timeout=timeout,\n            LicenseKey=self.license_key,\n        )\n\n        # Attempt primary\n        try:\n            client = Client(self._primary_wsdl)\n\n             # Override endpoint URL if needed:\n            response = client.service.ValidateEmailAddress(**call_kwargs)\n\n            # If response invalid or Error.TypeCode == \"3\", trigger fallback\n            if response is None or (hasattr(response, \"Error\") and response.Error and response.Error.TypeCode == \"3\"):\n                raise ValueError(\"Primary returned no result or Error.TypeCode=3\")\n\n            return response\n\n        except (WebFault, ValueError, Exception) as primary_ex:\n            try:\n                client = Client(self._backup_wsdl)\n                response = client.service.ValidateEmailAddress(**call_kwargs)\n\n                if response is None:\n                    raise ValueError(\"Backup returned no result\")\n                return response\n            except (WebFault, Exception) as backup_ex:\n                msg = (\n                    \"Both primary and backup endpoints failed.\\n\"\n                    f\"Primary error: {str(primary_ex)}\\n\"\n                    f\"Backup error: {str(backup_ex)}\"\n                )\n                raise RuntimeError(msg)<\/pre>\n<\/div>\n\n\n\n<div class=\"wp-block-create-block-tab tab-panel\" role=\"tabpanel\" tabindex=\"0\">\n<p><strong><strong><strong><strong><strong>Email Validation 3 NodeJS<\/strong><\/strong><\/strong><\/strong><\/strong> <strong><strong><strong><strong><strong>Code Snippet<\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">import { soap } from \"strong-soap\";\n\n\/**\n * &lt;summary>\n * A class that provides functionality to call the ServiceObjects Email Validation 3 SOAP service's ValidateEmailAddress endpoint,\n * validating an email address with fallback to a backup endpoint for reliability in live mode.\n * &lt;\/summary>\n *\/\nclass ValidateEmailAddressSoap {\n    \/**\n     * &lt;summary>\n     * Initializes a new instance of the ValidateEmailAddressSoap class with the provided input parameters,\n     * setting up primary and backup WSDL URLs based on the live\/trial mode.\n     * &lt;\/summary>\n     * &lt;param name=\"emailAddress\" type=\"string\">The email address to validate.&lt;\/param>\n     * &lt;param name=\"licenseKey\" type=\"string\">Your license key to use the service.&lt;\/param>\n     * &lt;param name=\"isLive\" type=\"boolean\">Determines whether to use the live or trial service.&lt;\/param>\n     * &lt;param name=\"timeoutSeconds\" type=\"number\">Timeout, in seconds, for the call to the service.&lt;\/param>\n     * &lt;returns type=\"Promise&lt;EV3Response>\">A promise that resolves to an EV3Response object.&lt;\/returns>\n     * &lt;exception cref=\"Error\">Thrown if the license key is empty or null.&lt;\/exception>\n     *\/\n    constructor(emailAddress, allowCorrections, licenseKey, isLive, timeout, timeoutSeconds) {\n\n        this.args = {\n            EmailAddress: emailAddress,\n            AllowCorrections: allowCorrections,\n            Timeout: timeout,\n            LicenseKey: licenseKey\n        };\n\n        this.isLive = isLive;\n        this.timeoutSeconds = timeoutSeconds;\n\n        this.LiveBaseUrl = \"https:\/\/sws.serviceobjects.com\/ev3\/api.svc?wsdl\";\n        this.BackupBaseUrl = \"https:\/\/swsbackup.serviceobjects.com\/ev3\/api.svc?wsdl\";\n        this.TrialBaseUrl = \"https:\/\/trial.serviceobjects.com\/ev3\/api.svc?wsdl\";\n\n        this._primaryWsdl = this.isLive ? this.LiveBaseUrl : this.TrialBaseUrl;\n        this._backupWsdl = this.isLive ? this.BackupBaseUrl : this.TrialBaseUrl;\n    }\n\n    \/**\n     * &lt;summary>\n     * Asynchronously calls the ValidateEmailAddress SOAP endpoint, attempting the primary endpoint\n     * first and falling back to the backup if the response is invalid (Error.TypeCode == '3') in live mode\n     * or if the primary call fails.\n     * &lt;\/summary>\n     * &lt;returns type=\"Promise&lt;EV3Response>\">A promise that resolves to an EV3Response object containing email validation details or an error.&lt;\/returns>\n     * &lt;exception cref=\"Error\">Thrown if both primary and backup calls fail, with detailed error messages.&lt;\/exception>\n     *\/\n    async validateEmailAddress() {\n        try {\n            const primaryResult = await this._callSoap(this._primaryWsdl, this.args);\n\n            if (this.isLive &amp;&amp; !this._isValid(primaryResult)) {\n                console.warn(\"Primary returned Error.TypeCode == '3', falling back to backup...\");\n                const backupResult = await this._callSoap(this._backupWsdl, this.args);\n                return backupResult;\n            }\n            return primaryResult;\n        } catch (primaryErr) {\n            try {\n                const backupResult = await this._callSoap(this._backupWsdl, this.args);\n                return backupResult;\n            } catch (backupErr) {\n                throw new Error(`Both primary and backup calls failed:\\nPrimary: ${primaryErr.message}\\nBackup: ${backupErr.message}`);\n            }\n        }\n    }\n\n    \/**\n     * &lt;summary>\n     * Performs a SOAP service call to the specified WSDL URL with the given arguments,\n     * creating a client and processing the response into an EV3Response object.\n     * &lt;\/summary>\n     * &lt;param name=\"wsdlUrl\" type=\"string\">The WSDL URL of the SOAP service endpoint (primary or backup).&lt;\/param>\n     * &lt;param name=\"args\" type=\"Object\">The arguments to pass to the ValidateEmailAddress method.&lt;\/param>\n     * &lt;returns type=\"Promise&lt;EV3Response>\">A promise that resolves to an EV3Response object containing the SOAP response data.&lt;\/returns>\n     * &lt;exception cref=\"Error\">Thrown if the SOAP client creation fails, the service call fails, or the response cannot be parsed.&lt;\/exception>\n     *\/\n    _callSoap(wsdlUrl, args) {\n        return new Promise((resolve, reject) => {\n            soap.createClient(wsdlUrl, { timeout: this.timeoutSeconds * 1000 }, (err, client) => {\n                if (err) return reject(err);\n\n                client.ValidateEmailAddress(args, (err, result) => {\n                    if (err) return reject(err);\n                    const rawData = result.ValidateEmailAddressResult;\n                    try {\n                        if (!rawData) {\n                            return reject(new Error(\"SOAP response is empty or undefined.\"));\n                        }\n                        resolve(rawData);\n                    } catch (parseErr) {\n                        reject(new Error(`Failed to parse SOAP response: ${parseErr.message}`));\n                    }\n                });\n            });\n        });\n    }\n\n    \/**\n     * &lt;summary>\n     * Checks if a SOAP response is valid by verifying that it exists and either has no Error object\n     * or the Error.Number is not equal to '3'.\n     * &lt;\/summary>\n     * &lt;param name=\"response\" type=\"EV3Response\">The EV3Response object to validate.&lt;\/param>\n     * &lt;returns type=\"boolean\">True if the response is valid, false otherwise.&lt;\/returns>\n     *\/\n    _isValid(response) {\n        return response &amp;&amp; (!response.Error || response.Error.TypeCode !== '3');\n    }\n}\n\nexport { ValidateEmailAddressSoap };<\/pre>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:100px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"parent":3228,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3497","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>EV3 - SOAP<\/title>\n<meta name=\"description\" content=\"C#Python NodeJS Email Validation 3 C# Code Snippet \ufeffusing EV3Service; using System.ServiceModel; namespace email_validation_3_dot_net.SOAP { \/\/\/\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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