{"id":10832,"date":"2025-05-21T14:59:49","date_gmt":"2025-05-21T21:59:06","guid":{"rendered":"https:\/\/www.serviceobjects.com\/docs\/?page_id=10832"},"modified":"2025-10-10T02:43:34","modified_gmt":"2025-10-10T09:43:34","slug":"av3-soap","status":"publish","type":"page","link":"https:\/\/www.serviceobjects.com\/docs\/dots-address-validation-us-3\/av3-code-snippets-and-sample-code\/av3-soap\/","title":{"rendered":"AV3 &#8211; SOAP"},"content":{"rendered":"\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>Address 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 AV3Service;\nusing System;\nusing System.Threading.Tasks;\n\nnamespace address_validation_us_3_dot_net.SOAP\n{\n    \/\/\/ &lt;summary>\n    \/\/\/ A simple wrapper class to call the AV3 GetBestMatches SOAP \n    \/\/\/ operation endpoint (with primary\/backup failover and an \u201cIsLive\u201d toggle).\n    \/\/\/ &lt;\/summary>\n    public class GetBestMatchesValidation\n    {\n        private const string LiveBaseUrl = \"https:\/\/sws.serviceobjects.com\/av3\/api.svc\/soap\";\n        private const string BackupBaseUrl = \"https:\/\/swsbackup.serviceobjects.com\/av3\/api.svc\/soap\";\n        private const string TrailBaseUrl = \"https:\/\/trial.serviceobjects.com\/av3\/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 URLs\/timeout\/IsLive.\n        \/\/\/ &lt;\/summary>\n        public GetBestMatchesValidation(bool IsLive)\n        {\n            \/\/ Read timeout (milliseconds) and IsLive flag\n            _timeoutMs = 10000;\n            _isLive = IsLive;\n\n            if (_isLive)\n            {\n                _primaryUrl = LiveBaseUrl;\n                _backupUrl = BackupBaseUrl;\n            }\n            else\n            {\n                _primaryUrl = TrailBaseUrl;\n                _backupUrl = TrailBaseUrl;\n            }\n\n            if (string.IsNullOrWhiteSpace(_primaryUrl))\n                throw new InvalidOperationException(\"Primary URL not set. Check endpoint configuration.\");\n\n            if (string.IsNullOrWhiteSpace(_backupUrl))\n                throw new InvalidOperationException(\"Backup URL not set. Check endpoint configuration.\");\n        }\n\n        \/\/\/ &lt;summary>\n        \/\/\/ Calls the GetBestMatches SOAP operation. If the primary endpoint returns null\n        \/\/\/ or a fatal Error.TypeCode == \"3\", this will fall back to the backup endpoint.\n        \/\/\/ &lt;\/summary>\n        \/\/\/ &lt;param name=\"businessName\">Business name (or empty if none)&lt;\/param>\n        \/\/\/ &lt;param name=\"address1\">Street address line\u202f1&lt;\/param>\n        \/\/\/ &lt;param name=\"address2\">Street address line\u202f2 (or empty)&lt;\/param>\n        \/\/\/ &lt;param name=\"city\">City&lt;\/param>\n        \/\/\/ &lt;param name=\"state\">State (2\u2011letter or full state name)&lt;\/param>\n        \/\/\/ &lt;param name=\"zip\">ZIP or ZIP+4&lt;\/param>\n        \/\/\/ &lt;param name=\"licenseKey\">Your ServiceObjects Address Validation US 3 license key&lt;\/param>\n        \/\/\/ &lt;returns>A BestMatchesResponse containing an array of Address objects (or an Error)&lt;\/returns>\n        \/\/\/ &lt;exception cref=\"Exception\">\n        \/\/\/ Thrown if both primary and backup endpoints fail.\n        \/\/\/ &lt;\/exception>\n        public async Task&lt;BestMatchesResponse> GetBestMatches(\n            string businessName,\n            string address1,\n            string address2,\n            string city,\n            string state,\n            string zip,\n            string licenseKey\n        )\n        {\n            AddressValidation3Client clientPrimary = null;\n            AddressValidation3Client clientBackup = null;\n\n            try\n            {\n                \/\/ 1) Attempt Primary\n                clientPrimary = new AddressValidation3Client();\n                clientPrimary.Endpoint.Address = new System.ServiceModel.EndpointAddress(_primaryUrl);\n                clientPrimary.InnerChannel.OperationTimeout = TimeSpan.FromMilliseconds(_timeoutMs);\n\n                BestMatchesResponse response = await clientPrimary.GetBestMatchesAsync(\n                    businessName,\n                    address1,\n                    address2,\n                    city,\n                    state,\n                    zip,\n                    licenseKey\n                ).ConfigureAwait(false);\n\n                \/\/ If the response is null, or if a \u201cfatal\u201d Error.TypeCode == \"3\" came back, force a fallback\n                if (response == null || (response.Error != null &amp;&amp; response.Error.TypeCode == \"3\"))\n                {\n                    throw new InvalidOperationException(\"Primary endpoint returned null or a fatal TypeCode=3 error for GetBestMatches.\");\n                }\n\n                return response;\n            }\n            catch (Exception primaryEx)\n            {\n                \/\/ 2) Primary failed (due to exception, null, or TypeCode=3). Try Backup.\n                try\n                {\n                    clientBackup = new AddressValidation3Client();\n                    clientBackup.Endpoint.Address = new System.ServiceModel.EndpointAddress(_backupUrl);\n                    clientBackup.InnerChannel.OperationTimeout = TimeSpan.FromMilliseconds(_timeoutMs);\n\n                    return await clientBackup.GetBestMatchesAsync(\n                        businessName,\n                        address1,\n                        address2,\n                        city,\n                        state,\n                        zip,\n                        licenseKey\n                    ).ConfigureAwait(false);\n                }\n                catch (Exception backupEx)\n                {\n                    \/\/ If backup also fails, wrap both exceptions\n                    throw new Exception(\n                        $\"Both primary and backup endpoints failed.\\n\" +\n                        $\"Primary error: {primaryEx.Message}\\n\" +\n                        $\"Backup error: {backupEx.Message}\"\n                    );\n                }\n                finally\n                {\n                    clientBackup?.Close();\n                }\n            }\n            finally\n            {\n                clientPrimary?.Close();\n            }\n        }\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>Address Validation US 3 Python Code Snippet<\/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\nclass GetBestMatchesValidation:\n    def __init__(self, license_key: str, is_live: bool, timeout_ms: int = 10000):\n        \"\"\"\n        license_key (str): Service Objects Address Validation US - 3 license key.\n        is_live (bool): whether to use live or trial endpoints.\n        timeout_ms (int): SOAP call timeout in milliseconds.\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\/AV3\/api.svc?wsdl\"\n            if is_live else\n            \"https:\/\/trial.serviceobjects.com\/AV3\/api.svc?wsdl\"\n        )\n        self._backup_wsdl = (\n            \"https:\/\/swsbackup.serviceobjects.com\/AV3\/api.svc?wsdl\"\n            if is_live else\n            \"https:\/\/trial.serviceobjects.com\/AV3\/api.svc?wsdl\"\n        )\n\n    def get_best_matches(self,\n                         business_name: str,\n                         address1: str,\n                         address2: str,\n                         city: str,\n                         state: str,\n                         postal_code: str) -> Object:\n        \"\"\"\n        Calls GetBestMatches on the primary endpoint; on None response,\n        WebFault, or Error.TypeCode == '3' falls back to the backup endpoint.\n        returns: the suds response object\n        raises RuntimeError: if both endpoints fail\n        \"\"\"\n        # Common kwargs for both calls\n        call_kwargs = dict(\n            BusinessName=business_name,\n            Address=address1,\n            Address2=address2,\n            City=city,\n            State=state,\n            PostalCode=postal_code,\n            LicenseKey=self.license_key\n        )\n\n        # Attempt primary\n        try:\n            client = Client(self._primary_wsdl, timeout=self._timeout_s)\n\n            # Override endpoint URL if needed:\n            response = client.service.GetBestMatches(**call_kwargs)\n\n            # If response is None or fatal error code, 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 fatal Error.TypeCode=3\")\n\n            return response\n\n        except (WebFault, ValueError, Exception) as primary_ex:\n            # Attempt backup\n            try:\n                client = Client(self._backup_wsdl, timeout=self._timeout_s)\n                response = client.service.GetBestMatches(**call_kwargs)\n                if response is None:\n                    raise ValueError(\"Backup returned no result\")\n                return response\n\n            except (WebFault, Exception) as backup_ex:\n                msg = (\n                    \"Both primary and backup endpoints failed.\\n\"\n                    f\"Primary error: {primary_ex}\\n\"\n                    f\"Backup error: {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>Address Validation 3 NodeJS Code Snippet<\/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 Address Validation (AV3) SOAP service's GetBestMatches endpoint,\n * retrieving validated and corrected address information for a parsed U.S. address with fallback to a backup endpoint for reliability in live mode.\n * &lt;\/summary>\n *\/\nclass GetBestMatchesSoap {\n    \/**\n     * &lt;summary>\n     * Initializes a new instance of the GetBestMatchesSoap class with the provided input parameters,\n     * setting up primary and backup WSDL URLs based on the live\/trial mode.\n     * &lt;\/summary>\n     * @param {string} BusinessName - Name of business associated with this address. Optional.\n     * @param {string} Address - Address line 1 of the address (e.g., \"123 Main Street\"). Required.\n     * @param {string} Address2 - Address line 2 of the address (e.g., \"Apt 4B\"). Optional.\n     * @param {string} City - The city of the address (e.g., \"New York\"). Optional, but required if PostalCode is not provided.\n     * @param {string} State - The state of the address (e.g., \"NY\"). Optional, but required if PostalCode is not provided.\n     * @param {string} PostalCode - The zip code of the address. Optional, but required if City and State are not provided.\n     * @param {string} LicenseKey - Your license key to use the service. Required.\n     * @param {boolean} isLive - Value to determine whether to use the live or trial servers. Defaults to true.\n     * @param {number} timeoutSeconds - Timeout, in seconds, for the call to the service. Defaults to 15.\n     * @throws {Error} Thrown if LicenseKey is empty or null.\n     *\/\n    constructor(BusinessName, Address, Address2, City, State, PostalCode, LicenseKey, isLive = true, timeoutSeconds = 15) {\n\n        this.args = {\n            BusinessName,\n            Address,\n            Address2,\n            City,\n            State,\n            PostalCode,\n            LicenseKey\n        };\n\n        this.isLive = isLive;\n        this.timeoutSeconds = timeoutSeconds;\n\n        this.LiveBaseUrl = 'https:\/\/sws.serviceobjects.com\/AV3\/api.svc?wsdl';\n        this.BackupBaseUrl = 'https:\/\/swsbackup.serviceobjects.com\/AV3\/api.svc?wsdl';\n        this.TrialBaseUrl = 'https:\/\/trial.serviceobjects.com\/AV3\/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 GetBestMatches 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     * @returns {Promise&lt;Object>} A promise that resolves to the raw SOAP response data containing validated address details or an error.\n     * @throws {Error} Thrown if both primary and backup calls fail, with detailed error messages.\n     *\/\n    async invokeAsync() {\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\n            return primaryResult;\n        } catch (primaryErr) {\n            try {\n                console.warn(\"Primary call failed, falling back to backup...\");\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 returning the raw SOAP response data.\n     * &lt;\/summary>\n     * @param {string} wsdlUrl - The WSDL URL of the SOAP service endpoint (primary or backup).\n     * @param {Object} args - The arguments to pass to the GetBestMatches method.\n     * @returns {Promise&lt;Object>} A promise that resolves to the raw SOAP response data.\n     * @throws {Error} Thrown if the SOAP client creation fails, the service call fails, or the response cannot be parsed.\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.GetBestMatches(args, (err, result) => {\n                    const response = result?.GetBestMatchesResult;\n                    try {\n                        if (!response) {\n                            return reject(new Error(\"SOAP response is empty or undefined.\"));\n                        }\n                        resolve(response);\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.TypeCode is not equal to '3'.\n     * &lt;\/summary>\n     * @param {Object} response - The raw response object to validate.\n     * @returns {boolean} True if the response is valid, false otherwise.\n     *\/\n    _isValid(response) {\n        return response &amp;&amp; (!response.Error || response.Error.TypeCode !== '3');\n    }\n}\n\nexport { GetBestMatchesSoap };<\/pre>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":21,"featured_media":0,"parent":10830,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-10832","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>AV3 - SOAP<\/title>\n<meta name=\"description\" content=\"C#PythonNodeJS Address Validation 3 C# Code Snippet \ufeffusing AV3Service; using System; using System.Threading.Tasks; namespace\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.serviceobjects.com\/docs\/dots-address-validation-us-3\/av3-code-snippets-and-sample-code\/av3-soap\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AV3 - SOAP\" \/>\n<meta property=\"og:description\" content=\"C#PythonNodeJS Address Validation 3 C# Code Snippet \ufeffusing AV3Service; 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