public async Task VerifyAsync(VerifyRequest request) { if (request == null) { throw new ArgumentNullException(nameof(request)); } var document = new HtmlDocument(); using (var client = HttpClientFactory.CreateFirefox(m_ServiceUri)) using (var getResponse = await client.GetAsync(m_ServiceUri)) document.LoadHtml(await getResponse.Content.ReadAsStringAsync()); var hiddenFields = document.DocumentNode .SelectNodes("//input[@type='hidden']"); var postValues = hiddenFields .Select(x => new { Key = x.GetAttributeValue("id", null), Value = x.GetAttributeValue("value", "") }) .Where(x => !string.IsNullOrEmpty(x.Key)) .GroupBy(x => x.Key) .ToDictionary(x => x.Key, x => HtmlEntity.DeEntitize(x.First().Value)); postValues["ctl00$ContentPlaceHolder1$txtContractAddress"] = request.ContractAddress; postValues["ctl00$ContentPlaceHolder1$txtContractName"] = request.Name; postValues["ctl00$ContentPlaceHolder1$ddlCompilerVersions"] = $"v{request.Compiler}"; postValues["ctl00$ContentPlaceHolder1$ddlOptimization"] = "1"; postValues["ctl00$ContentPlaceHolder1$txtSourceCode"] = request.Source; postValues["ctl00$ContentPlaceHolder1$txtConstructorArguements"] = HexHelper.ToHex(request.AbiEncodedConstructorArgs); //postValues["ctl00$ContentPlaceHolder1$txtRuns"] = "200"; for (var i = 1; i <= 5; i++) { postValues["ctl00$ContentPlaceHolder1$txtLibraryName" + i] = string.Empty; postValues["ctl00$ContentPlaceHolder1$txtLibraryAddress" + i] = "0x"; } postValues["ctl00$ContentPlaceHolder1$btnSubmit"] = "Verify And Publish"; postValues["ctl00$ContentPlaceHolder1$txtGithubGist"] = string.Empty; postValues["ctl00$ContentPlaceHolder1$hdnSelectedTab"] = "'bytecode'"; postValues["ctl00$ContentPlaceHolder1$libcounter"] = "1"; using (var client = HttpClientFactory.CreateFirefox(m_ServiceUri)) using (var postResponse = await client.PostAsync(m_ServiceUri, new FormUrlEncodedContent(postValues))) { postResponse.EnsureSuccessStatusCode(); document.LoadHtml(await postResponse.Content.ReadAsStringAsync()); } if (document.DocumentNode.SelectSingleNode( "//font[@color='green' and contains(.,'Successfully generated ByteCode and ABI')]") != null) { return; } var errorText = document.DocumentNode.SelectSingleNode( "//span[@id='ContentPlaceHolder1_lblErrorStatus']"); if (string.IsNullOrWhiteSpace(errorText?.InnerText)) { errorText = document.DocumentNode.SelectSingleNode( "//span[@id='ContentPlaceHolder1_lblResult']"); } throw new ContractVerificationException("Verification failed: " + errorText?.InnerText); }