一、即便是相同的短信簽名與短信正文模板,也須要針對「國內文本短信」與「海外文本短信」分別申請。開始不知道,覺得只要申請一次,給國外手機發短信時給api傳對應的國家碼就行,後來才發現須要分別申請。web
二、短信服務web api響應「手機號內容頻率限制」錯誤。這是因爲在30秒內向同一手機號屢次發送了相同內容的短信,這是騰訊雲短信服務的默認限制——「相同內容短信對同一個手機號,30秒內發送短信條數不超過1條」,能夠經過「應用配置」的「短信頻率配置」修改這個限制。api
三、騰訊雲短信服務沒有提供 .NET Core 的 SDK,咱們本身實現的代碼以下:app
public class TencentCloudSmsService : ISmsService { private static readonly HttpClient _httpClient = new HttpClient { BaseAddress = new Uri("https://yun.tim.qq.com") }; private readonly string _appId; private readonly string _appKey; private const string SIGNATURE = "..."; private const int DOMESTIC_TEMPLATE_ID = 1234; private const int OVERSEA_TEMPLATE_ID = 5678; private readonly ILogger _logger; public TencentCloudSmsService(IConfiguration conf, ILoggerFactory loggerFactory) { _appId = conf["tencentCloudSms:appId"]; if (string.IsNullOrEmpty(_appId)) throw new ArgumentException($"{nameof(_appId)} must have a value"); _appKey = conf["tencentCloudSms:appKey"]; if (string.IsNullOrEmpty(_appKey)) throw new ArgumentException($"{nameof(_appKey)} must have a value"); _logger = loggerFactory.CreateLogger<TencentCloudSmsService>(); } public async Task<bool> SendCode(string countryCode, long mobile, int code) { var random = GetRandom(); var timestamp = DateTimeOffset.Now.ToUnixTimeSeconds(); var data = new { tel = new { nationcode = countryCode.Replace("+", ""), mobile = mobile.ToString() }, sign = SIGNATURE, tpl_id = countryCode == "+86" ? DOMESTIC_TEMPLATE_ID : OVERSEA_TEMPLATE_ID , @params = new[] { code.ToString() }, sig = ComputeSignature(mobile, random, timestamp), time = timestamp, extend = "", ext = "" }; var url = $"/v5/tlssmssvr/sendsms?sdkappid={_appId}&random={random}"; _logger.LogDebug("Post to " + _httpClient.BaseAddress + url); var response = await _httpClient.PostAsJsonAsync<dynamic>(url, data); _logger.LogDebug("Post data:\n" + JsonConvert.SerializeObject(data)); response.EnsureSuccessStatusCode(); var result = await response.Content.ReadAsAsync<dynamic>(); if(result.result != 0) { _logger.LogError($"Failed to send message to {countryCode}-{mobile}: {result.errmsg}"); return false; } return true; } private string ComputeSignature(long mobile, int random, long timestamp) { var input = $"appkey={_appKey}&random={random}&time={timestamp}&mobile={mobile}"; var hasBytes = SHA256.Create().ComputeHash(Encoding.UTF8.GetBytes(input)); return string.Join("", hasBytes.Select(b => b.ToString("x2"))); } private int GetRandom() { return new Random().Next(100000, 999999); } }