Files
dygou_go/internal/client/client.go
T
2026-07-29 14:02:56 +08:00

706 lines
22 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
package client
import (
"encoding/json"
"errors"
"fmt"
"io"
"mime/multipart"
"net/http"
"strconv"
"strings"
"time"
"douyu_go/internal/activity"
"douyu_go/internal/constants"
"douyu_go/internal/logger"
"douyu_go/internal/trace"
"douyu_go/internal/types"
"douyu_go/internal/utils"
)
// DouyuClient 斗鱼接口客户端。
type DouyuClient struct {
HTTPClient *http.Client
Activity *activity.Activity
TimeAPIURL string
Trace *trace.Recorder
}
// New 创建斗鱼客户端。act 决定使用哪个活动的接口参数;
// timeAPIURL 为空时回退到 constants.DefaultTimeAPI(全局共享的服务端时间接口)。
func New(act *activity.Activity, timeAPIURL string, tr *trace.Recorder) *DouyuClient {
if act == nil {
act = activity.Default()
}
if timeAPIURL == "" {
timeAPIURL = constants.DefaultTimeAPI
}
if tr == nil {
tr = &trace.Recorder{}
}
return &DouyuClient{
Activity: act,
TimeAPIURL: timeAPIURL,
Trace: tr,
HTTPClient: &http.Client{
Timeout: 8 * time.Second,
Transport: &http.Transport{
MaxConnsPerHost: 120,
MaxIdleConns: 120,
MaxIdleConnsPerHost: 80,
IdleConnTimeout: 30 * time.Second,
},
},
}
}
// ServerTime 从商品详情接口读取 data.preExchange.currentTime。
func (c *DouyuClient) ServerTime() (time.Time, error) {
sample, err := c.ServerTimeSample()
return sample.EstimatedServerNow(), err
}
// ServerTimeSample 从斗鱼秒级 currentTime 估算毫秒级服务端时间。
func (c *DouyuClient) ServerTimeSample() (types.TimeSample, error) {
var lastErr error
for i := 0; i < 3; i++ {
sample, err := c.fetchServerTimeOnce()
if err == nil {
sample.Samples = 1
sample.Source = "single"
return sample, nil
}
lastErr = err
time.Sleep(100 * time.Millisecond)
}
now := time.Now()
return types.TimeSample{
ServerTime: now.UTC(),
LocalTime: now,
Offset: 0,
Source: "localFallback",
Fallback: true,
}, fmt.Errorf("服务端时间获取失败,已降级本地时间: %w", lastErr)
}
// CalibratedServerTimeSample 通过等待 currentTime 跳秒估算本地与斗鱼秒边界的偏移。
func (c *DouyuClient) CalibratedServerTimeSample(maxWait time.Duration) (types.TimeSample, error) {
first, err := c.ServerTimeSample()
if err != nil || maxWait <= 0 {
return first, err
}
deadline := time.Now().Add(maxWait)
prev := first
for time.Now().Before(deadline) {
time.Sleep(40 * time.Millisecond)
current, err := c.fetchServerTimeOnce()
if err != nil {
continue
}
if current.RawCurrentTime <= prev.RawCurrentTime {
prev = current
continue
}
sampleGap := current.LocalTime.Sub(prev.LocalTime)
localBoundary := prev.LocalTime.Add(sampleGap / 2)
serverBoundary := time.Unix(current.RawCurrentTime, 0).UTC()
offset := serverBoundary.Sub(localBoundary.UTC())
current.Offset = offset
current.ServerTime = current.EstimatedServerNow()
current.LocalTime = time.Now()
current.RTT += first.RTT
current.ErrorBound = sampleGap / 2
current.Samples = 2
current.Source = "boundary"
return current, nil
}
first.ServerTime = first.EstimatedServerNow()
return first, nil
}
// BestServerTimeCalibration 多次校准,选择误差范围最小、RTT更低的一次。
func (c *DouyuClient) BestServerTimeCalibration(rounds int, maxWait time.Duration) (types.TimeCalibration, error) {
if rounds <= 0 {
rounds = 1
}
var best types.TimeSample
var lastErr error
for i := 0; i < rounds; i++ {
sample, err := c.CalibratedServerTimeSample(maxWait)
if err != nil {
lastErr = err
}
if sample.LocalTime.IsZero() {
continue
}
sample.Samples = max(sample.Samples, 1)
if best.LocalTime.IsZero() || betterTimeSample(sample, best) {
best = sample
}
}
if best.LocalTime.IsZero() {
now := time.Now()
return types.TimeCalibration{
CreatedAt: now,
Source: "localFallback",
Fallback: true,
}, fmt.Errorf("斗鱼时间校准失败: %w", lastErr)
}
var calErr error
if lastErr != nil {
calErr = fmt.Errorf("斗鱼时间校准部分失败(已使用最优结果): %w", lastErr)
}
return types.TimeCalibration{
Offset: best.Offset,
ErrorBound: best.ErrorBound,
RTT: best.RTT,
Samples: rounds,
CreatedAt: time.Now(),
Source: best.Source,
Fallback: best.Fallback,
}, calErr
}
func betterTimeSample(candidate, current types.TimeSample) bool {
if candidate.ErrorBound != 0 && current.ErrorBound == 0 {
return true
}
if candidate.ErrorBound == 0 && current.ErrorBound != 0 {
return false
}
if candidate.ErrorBound != current.ErrorBound {
return candidate.ErrorBound < current.ErrorBound
}
return candidate.RTT < current.RTT
}
func (c *DouyuClient) fetchServerTimeOnce() (types.TimeSample, error) {
url := utils.AppendCacheBuster(c.TimeAPIURL)
var result struct {
types.APIResponse
Data struct {
PreExchange struct {
CurrentTime string `json:"currentTime"`
} `json:"preExchange"`
} `json:"data"`
}
start := time.Now()
if err := c.getJSON(url, "", "服务时间", &result); err != nil {
return types.TimeSample{}, err
}
end := time.Now()
ts, err := strconv.ParseInt(result.Data.PreExchange.CurrentTime, 10, 64)
if err != nil || ts <= 0 {
return types.TimeSample{}, fmt.Errorf("currentTime 无效: %q", result.Data.PreExchange.CurrentTime)
}
rtt := end.Sub(start)
estimatedLocal := start.Add(rtt / 2)
serverTime := time.Unix(ts, 0).Add(time.Duration(estimatedLocal.Nanosecond())).UTC()
return types.TimeSample{
ServerTime: serverTime,
LocalTime: estimatedLocal,
RTT: rtt,
Offset: serverTime.Sub(estimatedLocal.UTC()),
RawCurrentTime: ts,
}, nil
}
// Products 拉取商城商品列表。
func (c *DouyuClient) Products() ([]types.Product, error) {
var result struct {
types.APIResponse
Data struct {
List []types.Product `json:"list"`
} `json:"data"`
}
if err := c.getJSON(c.Activity.StoreHomeURL, "", "商品列表", &result); err != nil {
return nil, err
}
if result.Error != 0 {
return nil, fmt.Errorf("商品接口失败: %s", result.Msg)
}
return result.Data.List, nil
}
// Score 查询账号积分余额。不同活动的积分接口方法/路径不同:
// 和平手册用 POST /japi/oms/web/peace/credit/balance;
// 电竞手册用 GET /wgapi/ordnc/activity/peacematch/score/balance。
func (c *DouyuClient) Score(cookie string) (int, error) {
var result struct {
types.APIResponse
Data struct {
Balance int `json:"balance"`
} `json:"data"`
}
if c.Activity.ScoreMethod == "GET" {
if err := c.getJSON(c.Activity.ScoreURL, cookie, "积分余额", &result); err != nil {
return 0, err
}
} else {
req, err := http.NewRequest("POST", c.Activity.ScoreURL, strings.NewReader(`{}`))
if err != nil {
return 0, err
}
c.setJSONHeaders(req, cookie)
req.Header.Set("Referer", c.Activity.BaseURL+"/")
if _, err := c.doJSON(req, &result, "积分余额"); err != nil {
return 0, err
}
}
if result.Error != 0 {
return 0, fmt.Errorf("积分接口失败: %s", result.Msg)
}
return result.Data.Balance, nil
}
// GenerateCSRF 调用 generateCsrf,并从 Set-Cookie 中取 cvl_csrf_token。
func (c *DouyuClient) GenerateCSRF(cookie string) (string, error) {
req, err := http.NewRequest("POST", c.Activity.CSRFURL, nil)
if err != nil {
return "", err
}
c.setBrowserHeaders(req, cookie)
start := time.Now()
reqBody := c.Trace.RequestBody(req)
resp, err := c.HTTPClient.Do(req)
if err != nil {
c.Trace.Record("生成CSRF", req, 0, time.Since(start), reqBody, nil, err.Error(), 0, "")
logNetworkError("生成CSRF", req, time.Since(start), err)
return "", err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
c.Trace.RecordResponse("生成CSRF", req, resp, resp.StatusCode, time.Since(start), reqBody, nil, err.Error(), 0, "")
logNetworkError("生成CSRF", req, time.Since(start), err)
return "", err
}
if resp.StatusCode != http.StatusOK {
c.Trace.RecordResponse("生成CSRF", req, resp, resp.StatusCode, time.Since(start), reqBody, body, "", 0, "")
logNetworkHTTPError("生成CSRF", req, resp.StatusCode, time.Since(start), body)
return "", fmt.Errorf("CSRF HTTP %d: %s", resp.StatusCode, utils.TrimForLog(string(body), 120))
}
var api types.APIResponse
if err := json.Unmarshal(body, &api); err != nil {
c.Trace.RecordResponse("生成CSRF", req, resp, resp.StatusCode, time.Since(start), reqBody, body, err.Error(), 0, "")
logNetworkParseError("生成CSRF", req, time.Since(start), body, err)
return "", fmt.Errorf("CSRF 响应解析失败: %w", err)
}
traceErr := ""
if api.Error != 0 {
traceErr = api.Msg
c.Trace.RecordResponse("生成CSRF", req, resp, resp.StatusCode, time.Since(start), reqBody, body, traceErr, api.Error, api.Msg)
logNetworkAPIResult("生成CSRF", req, time.Since(start), api.Error, api.Msg)
return "", fmt.Errorf("CSRF 接口失败: %s", api.Msg)
}
for _, ck := range resp.Cookies() {
if ck.Name == "cvl_csrf_token" && ck.Value != "" {
c.Trace.RecordResponse("生成CSRF", req, resp, resp.StatusCode, time.Since(start), reqBody, body, "", api.Error, api.Msg)
logNetworkSuccess("生成CSRF", req, time.Since(start), 0, "")
// 电竞手册还需获取 acf_ccn 作为 ctn,组合返回 csrf\x00ctn
if c.Activity.UseCTN {
ctn, err := c.FetchCTN(utils.MergeCookie(cookie, "cvl_csrf_token", ck.Value))
if err != nil {
return "", fmt.Errorf("获取CTN失败: %w", err)
}
return ck.Value + "\x00" + ctn, nil
}
return ck.Value, nil
}
}
c.Trace.RecordResponse("生成CSRF", req, resp, resp.StatusCode, time.Since(start), reqBody, body, "响应没有 cvl_csrf_token", api.Error, api.Msg)
logger.LogEvent("网络", "warn", "接口返回异常: 生成CSRF %s %s 耗时=%s msg=响应没有 cvl_csrf_token",
req.Method, requestPath(req), utils.RoundDuration(time.Since(start)))
return "", errors.New("CSRF 响应没有 cvl_csrf_token")
}
// FetchCTN 调用 csrfNlApi/getCsrfCookie 获取 acf_ccn(电竞手册用 ctn 鉴权)。
func (c *DouyuClient) FetchCTN(cookie string) (string, error) {
req, err := http.NewRequest("GET", c.Activity.CTNURL, nil)
if err != nil {
return "", err
}
c.setBrowserHeaders(req, cookie)
start := time.Now()
reqBody := c.Trace.RequestBody(req)
resp, err := c.HTTPClient.Do(req)
if err != nil {
c.Trace.Record("获取CTN", req, 0, time.Since(start), reqBody, nil, err.Error(), 0, "")
return "", err
}
defer resp.Body.Close()
io.ReadAll(resp.Body) // 消费 body
for _, ck := range resp.Cookies() {
if ck.Name == "acf_ccn" && ck.Value != "" {
c.Trace.RecordResponse("获取CTN", req, resp, resp.StatusCode, time.Since(start), reqBody, nil, "", 0, "")
return ck.Value, nil
}
}
c.Trace.RecordResponse("获取CTN", req, resp, resp.StatusCode, time.Since(start), reqBody, nil, "响应没有 acf_ccn", 0, "")
return "", errors.New("CTN 响应没有 acf_ccn")
}
func csrfFromResponse(resp *http.Response) string {
if resp == nil {
return ""
}
for _, ck := range resp.Cookies() {
if ck.Name == "cvl_csrf_token" && ck.Value != "" {
return ck.Value
}
}
return ""
}
// BatchExchangeLimit 请求兑换限制接口。电竞手册不需要此步骤,直接跳过返回默认限制。
func (c *DouyuClient) BatchExchangeLimit(cookie, commodityID string, csrf *string) (int, error) {
if c.Activity.UseCTN {
return 1, nil
}
currentCSRF := ""
if csrf != nil {
currentCSRF = *csrf
}
var result struct {
types.APIResponse
Data struct {
Limit string `json:"limit"`
} `json:"data"`
}
if err := c.postMultipart(c.Activity.BatchLimitURL, cookie, csrf, "批量限制", map[string]string{
"manualID": c.Activity.ManualID,
"commodityID": commodityID,
"rid": c.Activity.RoomID,
"csrfToken": currentCSRF,
}, &result); err != nil {
return 0, err
}
if result.Error != 0 {
return 0, fmt.Errorf("批量限制接口失败: %s", result.Msg)
}
limit, err := strconv.Atoi(result.Data.Limit)
if err != nil {
return 0, fmt.Errorf("批量限制值无效: %q", result.Data.Limit)
}
return limit, nil
}
// PreExchange 按抓包流程执行预兑换检查。电竞手册不需要此步骤,直接跳过。
func (c *DouyuClient) PreExchange(cookie, commodityID string, csrf *string) error {
if c.Activity.UseCTN {
return nil
}
currentCSRF := ""
if csrf != nil {
currentCSRF = *csrf
}
var result types.APIResponse
if err := c.postMultipart(c.Activity.PreExchangeURL, cookie, csrf, "预兑换", map[string]string{
"manualID": c.Activity.ManualID,
"rid": c.Activity.RoomID,
"commodityID": commodityID,
"num": "1",
"csrfToken": currentCSRF,
}, &result); err != nil {
return err
}
if result.Error != 0 {
return fmt.Errorf("预兑换失败: %s", result.Msg)
}
return nil
}
// Exchange 正式兑换一个商品。
func (c *DouyuClient) Exchange(cookie, commodityID string, csrf *string) (string, error) {
var result struct {
types.APIResponse
Data struct {
ExchangeID int `json:"exchangeId"`
ExchangeNum string `json:"exchangeNum"`
CommodityTyp int `json:"commodityType"`
} `json:"data"`
}
if c.Activity.UseCTN {
// 电竞手册:用 ctn(acf_ccn) 鉴权,multipart 表单(与浏览器抓包一致)
ctn := ""
if csrf != nil {
parts := strings.SplitN(*csrf, "\x00", 2)
if len(parts) > 1 {
ctn = parts[1]
}
}
if ctn == "" {
// 缓存中没有 ctn,现场获取
ctnVal, err := c.FetchCTN(cookie)
if err != nil {
return "", fmt.Errorf("获取CTN失败: %w", err)
}
ctn = ctnVal
}
if err := c.postMultipart(c.Activity.ExchangeURL, cookie, csrf, "正式兑换", map[string]string{
"manualID": c.Activity.ManualID,
"commodityID": commodityID,
"num": "1",
"rid": c.Activity.RoomID,
"ctn": ctn,
}, &result); err != nil {
return "", err
}
} else {
// 精英手册:用 csrfToken 鉴权,multipart 表单
currentCSRF := ""
if csrf != nil {
currentCSRF = *csrf
}
if err := c.postMultipart(c.Activity.ExchangeURL, cookie, csrf, "正式兑换", map[string]string{
"manualID": c.Activity.ManualID,
"commodityID": commodityID,
"num": "1",
"rid": c.Activity.RoomID,
"csrfToken": currentCSRF,
}, &result); err != nil {
return "", err
}
}
if result.Error != 0 {
if strings.TrimSpace(result.Msg) == "" {
return "", errors.New("兑换失败,接口未返回原因")
}
return "", fmt.Errorf("兑换失败: %s", result.Msg)
}
return fmt.Sprintf("exchangeId=%d,num=%s", result.Data.ExchangeID, result.Data.ExchangeNum), nil
}
// RoleName 查询绑定角色名。
func (c *DouyuClient) RoleName(cookie string) (string, error) {
var result struct {
types.APIResponse
Data struct {
GameRole struct {
RoleName string `json:"roleName"`
} `json:"gameRole"`
} `json:"data"`
}
if err := c.getJSON(c.Activity.BindInfoURL, cookie, "角色绑定", &result); err != nil {
return "", err
}
if result.Error != 0 {
return "", fmt.Errorf("角色接口失败: %s", result.Msg)
}
return result.Data.GameRole.RoleName, nil
}
// ExchangeListResponse 兑换列表响应。
type ExchangeListResponse struct {
Error int `json:"error"`
Msg string `json:"msg"`
Data struct {
List []types.ExchangeRecord `json:"list"`
Count int `json:"count"`
} `json:"data"`
}
// APIStatus 返回斗鱼 API 的 error/msg 状态,实现 apiResponder 接口。
func (r ExchangeListResponse) APIStatus() (int, string, bool) {
return r.Error, r.Msg, true
}
// ExchangeList 查询兑换记录列表。
func (c *DouyuClient) ExchangeList(cookie string) ([]types.ExchangeRecord, error) {
var result ExchangeListResponse
if err := c.getJSON(c.Activity.ExchangeListURL, cookie, "兑换记录", &result); err != nil {
return nil, err
}
if result.Error != 0 {
return nil, fmt.Errorf("兑换记录查询失败: %s", result.Msg)
}
return result.Data.List, nil
}
func (c *DouyuClient) getJSON(url, cookie, label string, out any) error {
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return err
}
c.setBrowserHeaders(req, cookie)
_, err = c.doJSON(req, out, label)
return err
}
func (c *DouyuClient) postMultipart(url, cookie string, csrf *string, label string, fields map[string]string, out any) error {
var body strings.Builder
writer := multipart.NewWriter(&body)
for key, value := range fields {
if err := writer.WriteField(key, value); err != nil {
return err
}
}
if err := writer.Close(); err != nil {
return err
}
req, err := http.NewRequest("POST", url, strings.NewReader(body.String()))
if err != nil {
return err
}
// 处理组合 token:csrf\x00ctn(电竞手册用 ctn 鉴权时)
// 拆分后 cvl_csrf_token 和 acf_ccn 都合并到 Cookie 头
currentCSRF := ""
ctnVal := ""
if csrf != nil {
parts := strings.SplitN(*csrf, "\x00", 2)
currentCSRF = parts[0]
if len(parts) > 1 {
ctnVal = parts[1]
}
}
mergedCookie := utils.MergeCookie(cookie, "cvl_csrf_token", currentCSRF)
if ctnVal != "" {
mergedCookie = utils.MergeCookie(mergedCookie, "acf_ccn", ctnVal)
}
c.setBrowserHeaders(req, mergedCookie)
req.Header.Set("Content-Type", writer.FormDataContentType())
resp, err := c.doJSON(req, out, label)
if resp != nil {
if nextCSRF := csrfFromResponse(resp); nextCSRF != "" && csrf != nil {
if nextCSRF != *csrf {
logger.LogEvent("网络", "info", "响应刷新CSRF已同步: %s %s %s", label, req.Method, requestPath(req))
}
if ctnVal != "" {
*csrf = nextCSRF + "\x00" + ctnVal
} else {
*csrf = nextCSRF
}
}
}
return err
}
func (c *DouyuClient) doJSON(req *http.Request, out any, label string) (*http.Response, error) {
start := time.Now()
reqBody := c.Trace.RequestBody(req)
resp, err := c.HTTPClient.Do(req)
if err != nil {
c.Trace.Record(label, req, 0, time.Since(start), reqBody, nil, err.Error(), 0, "")
logNetworkError(label, req, time.Since(start), err)
return nil, err
}
defer resp.Body.Close()
body, err := io.ReadAll(resp.Body)
if err != nil {
c.Trace.RecordResponse(label, req, resp, resp.StatusCode, time.Since(start), reqBody, nil, err.Error(), 0, "")
logNetworkError(label, req, time.Since(start), err)
return resp, err
}
if resp.StatusCode != http.StatusOK {
c.Trace.RecordResponse(label, req, resp, resp.StatusCode, time.Since(start), reqBody, body, "", 0, "")
logNetworkHTTPError(label, req, resp.StatusCode, time.Since(start), body)
return resp, fmt.Errorf("HTTP %d: %s", resp.StatusCode, utils.TrimForLog(string(body), 160))
}
if err := json.Unmarshal(body, out); err != nil {
c.Trace.RecordResponse(label, req, resp, resp.StatusCode, time.Since(start), reqBody, body, err.Error(), 0, "")
logNetworkParseError(label, req, time.Since(start), body, err)
return resp, fmt.Errorf("JSON 解析失败: %w, body=%s", err, utils.TrimForLog(string(body), 160))
}
if apiError, apiMsg, ok := extractAPIStatus(out); ok && apiError != 0 {
c.Trace.RecordResponse(label, req, resp, resp.StatusCode, time.Since(start), reqBody, body, apiMsg, apiError, apiMsg)
logNetworkAPIResult(label, req, time.Since(start), apiError, apiMsg)
} else if shouldLogNetworkSuccess(label) {
c.Trace.RecordResponse(label, req, resp, resp.StatusCode, time.Since(start), reqBody, body, "", 0, "")
logNetworkSuccess(label, req, time.Since(start), 0, "")
} else {
c.Trace.RecordResponse(label, req, resp, resp.StatusCode, time.Since(start), reqBody, body, "", 0, "")
}
return resp, nil
}
func shouldLogNetworkSuccess(label string) bool {
return label != "服务时间"
}
func logNetworkSuccess(label string, req *http.Request, cost time.Duration, apiError int, apiMsg string) {
if !shouldLogNetworkSuccess(label) {
return
}
extra := ""
if apiMsg != "" || apiError != 0 {
extra = fmt.Sprintf(" apiError=%d msg=%s", apiError, utils.TrimForLog(apiMsg, 80))
}
logger.LogEvent("网络", "info", "请求完成: %s %s %s 耗时=%s%s", label, req.Method, requestPath(req), utils.RoundDuration(cost), extra)
}
func logNetworkAPIResult(label string, req *http.Request, cost time.Duration, apiError int, apiMsg string) {
logger.LogEvent("网络", "warn", "接口返回异常: %s %s %s 耗时=%s apiError=%d msg=%s",
label, req.Method, requestPath(req), utils.RoundDuration(cost), apiError, utils.TrimForLog(apiMsg, 120))
}
func logNetworkHTTPError(label string, req *http.Request, status int, cost time.Duration, body []byte) {
logger.LogEvent("网络", "error", "HTTP异常: %s %s %s 状态=%d 耗时=%s 响应=%s",
label, req.Method, requestPath(req), status, utils.RoundDuration(cost), utils.TrimForLog(string(body), 160))
}
func logNetworkParseError(label string, req *http.Request, cost time.Duration, body []byte, err error) {
logger.LogEvent("网络", "error", "响应解析失败: %s %s %s 耗时=%s 错误=%v 响应=%s",
label, req.Method, requestPath(req), utils.RoundDuration(cost), err, utils.TrimForLog(string(body), 160))
}
func logNetworkError(label string, req *http.Request, cost time.Duration, err error) {
logger.LogEvent("网络", "error", "请求失败: %s %s %s 耗时=%s 错误=%v",
label, req.Method, requestPath(req), utils.RoundDuration(cost), err)
}
func requestPath(req *http.Request) string {
if req == nil || req.URL == nil {
return "-"
}
return req.URL.Path
}
func extractAPIStatus(out any) (int, string, bool) {
if out == nil {
return 0, "", false
}
if r, ok := out.(apiResponder); ok {
return r.APIStatus()
}
return 0, "", false
}
// apiResponder 返回斗鱼 API 的 error/msg 状态。
// types.APIResponse 通过其方法满足该接口;
// 未嵌入 APIResponse 但自带 Error/Msg 字段的结构体(如 ExchangeListResponse)
// 通过实现 APIStatus 方法满足该接口,避免使用反射逐字段查找。
type apiResponder interface {
APIStatus() (int, string, bool)
}
func (c *DouyuClient) setBrowserHeaders(req *http.Request, cookie string) {
req.Header.Set("Accept", "application/json, text/plain, */*")
req.Header.Set("Accept-Language", "zh-CN,zh;q=0.9,en-US;q=0.6,en;q=0.5")
req.Header.Set("User-Agent", constants.UserAgent)
req.Header.Set("Origin", c.Activity.BaseURL)
req.Header.Set("Referer", c.Activity.ShopReferer)
req.Header.Set("Sec-Fetch-Dest", "empty")
req.Header.Set("Sec-Fetch-Mode", "cors")
req.Header.Set("Sec-Fetch-Site", "same-origin")
if strings.TrimSpace(cookie) != "" {
req.Header.Set("Cookie", cookie)
}
}
func (c *DouyuClient) setJSONHeaders(req *http.Request, cookie string) {
c.setBrowserHeaders(req, cookie)
req.Header.Set("Content-Type", "application/json")
}