feat: 记录流模式首字时间 (close #323)

relay/channel/perplexity/adaptor.go

@@ -46,7 +46,7 @@ func (a *Adaptor) DoRequest(c *gin.Context, info *relaycommon.RelayInfo, request
 func (a *Adaptor) DoResponse(c *gin.Context, resp *http.Response, info *relaycommon.RelayInfo) (usage *dto.Usage, err *dto.OpenAIErrorWithStatusCode) {
 	if info.IsStream {
 		var responseText string
-		err, responseText, _ = openai.OpenaiStreamHandler(c, resp, info.RelayMode)
+		err, responseText, _ = openai.OpenaiStreamHandler(c, resp, info)
 		usage, _ = service.ResponseText2Usage(responseText, info.UpstreamModelName, info.PromptTokens)
 	} else {
 		err, usage = openai.OpenaiHandler(c, resp, info.PromptTokens, info.UpstreamModelName)