Node.js：服务器等待响应和超时

Question

如何将此GET请求改进为iSpeech，以便在发出请求时，服务器在iSpeech需要一些时间返回时不超时。

app.get("/", function(req, res) { 
    var url; 
    if (req.param("url")) { 
     url = unescape(req.param("url")); 
     return request({ 
     uri: url, 
     encoding: "binary" 
     }, function(error, response, body) { 
     var audio, format; 
     if (!error && response.statusCode === 200) { 
      format = response.headers["content-type"]; 
      audio = new Buffer(body.toString(), "binary"); 
      return request.post({ 
      headers: { 
       "content-type": format 
      }, 
      url: ispeech_server, 
      body: audio 
      }, function(error, response, body) { 
      var parse; 
      if (!error && response.statusCode === 200) { 
       parse = querystring.parse(body); 
       return res.send(parse, { 
       "Content-Type": "application/json" 
       }, 500); 
      } else { 
       return res.send("Error - iSpeech API returned an error", { 
       "Content-Type": "text/plain" 
       }, 500); 
      } 
      }); 
     } else { 
      return res.send("Invalid URL - File Not Found", { 
      "Content-Type": "text/plain" 
      }, 404); 
     } 
     }); 
    } else { 
     return res.send("Invalid URL - File Not Set", { 
     "Content-Type": "text/plain" 
     }, 404); 
    } 
    }); 

Answer 1

使用.timeOut()函数。