Java-commons-httpclient timeout settings setconnectiontimeout and setsotimeout

Problem

Request data before using HttpClient

Source Method:

     Public StaticString dohttp (httpmethod result,intTimeout, String charset) {HttpClient Client=NewHttpClient (); Try{httpconnectionmanagerparams Managerparams=Client.gethttpconnectionmanager (). Getparams ();            Managerparams.setconnectiontimeout (timeout);            Client.executemethod (result); InputStream Resstream=Result.getresponsebodyasstream (); BufferedReader BR=NewBufferedReader (NewInputStreamReader (Resstream, CharSet)); StringBuffer Resbuffer=NewStringBuffer (); String restemp= "";  while((Restemp = Br.readline ())! =NULL) {resbuffer.append (restemp); }            returnresbuffer.tostring (); } Catch(HttpException e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); } Catch(Exception e) {e.printstacktrace (); } finally{result.releaseconnection (); }        return NULL; }

Found one in

Client.executemethod (result);

A card will not come out here, the reason lies in the

Managerparams.setconnectiontimeout (timeout); // Timeout for connection

The connection timeout is used here, and I am missing a data timeout here, otherwise it will wait until the data is returned so that the request data timeout code is added below.

The following is the complete code: (where the red part is the protagonist)

     Public StaticString dohttp (httpmethod result,intTimeout, String charset) {HttpClient Client=NewHttpClient (); Try{httpconnectionmanagerparams Managerparams=Client.gethttpconnectionmanager (). Getparams ();            Managerparams.setconnectiontimeout (timeout); managerparams.setsotimeout (timeout); //wait for result timeoutClient.executemethod (Result); InputStream Resstream=Result.getresponsebodyasstream (); BufferedReader BR=NewBufferedReader (NewInputStreamReader (Resstream, CharSet)); StringBuffer Resbuffer=NewStringBuffer (); String restemp= "";  while((Restemp = Br.readline ())! =NULL) {resbuffer.append (restemp); }            returnresbuffer.tostring (); } Catch(HttpException e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); } Catch(Exception e) {e.printstacktrace (); } finally{result.releaseconnection (); }        return NULL; }

See Introduction

This article describes the http://jinnianshilongnian.iteye.com/blog/2089792 from

Parameter settings 1, httpclient 4.2.3

Httpparams params =Newbasichttpparams ();//Setting the connection time-out periodInteger connection_timeout = 2 * 1000;//Set Request Timeout 2 seconds based on business tuningInteger so_timeout = 2 * 1000;//set the wait data time-out time to 2 seconds based on business tuning//defines the millisecond time-out period used when retrieving managedclientconnection instances from Clientconnectionmanager//This parameter expects to get a value of type Java.lang.Long. If this parameter is not set, the default equals Connection_timeout, so be sure to setLong conn_manager_timeout = 500L;//the value is to wait for timeout when the connection is not enough, be sure to set it, and not too big ()Params.setintparameter (coreconnectionpnames.connection_timeout, Connection_timeout);p Arams.setintparameter ( Coreconnectionpnames.so_timeout, So_timeout);p arams.setlongparameter (Clientpnames.conn_manager_timeout, CONN_ Manager_timeout);//test whether a connection is available before submitting a requestParams.setbooleanparameter (Coreconnectionpnames.stale_connection_check,true); Poolingclientconnectionmanager Conmgr=NewPoolingclientconnectionmanager (); Conmgr.setmaxtotal (200);//set the total connection pool maximum number of connections depending on your scenario//is the default maximum connection for a route (the value defaults to 2), and the limit quantity actually used Defaultmaxperroute is not maxtotal. //set too small to support large concurrency (connectionpooltimeoutexception:timeout waiting for connection from pool), routing is a subdivision of Maxtotal. Conmgr.setdefaultmaxperroute (Conmgr.getmaxtotal ());//(there is currently only one route, so let him be equal to the maximum value)//In addition, set the number of retries of the HTTP client, which is 3 by default, and is currently disabled (this is the default if the project volume is not available)Httpclient.sethttprequestretryhandler (NewDefaulthttprequestretryhandler (0,false));

the differences between Maxttotal and Defaultmaxperroute are explained here:

1, Maxttotal is the size of the whole pond; 2, Defaultmaxperroute is a subdivision of Maxtotal according to the host connected to; For example: maxttotal=400 defaultmaxperroute= 200 while I am only connected to http://xx.com, the concurrency to this host is only 200, not 400; and I connect to http://xx.com and http://  xxx.com, the maximum concurrency for each host is only 200, which adds up to 400 (but not more than 400); So the setting that works is Defaultmaxperroute. 2, HttpClient 3.1

Httpconnectionmanagerparams params =Newhttpconnectionmanagerparams ();p arams.setconnectiontimeout (2000);p Arams.setsotimeout (2000);//Maximum number of connectionsParams.setmaxtotalconnections (500);p Arams.setdefaultmaxconnectionsperhost (500);p arams.setstalecheckingenabled (true); Connectionmanager.setparams (params); Httpclientparams Httpclientparams=Newhttpclientparams ();//Setting the connection timeout for httpclient, connection timeout set for Connection Manager is uselessHttpclientparams.setconnectionmanagertimeout (5000);//equivalent to the conn_manager_timeout in 4.2.3HttpClient =NewHttpClient (ConnectionManager); Httpclient.setparams (httpclientparams);//In addition, set the number of retries of the HTTP client, which is 3 by default, and is currently disabled (this is the default if the project volume is not available)Httpclientparams.setparameter (Httpmethodparams.retry_handler,NewDefaulthttpmethodretryhandler (0,false)); 

the parameters are similar and are not explained much;

Another look at the content of the reprint

HttpClient 4 and HttpClient 3 set timeout

HttpClient 4:
Connection timeout:

Httpclient.getparams (). Setparameter (coreconnectionpnames.connection_timeout,60000);

Or

Httpconnectionparams.setconnectiontimeout (params, 6000);

Read timeout:

Httpclient.getparams (). Setparameter (coreconnectionpnames.so_timeout,60000);

Or

Httpconnectionparams.setsotimeout (params, 60000);

HttpClient 3:
Connection timeout:

Httpclient.gethttpconnectionmanager (). Getparams (). Setconnectiontimeout (60000);

Read timeout:

Httpclient.gethttpconnectionmanager (). Getparams (). Setsotimeout (60000);

Java-commons-httpclient timeout settings setconnectiontimeout and setsotimeout