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POBoost.Asio deadline_timer not working as expected
primarykey
Id
9916769
data
AcceptedAnswerId
9917661
AnswerCount
2
ClosedDate
CommentCount
10
CommunityOwnedDate
CreationDate
2012-03-28T22:46:02.810
FavoriteCount
0
LastActivityDate
2012-04-01T15:05:15.297
LastEditDate
2012-04-01T15:05:15.297
LastEditorUserId
283302
OwnerUserId
669642
ParentId
0
PostTypeId
1
Score
1
ViewCount
3020
LastEditorDisplayName
text
Body
I'm trying to implement a timeout for a Boost.Asio read on a TCP socket. I am trying to use a <code>async_read_some</code> with a <code>deadline_timer</code>. My function below is a member of a class that holds a smart pointer to the TCP socket and <code>io_service</code>. What I would expect to happen when called on an active socket that doesn't return any data is wait 2 seconds and return false. What happens is: If the socket never returns any data it works as expected. How ever if the server returns the data the proceeding calls to the method below return immediately because to timers callback is called without waiting the two seconds. I tried commenting out the <code>async_read_some</code> call and the function always works as expected. Why would <code>async_read_some</code> change how the timer works? <pre><code> client::client() { // Init socket and timer pSock = boost::shared_ptr<tcp::socket > (new tcp::socket(io_service)); } bool client::getData() { // Reset io_service io_service.reset(); // Init read timer boost::asio::deadline_timer timer(pSock->io_service()); timer.expires_from_now(boost::posix_time::seconds(2)); timer.async_wait(boost::bind(&client::read_timeout, this, boost::system::error_code(), true)); // // Async read the data pSock->async_read_some(boost::asio::buffer(buffer_), boost::bind(&client::read_complete, this, boost::asio::placeholders::error, boost::asio::placeholders::bytes_transferred )); // While io_service runs check read result while (pSock->io_service().run_one()) { if (m_read_result > 0) { // Read success return m_read_result; }else if(m_read_result < 0){ return false; } } } } void client::read_complete(const boost::system::error_code& error, size_t bytes_transferred) { if (!error) { m_read_result = bytes_transferred; }else{ m_read_result = -1; } } void client::read_timeout(const boost::system::error_code& error, bool timeout) { if(!error){ m_read_result = -1; } } </code></pre>
Tags
<c++><boost><boost-asio>
Title
Boost.Asio deadline_timer not working as expected
singulars
PostAcceptedAnswerId
1. PO
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USSam Miller
UserOwnerUserId
1. USAdam Magaluk
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1. PO
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2. PO
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1. VO
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