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shrpx: Check return value of HttpsUpstream::resume_read() 

Currently, resume_read() fails if on_read() returns -1 in case that
evbuffer_add failed, which means, most likely, memory allocation
failure. ClientHandler is marked "should be closed", but if
evbuffer_add is failed, write callback will not be invoked and its
marking is not evaluated. It will eventually be deleted when the
client is disconnected or backend failure though.
This commit is contained in:
Tatsuhiro Tsujikawa 2013-02-09 17:03:03 +09:00
parent 99b687ceca
commit 4876412f7d
1 changed files with 13 additions and 4 deletions
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17
src/shrpx_https_upstream.cc
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@ -399,7 +399,9 @@ void https_downstream_readcb(bufferevent *bev, void *ptr)
} else {
upstream->delete_downstream();
// Process next HTTP request
upstream->resume_read(SHRPX_MSG_BLOCK, 0);
if(upstream->resume_read(SHRPX_MSG_BLOCK, 0) == -1) {
return;
}
}
}
} else {
@ -425,7 +427,9 @@ void https_downstream_readcb(bufferevent *bev, void *ptr)
if(downstream->get_request_state() == Downstream::MSG_COMPLETE) {
upstream->delete_downstream();
// Process next HTTP request
upstream->resume_read(SHRPX_MSG_BLOCK, 0);
if(upstream->resume_read(SHRPX_MSG_BLOCK, 0) == -1) {
return;
}
}
}
}
@ -442,6 +446,7 @@ void https_downstream_writecb(bufferevent *bev, void *ptr)
Downstream *downstream = dconn->get_downstream();
HttpsUpstream *upstream;
upstream = static_cast<HttpsUpstream*>(downstream->get_upstream());
// May return -1
upstream->resume_read(SHRPX_NO_BUFFER, downstream);
}
} // namespace
@ -493,7 +498,9 @@ void https_downstream_eventcb(bufferevent *bev, short events, void *ptr)
}
if(downstream->get_request_state() == Downstream::MSG_COMPLETE) {
upstream->delete_downstream();
upstream->resume_read(SHRPX_MSG_BLOCK, 0);
if(upstream->resume_read(SHRPX_MSG_BLOCK, 0) == -1) {
return;
}
}
} else if(events & (BEV_EVENT_ERROR | BEV_EVENT_TIMEOUT)) {
if(LOG_ENABLED(INFO)) {
@ -517,7 +524,9 @@ void https_downstream_eventcb(bufferevent *bev, short events, void *ptr)
}
if(downstream->get_request_state() == Downstream::MSG_COMPLETE) {
upstream->delete_downstream();
upstream->resume_read(SHRPX_MSG_BLOCK, 0);
if(upstream->resume_read(SHRPX_MSG_BLOCK, 0) == -1) {
return;
}
}
}
}