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Fixed locking problems in HTTP, forced socket re-use in more circumstances, disabled socket re-use for progressive-like connections.

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This commit is contained in:
Thulinma 2012-09-07 12:38:53 +02:00
parent aee5528149
commit 3ab17a144f
1 changed files with 26 additions and 12 deletions
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38
src/conn_http.cpp
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@ -198,22 +198,22 @@ namespace Connector_HTTP{
H.SetHeader("X-UID", uid);//add the UID to the headers before copying
H.SetHeader("X-Origin", conn->getHost());//add the UID to the headers before copying
std::string request = H.BuildRequest();//copy the request for later forwarding to the connector
std::string orig_url = H.getUrl();
H.Clean();
//existing connections must be murdered, if any
if (connconn.count(uid)){
if (!connconn[uid]->in_use.try_lock()){
connconn[uid]->conn->close();
connconn[uid]->in_use.lock();
}
connconn[uid]->in_use.unlock();
}
//check if a connection exists, and if not create one
conn_mutex.lock();
if (!connconn.count(uid) || !connconn[uid]->conn->connected()){
if (connconn.count(uid)){connconn.erase(uid);}
connconn[uid] = new ConnConn(new Socket::Connection("/tmp/mist/http_"+connector));
connconn[uid]->conn->setBlocking(false);//do not block on spool() with no data
#if DEBUG >= 4
std::cout << "Created new connection " << uid << std::endl;
#endif
}else{
#if DEBUG >= 4
std::cout << "Re-using connection " << uid << std::endl;
#endif
}
//start a new timeout thread, if neccesary
if (timeout_mutex.try_lock()){
@ -272,17 +272,31 @@ namespace Connector_HTTP{
H.SetHeader("X-UID", uid);
H.SetHeader("Server", "mistserver/" PACKAGE_VERSION "/" + Util::Config::libver);
conn->Send(H.BuildResponse("200", "OK"));
//switch out the connection for an empty one - it makes no sense to keep these globally
Socket::Connection * myConn = connconn[uid]->conn;
connconn[uid]->conn = new Socket::Connection();
connconn[uid]->in_use.unlock();
//print some debug info
#if DEBUG >= 4
std::cout << "Handling request: " << orig_url << " => " << connector << " (" << uid << ")" << std::endl;
#endif
//continue sending data from this socket and keep it permanently in use
while (connconn.count(uid) && connconn[uid]->conn->connected() && conn->connected()){
if (connconn[uid]->conn->spool()){
while (myConn->connected() && conn->connected()){
if (myConn->spool()){
//forward any and all incoming data directly without parsing
conn->Send(connconn[uid]->conn->Received());
connconn[uid]->conn->Received().clear();
conn->Send(myConn->Received());
myConn->Received().clear();
}
conn->spool();
usleep(30000);
}
myConn->close();
delete myConn;
}
//print some debug info
#if DEBUG >= 4
std::cout << "Finished request: " << orig_url << " => " << connector << " (" << uid << ")" << std::endl;
#endif
}
}