static int externalServerSubmit(externalServer_t* pServer, request_t* pRequest) {
int returnValue = 0;
connectionContext_t* pCContext = 0;
connection_t newConnection = 0;
listAddLast(pServer->unassignedRequests, pRequest);
pCContext = listRemoveFirst(pServer->freeConnections);
if (pCContext) {
connectionWaitCancel(pCContext->connection, getGlobalEventBase());
}
if (!pCContext) {
//check if we have reached max concurrent connections limit
// if not, create a new connection
if (listGetSize(pServer->activeConnections) < MAX_CONCURRENT_CONNECTIONS) {
LOG(DEBUG, "creating new external connection");
newConnection = connectionClientCreate(pServer->serverIP,
pServer->serverPort,
createConnectionHandler());
IfTrue(newConnection, ERR, "Error creating new connection to %s", pServer->serverName);
//got a new connection
pCContext = connectionContextCreate(newConnection, pServer);
IfTrue(pCContext, ERR, "Error allocting memory for connection context");
connectionSetContext(newConnection, pCContext);
newConnection = 0;
int err = connectionConnect(pCContext->connection);
IfTrue(err >= 0, ERR, "connect failed");
if (err == 1) {
LOG(DEBUG, "waiting for connect to complete");
pCContext->status = status_connecting;
connectionWaitForConnect(pCContext->connection, getGlobalEventBase());
goto OnSuccess;
}
}else {
//if we have reached max connection limit, we will let the request rest
//in the queue. Whenever one of the current connections get free, we will
//use that to send the request.
returnValue = 1;
goto OnSuccess;
}
}
if (pCContext) {
pCContext->status = status_active;
connectionSubmitRequests(pServer, pCContext);
}
goto OnSuccess;
OnError:
if (newConnection) {
connectionClose(newConnection);
}
if (pCContext) {
connectionContextDelete(pCContext, 0);
}
returnValue = 1;
OnSuccess:
return returnValue;
}
void TcpServer::incomingConnection(qintptr socketDescriptor) {
threadPool.addTask(createConnectionHandler(socketDescriptor));
}