Reuse bound connection to improve performance #146
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When connecting to an LDAP server on development, I noticed the ldap_bind() function would take around 10 seconds to respond. This showed me that the ldap_open() and ldap_bind() is called 2 or 3 times in one request cycle, even for same username/password.
I implemented this reuse of the bound resource and have been able to reduce the request time considerably. I propose to implement this. Since it is possible to bind a connection with different usernames, I am keeping a mapping of username => resource to have separate connections for different users.