A sharing infrastructure is directed at providing a framework for sharing resources between initiators and participants. The sharing infrastructure is designed to manage and direct various sharing providers, articulate information about sharing relationships, and to provide a framework for pluggable data sharing, data discovery, schema translation, and conflict resolution. The infrastructure allows for common sharing operations to be implemented in a more centralized fashion, and eases the cost of implementing new sharing providers. An extensible and pluggable provider model eases remote and local configuration; schema mapping; and protocol handling. A sharing protocol is defined that relates to establishing and managing a sharing relationship.