Service

Services are the heart of RPyC: each side of the connection exposes a service, which define the capabilities available to the other side.

Note that the services by both parties need not be symmetric, e.g., one side may exposed service A, while the other may expose service B. As long as the two can interoperate, you’re good to go.

class rpyc.core.service.Service(conn)[source]

The service base-class. Derive from this class to implement custom RPyC services:

  • The name of the class implementing the Foo service should match the pattern FooService (suffixed by the word ‘Service’)

    class FooService(Service):
        pass
    
    FooService.get_service_name() # 'FOO'
    FooService.get_service_aliases() # ['FOO']
    
  • To supply a different name or aliases, use the ALIASES class attribute

    class Foobar(Service):
        ALIASES = ["foo", "bar", "lalaland"]
    
    Foobar.get_service_name() # 'FOO'
    Foobar.get_service_aliases() # ['FOO', 'BAR', 'LALALAND']
    
  • Override on_connect() to perform custom initialization

  • Override on_disconnect() to perform custom finalization

  • To add exposed methods or attributes, simply define them normally, but prefix their name by exposed_, e.g.

    class FooService(Service):
        def exposed_add(self, x, y):
            return x + y
    
  • All other names (not prefixed by exposed_) are local (not accessible to the other party)

Note

You can override _rpyc_getattr, _rpyc_setattr and _rpyc_delattr to change attribute lookup – but beware of possible security implications!

on_connect()[source]

called when the connection is established

on_disconnect()[source]

called when the connection had already terminated for cleanup (must not perform any IO on the connection)

classmethod get_service_aliases()[source]

returns a list of the aliases of this service

classmethod get_service_name()[source]

returns the canonical name of the service (which is its first alias)

classmethod exposed_get_service_aliases()

returns a list of the aliases of this service

classmethod exposed_get_service_name()

returns the canonical name of the service (which is its first alias)

class rpyc.core.service.VoidService(conn)[source]

void service - an do-nothing service

class rpyc.core.service.ModuleNamespace(getmodule)[source]

used by the SlaveService to implement the magical ‘module namespace’

class rpyc.core.service.SlaveService(conn)[source]

The SlaveService allows the other side to perform arbitrary imports and execution arbitrary code on the server. This is provided for compatibility with the classic RPyC (2.6) modus operandi.

This service is very useful in local, secure networks, but it exposes a major security risk otherwise.

exposed_execute(text)[source]

execute arbitrary code (using exec)

exposed_eval(text)[source]

evaluate arbitrary code (using eval)

exposed_getmodule(name)[source]

imports an arbitrary module

exposed_getconn()[source]

returns the local connection instance to the other side