Opentalk or remoting libraries

> On 13 Nov 2014, at 19:17, Alain Rastoul <[hidden email]> wrote:
>
> Hi,
> CORBA main focus is about interoperability between systems, languages (don't know about opentalk).
> If you want smalltalk only remote execution, you can very easily do your own on Pharo with Zinc http components and Fuel serializer: a small server that reads smalltalk blocks, evaluates them and return the result (see below an example of server and client).
> I don't know if Zinc and Fuel run on Squeak, but I guess if not, they are equivalents ones or you could do the same.
> Beware that Fuel builds a graph of the objects touched by the object it serializes (the block) and serialize them along the way, that may be a problem if you have references to other big objects of your image.
>
> " ================================= RPC server"
> " start Zn server in background "
> ZnServer startDefaultOn: 1701.
> ZnServer default delegate: (ZnWebSocketDelegate handler:
> ([ :webSocket |
> [ [ | serializedRequest request response serializedResponse  |
> serializedRequest := webSocket readMessage.
> request := FLMaterializer materializeFromByteArray: serializedRequest.
> "execute block and it's value to response byte array"
> response := [ request value ]
> on: Exception do: [ :ex | ex resume: 'Exception ',ex class name , ' - ', ex messageText ].
> serializedResponse := FLSerializer serializeToByteArray: response .
> webSocket sendMessage: serializedResponse .
> ] repeat.
> ]
> on: ConnectionClosed, ConnectionTimedOut
> do: [ self crLog: 'Ignoring connection or timeout' ]
> ]) ).
> "========================================="
>
> " to stop the server"
> ZnServer stopDefault .
>
>
>
> "========================================= RPC CLIENT"
>
> " Client call to server: calculate factorial 100 on the other side"
> | webSocket |
> webSocket := ZnWebSocket to: 'ws://127.0.0.1:1701'.
> [ | request serializedRequest serializedResponse response |
> request := [  100 factorial ] . " the request is the block to evaluate"
> serializedRequest := FLSerializer serializeToByteArray: request . "serialize the block"
> webSocket sendMessage: serializedRequest . "send it"
> serializedResponse := webSocket readMessage . " read response"
> response := FLMaterializer materializeFromByteArray: serializedResponse. "deserialize to object"
> Transcript show: response asString ; cr  ]
> on: ConnectionClosed
> do: [ self crLog: 'Ignoring connection close, done' ]
>
>
> regards,
>
> Alain
>
>
> Le 12/11/2014 18:17, Annick Fron a écrit :
>> Hi,
>>
>> Are there some libraries in pharo to do remote calls like in Opentalk or Corba ?
>>
>> Annick
>>
>
>
>

> Nice.
>
> It is of course also important to note the security risks involved: the client can execute absolutely anything.
>
> One partial solution is to bind the server only to the localhost.
>
>> On 13 Nov 2014, at 19:17, Alain Rastoul <[hidden email]> wrote:
>>
>> Hi,
>> CORBA main focus is about interoperability between systems, languages (don't know about opentalk).
>> If you want smalltalk only remote execution, you can very easily do your own on Pharo with Zinc http components and Fuel serializer: a small server that reads smalltalk blocks, evaluates them and return the result (see below an example of server and client).
>> I don't know if Zinc and Fuel run on Squeak, but I guess if not, they are equivalents ones or you could do the same.
>> Beware that Fuel builds a graph of the objects touched by the object it serializes (the block) and serialize them along the way, that may be a problem if you have references to other big objects of your image.
>>
>> " ================================= RPC server"
>> " start Zn server in background "
>> ZnServer startDefaultOn: 1701.
>> ZnServer default delegate: (ZnWebSocketDelegate handler:
>> ([ :webSocket |
>> [ [ | serializedRequest request response serializedResponse  |
>> serializedRequest := webSocket readMessage.
>> request := FLMaterializer materializeFromByteArray: serializedRequest.
>> "execute block and it's value to response byte array"
>> response := [ request value ]
>> on: Exception do: [ :ex | ex resume: 'Exception ',ex class name , ' - ', ex messageText ].
>> serializedResponse := FLSerializer serializeToByteArray: response .
>> webSocket sendMessage: serializedResponse .
>> ] repeat.
>> ]
>> on: ConnectionClosed, ConnectionTimedOut
>> do: [ self crLog: 'Ignoring connection or timeout' ]
>> ]) ).
>> "========================================="
>>
>> " to stop the server"
>> ZnServer stopDefault .
>>
>>
>>
>> "========================================= RPC CLIENT"
>>
>> " Client call to server: calculate factorial 100 on the other side"
>> | webSocket |
>> webSocket := ZnWebSocket to: 'ws://127.0.0.1:1701'.
>> [ | request serializedRequest serializedResponse response |
>> request := [  100 factorial ] . " the request is the block to evaluate"
>> serializedRequest := FLSerializer serializeToByteArray: request . "serialize the block"
>> webSocket sendMessage: serializedRequest . "send it"
>> serializedResponse := webSocket readMessage . " read response"
>> response := FLMaterializer materializeFromByteArray: serializedResponse. "deserialize to object"
>> Transcript show: response asString ; cr  ]
>> on: ConnectionClosed
>> do: [ self crLog: 'Ignoring connection close, done' ]
>>
>>
>> regards,
>>
>> Alain
>>
>>
>> Le 12/11/2014 18:17, Annick Fron a écrit :
>>> Hi,
>>>
>>> Are there some libraries in pharo to do remote calls like in Opentalk or Corba ?
>>>
>>> Annick
>>>
>>
>>
>>
>
>

> Am 17.11.2014 um 11:05 schrieb Annick Fron <[hidden email]>:
>
> Thank you,
> My need is on a local network from machine to machine, in real time is possible, so no security involved.
> I would have preferred something more performant than web services or XMLRPC, since both serialization and XML serialization are slow.
> Annick
> Le 13 nov. 2014 à 20:17, Sven Van Caekenberghe <[hidden email]> a écrit :
>
>> Nice.
>>
>> It is of course also important to note the security risks involved: the client can execute absolutely anything.
>>
>> One partial solution is to bind the server only to the localhost.
>>
>>> On 13 Nov 2014, at 19:17, Alain Rastoul <[hidden email]> wrote:
>>>
>>> Hi,
>>> CORBA main focus is about interoperability between systems, languages (don't know about opentalk).
>>> If you want smalltalk only remote execution, you can very easily do your own on Pharo with Zinc http components and Fuel serializer: a small server that reads smalltalk blocks, evaluates them and return the result (see below an example of server and client).
>>> I don't know if Zinc and Fuel run on Squeak, but I guess if not, they are equivalents ones or you could do the same.
>>> Beware that Fuel builds a graph of the objects touched by the object it serializes (the block) and serialize them along the way, that may be a problem if you have references to other big objects of your image.
>>>
>>> " ================================= RPC server"
>>> " start Zn server in background "
>>> ZnServer startDefaultOn: 1701.
>>> ZnServer default delegate: (ZnWebSocketDelegate handler:
>>> ([ :webSocket |
>>> [ [ | serializedRequest request response serializedResponse  |
>>> serializedRequest := webSocket readMessage.
>>> request := FLMaterializer materializeFromByteArray: serializedRequest.
>>> "execute block and it's value to response byte array"
>>> response := [ request value ]
>>> on: Exception do: [ :ex | ex resume: 'Exception ',ex class name , ' - ', ex messageText ].
>>> serializedResponse := FLSerializer serializeToByteArray: response .
>>> webSocket sendMessage: serializedResponse .
>>> ] repeat.
>>> ]
>>> on: ConnectionClosed, ConnectionTimedOut
>>> do: [ self crLog: 'Ignoring connection or timeout' ]
>>> ]) ).
>>> "========================================="
>>>
>>> " to stop the server"
>>> ZnServer stopDefault .
>>>
>>>
>>>
>>> "========================================= RPC CLIENT"
>>>
>>> " Client call to server: calculate factorial 100 on the other side"
>>> | webSocket |
>>> webSocket := ZnWebSocket to: 'ws://127.0.0.1:1701'.
>>> [ | request serializedRequest serializedResponse response |
>>> request := [  100 factorial ] . " the request is the block to evaluate"
>>> serializedRequest := FLSerializer serializeToByteArray: request . "serialize the block"
>>> webSocket sendMessage: serializedRequest . "send it"
>>> serializedResponse := webSocket readMessage . " read response"
>>> response := FLMaterializer materializeFromByteArray: serializedResponse. "deserialize to object"
>>> Transcript show: response asString ; cr  ]
>>> on: ConnectionClosed
>>> do: [ self crLog: 'Ignoring connection close, done' ]
>>>
>>>
>>> regards,
>>>
>>> Alain
>>>
>>>
>>> Le 12/11/2014 18:17, Annick Fron a écrit :
>>>> Hi,
>>>>
>>>> Are there some libraries in pharo to do remote calls like in Opentalk or Corba ?
>>>>
>>>> Annick
>>>>
>>>
>>>
>>>
>>
>>
>
>

> Thank you,
> My need is on a local network from machine to machine, in real time is possible, so no security involved.
> I would have preferred something more performant than web services or XMLRPC, since both serialization and XML serialization are slow.
> Annick
> Le 13 nov. 2014 à 20:17, Sven Van Caekenberghe <[hidden email]> a écrit :
>
>> Nice.
>>
>> It is of course also important to note the security risks involved: the client can execute absolutely anything.
>>
>> One partial solution is to bind the server only to the localhost.
>>
>>> On 13 Nov 2014, at 19:17, Alain Rastoul <[hidden email]> wrote:
>>>
>>> Hi,
>>> CORBA main focus is about interoperability between systems, languages (don't know about opentalk).
>>> If you want smalltalk only remote execution, you can very easily do your own on Pharo with Zinc http components and Fuel serializer: a small server that reads smalltalk blocks, evaluates them and return the result (see below an example of server and client).
>>> I don't know if Zinc and Fuel run on Squeak, but I guess if not, they are equivalents ones or you could do the same.
>>> Beware that Fuel builds a graph of the objects touched by the object it serializes (the block) and serialize them along the way, that may be a problem if you have references to other big objects of your image.
>>>
>>> " ================================= RPC server"
>>> " start Zn server in background"
>>> ZnServer startDefaultOn: 1701.
>>> ZnServer default delegate: (ZnWebSocketDelegate handler:
>>> ([ :webSocket |
>>> [ [ | serializedRequest request response serializedResponse  |
>>> serializedRequest := webSocket readMessage.
>>> request := FLMaterializer materializeFromByteArray: serializedRequest.
>>> "execute block and it's value to response byte array"
>>> response := [ request value ]
>>> on: Exception do: [ :ex | ex resume: 'Exception ',ex class name , ' - ', ex messageText ].
>>> serializedResponse := FLSerializer serializeToByteArray: response .
>>> webSocket sendMessage: serializedResponse .
>>> ] repeat.
>>> ]
>>> on: ConnectionClosed, ConnectionTimedOut
>>> do: [ self crLog: 'Ignoring connection or timeout' ]
>>> ]) ).
>>> "========================================="
>>>
>>> " to stop the server"
>>> ZnServer stopDefault .
>>>
>>>
>>>
>>> "========================================= RPC CLIENT"
>>>
>>> " Client call to server: calculate factorial 100 on the other side"
>>> | webSocket |
>>> webSocket := ZnWebSocket to: 'ws://127.0.0.1:1701'.
>>> [ | request serializedRequest serializedResponse response |
>>> request := [  100 factorial ] . " the request is the block to evaluate"
>>> serializedRequest := FLSerializer serializeToByteArray: request . "serialize the block"
>>> webSocket sendMessage: serializedRequest . "send it"
>>> serializedResponse := webSocket readMessage . " read response"
>>> response := FLMaterializer materializeFromByteArray: serializedResponse. "deserialize to object"
>>> Transcript show: response asString ; cr  ]
>>> on: ConnectionClosed
>>> do: [ self crLog: 'Ignoring connection close, done' ]
>>>
>>>
>>> regards,
>>>
>>> Alain
>>>
>>>
>>> Le 12/11/2014 18:17, Annick Fron a écrit :
>>>> Hi,
>>>>
>>>> Are there some libraries in pharo to do remote calls like in Opentalk or Corba ?
>>>>
>>>> Annick
>>>>
>>>
>>>
>>>
>>
>>
>
>
>