Network

LQRemotePollRepoServer

Serves as a HTTP Server (WebServer class in Squeak/Smalltalk) and works closely together with LQPollRepo to manage objects over the network. The LQRemotePollRepoServer contains the following methods:

• onRequest: req: checks if the incoming request is a POST or GET request.
• httpPost/httpGet: both methods get called within onRequest depending on the type of the incoming request.
• isAddAnswerSetRequest: req: checks the message field of the incoming POST request for addAnswerSet.
• isGroupGetRequest: req: checks the message field of the incoming GET request for getGroup.
• isPollGetRequest: req: true if no message field exists
• httpPostAddAnswerSet: req: extracts the necessary data from the POST request and passes that data to the addAnswerSet method.
• addAnswerSet: anAnswerSet FromUser: aUser ToPoll: aPoll: checks for sufficient authentication and adds the answer set (implementation in LQPoll).
• httpGetPoll: req: extracts the id from the GET request and checks for existence and sufficient authentication. If the poll exists it gets included in the response in STON format.
• httpGetGroup: req: same as httpGetPoll but for a group id
• pollWithId: id: extracts the poll from the LQPollRepo
• request: req isAuthenticatedFor: poll: on polls which require authentication this method checks for a valid user token
• unauthorizedResponseCode: 401
• send401Response: request: builds and sends the response
• initialize: registers the service under the '/' route

LQPollRepo:

Singleton client for the LQRemotePollRepoServer. The singleton manages the user's token. The following methods are implemented:

• url/url:: getter and setter for url instance var
• addAnswerSet: anAnswerSet ToPoll: aPollId: sends a POST request to the server containing the answer set in STON format
• at: key ifAbsent: aBlock: sends request to the server
• groupAt: key: requests a group given a key from the server
• requestToken
• serverAt: key: sends GET request to server given a poll id
• shouldAskPasswordForResponse: aWebResponse
• urlForGroupRequestForPollWithId/urlForPollWithId/urlForPostingAnswerSet: return the corresponding url with the given parameters

LiquidNetworkServiceProvider

Registers a networkService by using the current ServiceRegsitry

LQAntiCheat

LQAntiCheat checks whether or not an answerSet is allowed to be added to a poll. It ensures that group-based answer-exclusion is enforced by the server and that multiple answers cannot be added to a poll.

LQRemoteError

Special error class to determinate errors that occured on the remote server.