Write some Software

(1) Multiplatform Instant messaging Client using XAMARIN as a base development platform. (Windows, Android, iOS) (2). Windows Based Server for the Instant Messaging Client. (3) Features include, Text chat (support multimedia sending as embedded message e.g. Picture, HTML, video, voice), Voice Chat, Video conferencing. 4. Instant Messages can have categories assigned 5. The instant messenger client must be compiled for Windows, Android, and iOS platforms 6. The server must be developed using C# but does not have to be XAMARIN 1. Voice and Video conferencing components can be developed using any technology or simply be an integration of existing open source 2. Chat server module must be developed using C#and be scalable. (7) Describe the application of the software being specified.: (a) This Instant Messager will have ability to chose multiple categories for the instant messenger. (b) setup shall be user defined username and password. (password will only be requested when logging installed again and choosing existing username. Password will be required. c. Only on instance can be logged on at a time d. Can only be installed as a service ensures always on. e. Gives a DELIVERED , READ, DELETED and REPLIED status to each message. Both receiving and sending client, and SERVER are updated on the status. f. Offline Message accepted. g. Group chat, Voice, video accepted h. Conference call, conference chat, conference video (ad-hoc group) i. Can do persistent notification 7. Open source components can be used provided they is no restriction to the use of the final product and final product can be close sourced and licensed. 8. Should be able to support XMPP hence Facebook mesengeer and Google hangout accounts/communication can be done through it. (support multi-account setup) N.B: Should have all capabilities of Whatsapp/BB Messenger. Solution should be scalable and enterprise ready Full documentation and Source code will be expected as part of final delivery.