Communication: Save failed-to-send message

[nityanandaz]

Warning

Database is in-memory only

Part #48

Android

initial	sending	failure	retry	complete

[nityanandaz]

Context

Problem

Networks are sometimes constrained or expensive.

Motivation

Users want to go on messaging.

Requirements Engineering

Existing (Problematic) Solution / System

The app starts loading, if the user tapped the send button.
As long as the app is loading, the user cannot compose subsequent messages.

Proposed System

The send-message request starts loading, if the user tapped the send button.
The request is queued in the conversation view.

Success

The message is inserted into the appropriate section.

Failure

The message remains in the queue.
The user can retry sending the message.

The queue is persisted across app launches/life cycles.

(The user can remove the message.)

Requirements

Functional Requirements

1. Queue message
2. Insert message into section
3. Retry sending a message

Non-functional Requirements

1. .

Analysis

Analysis Object Model

• Message
• Conversation
• Send Command/Action/Task

Dynamic Behavior

.

[nityanandaz]

Simulator.Screen.Recording.-.iPhone.15.Pro.Max.-.2024-03-09.at.19.09.19.mp4

[nityanandaz]

Simulator.Screen.Recording.-.iPhone.15.Pro.Max.-.2024-03-10.at.22.28.42.mp4

Simulator.Screen.Recording.-.iPhone.15.Pro.Max.-.2024-03-10.at.22.30.16.mp4

[nityanandaz]

Revision

Retry manually only after sending failed.

1. SendMessageView send
   1. On success end
   2. On failure ConversationOfflineSection