Review encoders and message writers [SPR-17419]

[spring-projects-issues]

Arjen Poutsma opened SPR-17419 and commented

Review encoders and message writers for both error and cancellation signals

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This issue is a sub-task of #21941

[spring-projects-issues]

Arjen Poutsma commented

First couple of fixes are in: eac9e66 and 51bb96d

[spring-projects-issues]

Arjen Poutsma commented

And more: 11a017d, 611019b.

[spring-projects-issues]

Arjen Poutsma commented

And more: 256a6fe,
7a8a2d9, 9554277.