danog/MadelineProto 8.0.0-beta148

Bugfix release

on GitHub

Fixes by @danog:

• Connection stability fixes
• Avoid GC bugs
• Improve media DC logic
• Fix sendDocument/sendPhoto through IPC API
• Fix upload of images with no content-length
• Fix usage of streams and filecallbacks through the IPC API
• Allow using fopen on php://memory
• Improve stream upload logic
• Handle MSG_WAIT_FAILED errors
• Improve call queue
• Improve tests