pw_transfer: Reorganize code; ignore bad chunks after drops

- On writes, only send a transfer parameters update after the first
  chunk with an incorrect offset. This prevents storms of transfer
  parameters updates when early packets in the window are dropped. If
  that update is dropped, the client time out and resend its last chunk.
- Move transfer logic to the ServerContext class.
- Introduce the ClientConnection class, which represents a connection
  to a particular pw_transfer client. It bundles the server writers with
  the transfer parameters for those streams.

Change-Id: If68943610252c63c3044956f335a641523a8a917
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/63284
Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Commit-Queue: Wyatt Hepler <hepler@google.com>
12 files changed
tree: be6c9218b7445cc25d5e3d6ef5f8ff36c8cc410e
  1. build_overrides/
  2. docker/
  3. docs/
  4. pw_allocator/
  5. pw_analog/
  6. pw_android_toolchain/
  7. pw_arduino_build/
  8. pw_assert/
  9. pw_assert_basic/
  10. pw_assert_log/
  11. pw_base64/
  12. pw_bloat/
  13. pw_blob_store/
  14. pw_bluetooth_hci/
  15. pw_boot/
  16. pw_boot_cortex_m/
  17. pw_build/
  18. pw_build_info/
  19. pw_bytes/
  20. pw_checksum/
  21. pw_chrono/
  22. pw_chrono_embos/
  23. pw_chrono_freertos/
  24. pw_chrono_stl/
  25. pw_chrono_threadx/
  26. pw_cli/
  27. pw_console/
  28. pw_containers/
  29. pw_cpu_exception/
  30. pw_cpu_exception_cortex_m/
  31. pw_crypto/
  32. pw_docgen/
  33. pw_doctor/
  34. pw_env_setup/
  35. pw_file/
  36. pw_function/
  37. pw_fuzzer/
  38. pw_hdlc/
  39. pw_hex_dump/
  40. pw_i2c/
  41. pw_interrupt/
  42. pw_interrupt_cortex_m/
  43. pw_kvs/
  44. pw_libc/
  45. pw_log/
  46. pw_log_basic/
  47. pw_log_null/
  48. pw_log_rpc/
  49. pw_log_tokenized/
  50. pw_malloc/
  51. pw_malloc_freelist/
  52. pw_metric/
  53. pw_minimal_cpp_stdlib/
  54. pw_module/
  55. pw_multisink/
  56. pw_package/
  57. pw_persistent_ram/
  58. pw_polyfill/
  59. pw_preprocessor/
  60. pw_presubmit/
  61. pw_protobuf/
  62. pw_protobuf_compiler/
  63. pw_random/
  64. pw_result/
  65. pw_ring_buffer/
  66. pw_router/
  67. pw_rpc/
  68. pw_snapshot/
  69. pw_software_update/
  70. pw_span/
  71. pw_status/
  72. pw_stm32cube_build/
  73. pw_stream/
  74. pw_string/
  75. pw_symbolizer/
  76. pw_sync/
  77. pw_sync_baremetal/
  78. pw_sync_embos/
  79. pw_sync_freertos/
  80. pw_sync_stl/
  81. pw_sync_threadx/
  82. pw_sys_io/
  83. pw_sys_io_arduino/
  84. pw_sys_io_baremetal_lm3s6965evb/
  85. pw_sys_io_baremetal_stm32f429/
  86. pw_sys_io_stdio/
  87. pw_target_runner/
  88. pw_thread/
  89. pw_thread_embos/
  90. pw_thread_freertos/
  91. pw_thread_stl/
  92. pw_thread_threadx/
  93. pw_tls_client/
  94. pw_tls_client_boringssl/
  95. pw_tls_client_mbedtls/
  96. pw_tokenizer/
  97. pw_tool/
  98. pw_toolchain/
  99. pw_trace/
  100. pw_trace_tokenized/
  101. pw_transfer/
  102. pw_unit_test/
  103. pw_varint/
  104. pw_watch/
  105. pw_web_ui/
  106. pw_work_queue/
  107. targets/
  108. third_party/
  109. .bazelignore
  110. .bazelrc
  111. .clang-format
  112. .clang-tidy
  113. .eslintrc.json
  114. .gitattributes
  115. .gitignore
  116. .gn
  117. .prettierrc.js
  118. .pylintrc
  119. activate.bat
  120. AUTHORS
  121. bootstrap.bat
  122. bootstrap.sh
  123. BUILD.bazel
  124. BUILD.gn
  125. BUILDCONFIG.gn
  126. CMakeLists.txt
  127. LICENSE
  128. modules.gni
  129. OWNERS
  130. package.json
  131. PW_PLUGINS
  132. README.md
  133. tsconfig.json
  134. WORKSPACE
  135. yarn.lock
README.md

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