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27 lines
795 B
Markdown
27 lines
795 B
Markdown
---
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title: "CoAP API reference"
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symbol_kind: "intro"
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decl_name: "coap.h"
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items:
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- { name: mg_set_protocol_coap.md }
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- { name: mg_coap_add_option.md }
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- { name: mg_coap_free_options.md }
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- { name: mg_coap_send_message.md }
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- { name: mg_coap_send_ack.md }
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- { name: mg_coap_parse.md }
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- { name: mg_coap_compose.md }
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- { name: struct_mg_coap_option.md }
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- { name: struct_mg_coap_message.md }
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---
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CoAP message format:
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```
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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|Ver| T | TKL | Code | Message ID | Token (if any, TKL bytes) ...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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| Options (if any) ... |1 1 1 1 1 1 1 1| Payload (if any) ...
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
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```
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