2016-05-12 04:36:12 +08:00
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---
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title: "mg_coap_send_message()"
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decl_name: "mg_coap_send_message"
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symbol_kind: "func"
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signature: |
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uint32_t mg_coap_send_message(struct mg_connection *nc,
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struct mg_coap_message *cm);
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---
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2016-07-26 00:28:34 +08:00
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Compose CoAP message from `mg_coap_message`
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and send it into `nc` connection.
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Return 0 on success. On error, it is a bitmask:
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2016-05-12 04:36:12 +08:00
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- `#define MG_COAP_ERROR 0x10000`
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- `#define MG_COAP_FORMAT_ERROR (MG_COAP_ERROR | 0x20000)`
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- `#define MG_COAP_IGNORE (MG_COAP_ERROR | 0x40000)`
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- `#define MG_COAP_NOT_ENOUGH_DATA (MG_COAP_ERROR | 0x80000)`
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- `#define MG_COAP_NETWORK_ERROR (MG_COAP_ERROR | 0x100000)`
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