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20 lines
661 B
Markdown
20 lines
661 B
Markdown
---
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title: "mg_set_protocol_dns()"
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decl_name: "mg_set_protocol_dns"
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symbol_kind: "func"
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signature: |
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void mg_set_protocol_dns(struct mg_connection *nc);
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---
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Attach built-in DNS event handler to the given listening connection.
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DNS event handler parses incoming UDP packets, treating them as DNS
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requests. If incoming packet gets successfully parsed by the DNS event
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handler, a user event handler will receive `MG_DNS_REQUEST` event, with
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`ev_data` pointing to the parsed `struct mg_dns_message`.
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See
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[captive_dns_server](https://github.com/cesanta/mongoose/tree/master/examples/captive_dns_server)
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example on how to handle DNS request and send DNS reply.
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