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Andrew Groot
fed06d280a
Expanded upon some existing pages and populated some pages that were linked to despite not existing.
31 lines
1.8 KiB
Markdown
31 lines
1.8 KiB
Markdown
<div class="cwikmeta">{
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"title":"REJECT",
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"related":["/protocol"]
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}</div>
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# Response: Reject ("reject")
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Notifies peer that a received message is invalid.
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## Message Format
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| Field | Length | Format | Description |
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|--|--|--|--|
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| rejected message type | variable | [variable length string](/protocol/formats/variable-length-string) | The [command string](/protocol/network/messages#command-string) of the message that is being rejected (e.g. "tx"). |
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| rejection code | 1 byte | [rejection code](#rejection-codes) | A code indicating why the message was rejected. |
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| rejection reason* | variable | [variable length string](/protocol/formats/variable-length-string) | A description of why the message was rejected. |
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\* *rejection reason* is a string providing a human language explanation of the reason the message was rejected. This string is subject to change so client software **SHOULD NOT** use it programmatically.
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#### Rejection Codes
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| Name | Value | Response To | Description |
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|-------------|-------|---------------|-----------|
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| REJECT_MALFORMED | 0x01 | any | Message cannot be deserialized. |
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| REJECT_INVALID | 0x10 | BLOCK, TX, FILTERSIZEXTHIN | Block or transaction is invalid, or xthin filter size is too small |
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| REJECT_OBSOLETE | 0x11 | VERSION | This node no longer supports your client protocol version |
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| REJECT_DUPLICATE | 0x12 | unused | |
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| REJECT_NONSTANDARD | 0x40 | TX | Transaction is [non-standard](/protocol/blockchain/transaction-validation/network-level-validation-rules#standard-transactions), or not final as per [BIP68](/protocol/forks/bip-0068). |
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| REJECT_DUST | 0x41 | TX | Transaction has an output that is too small. |
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| REJECT_INSUFFICIENTFEE | 0x42 | TX | Transaction does not pay enough in fees to be relayed. |
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| REJECT_CHECKPOINT | 0x43 | unused | | |