btcjson+rpc: expose a transaction's weight via RPC

btcjson/chainsvrresults.go

@@ -265,6 +265,7 @@ type GetPeerInfoResult struct {
 type GetRawMempoolVerboseResult struct {
 	Size             int32    `json:"size"`
 	Vsize            int32    `json:"vsize"`
+	Weight           int32    `json:"weight"`
 	Fee              float64  `json:"fee"`
 	Time             int64    `json:"time"`
 	Height           int64    `json:"height"`
@@ -505,6 +506,7 @@ type TxRawResult struct {
 	Hash          string `json:"hash,omitempty"`
 	Size          int32  `json:"size,omitempty"`
 	Vsize         int32  `json:"vsize,omitempty"`
+	Weight        int32  `json:"weight,omitempty"`
 	Version       int32  `json:"version"`
 	LockTime      uint32 `json:"locktime"`
 	Vin           []Vin  `json:"vin"`
@@ -523,6 +525,7 @@ type SearchRawTransactionsResult struct {
 	Hash          string       `json:"hash"`
 	Size          string       `json:"size"`
 	Vsize         string       `json:"vsize"`
+	Weight        string       `json:"weight"`
 	Version       int32        `json:"version"`
 	LockTime      uint32       `json:"locktime"`
 	Vin           []VinPrevOut `json:"vin"`

docs/json_rpc_api.md

@@ -484,7 +484,7 @@ Example Return|`{`<br />&nbsp;&nbsp;`"bytes": 310768,`<br />&nbsp;&nbsp;`"size":
 |Description|Returns an array of hashes for all of the transactions currently in the memory pool.<br />The `verbose` flag specifies that each transaction is returned as a JSON object.|
 |Notes|<font color="orange">Since btcd does not perform any mining, the priority related fields `startingpriority` and `currentpriority` that are available when the `verbose` flag is set are always 0.</font>|
 |Returns (verbose=false)|`[ (json array of string)`<br />&nbsp;&nbsp;`"transactionhash", (string) hash of the transaction`<br />&nbsp;&nbsp;`...`<br />`]`|
-|Returns (verbose=true)|`{ (json object)`<br />&nbsp;&nbsp;`"transactionhash": { (json object)`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"size": n, (numeric) transaction size in bytes`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"vsize": n, (numeric) transaction virtual size`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"fee" : n, (numeric) transaction fee in bitcoins`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"time": n, (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"height": n, (numeric) block height when transaction entered the pool`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"startingpriority": n, (numeric) priority when transaction entered the pool`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"currentpriority": n, (numeric) current priority`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"depends": [ (json array) unconfirmed transactions used as inputs for this transaction`<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`"transactionhash", (string) hash of the parent transaction`<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`...`<br />&nbsp;&nbsp;&nbsp;&nbsp;`]`<br />&nbsp;&nbsp;`}, ...`<br />`}`|
+|Returns (verbose=true)|`{ (json object)`<br />&nbsp;&nbsp;`"transactionhash": { (json object)`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"size": n, (numeric) transaction size in bytes`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"vsize": n, (numeric) transaction virtual size`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"weight": n, (numeric) The transaction's weight (between vsize*4-3 and vsize*4)`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"fee" : n, (numeric) transaction fee in bitcoins`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"time": n, (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"height": n, (numeric) block height when transaction entered the pool`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"startingpriority": n, (numeric) priority when transaction entered the pool`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"currentpriority": n, (numeric) current priority`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"depends": [ (json array) unconfirmed transactions used as inputs for this transaction`<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`"transactionhash", (string) hash of the parent transaction`<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`...`<br />&nbsp;&nbsp;&nbsp;&nbsp;`]`<br />&nbsp;&nbsp;`}, ...`<br />`}`|
 |Example Return (verbose=false)|`[`<br />&nbsp;&nbsp;`"3480058a397b6ffcc60f7e3345a61370fded1ca6bef4b58156ed17987f20d4e7",`<br />&nbsp;&nbsp;`"cbfe7c056a358c3a1dbced5a22b06d74b8650055d5195c1c2469e6b63a41514a"`<br />`]`|
 |Example Return (verbose=true)|`{`<br />&nbsp;&nbsp;`"1697a19cede08694278f19584e8dcc87945f40c6b59a942dd8906f133ad3f9cc": {`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"size": 226,`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"fee" : 0.0001,`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"time": 1387992789,`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"height": 276836,`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"startingpriority": 0,`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"currentpriority": 0,`<br />&nbsp;&nbsp;&nbsp;&nbsp;`"depends": [`<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;`"aa96f672fcc5a1ec6a08a94aa46d6b789799c87bd6542967da25a96b2dee0afb",`<br />&nbsp;&nbsp;&nbsp;&nbsp;`]`<br />`}`|
 [Return to Overview](#MethodOverview)<br />

mempool/mempool.go

@@ -1509,6 +1509,7 @@ func (mp *TxPool) RawMempoolVerbose() map[string]*btcjson.GetRawMempoolVerboseRe
 		mpd := &btcjson.GetRawMempoolVerboseResult{
 			Size:             int32(tx.MsgTx().SerializeSize()),
 			Vsize:            int32(GetTxVirtualSize(tx)),
+			Weight:           int32(blockchain.GetTransactionWeight(tx)),
 			Fee:              btcutil.Amount(desc.Fee).ToBTC(),
 			Time:             desc.Added.Unix(),
 			Height:           int64(desc.Height),

rpcserver.go

@@ -756,6 +756,7 @@ func createTxRawResult(chainParams *chaincfg.Params, mtx *wire.MsgTx,
 		Hash:     mtx.WitnessHash().String(),
 		Size:     int32(mtx.SerializeSize()),
 		Vsize:    int32(mempool.GetTxVirtualSize(btcutil.NewTx(mtx))),
+		Weight:   int32(blockchain.GetTransactionWeight(btcutil.NewTx(mtx))),
 		Vin:      createVinList(mtx),
 		Vout:     createVoutList(mtx, chainParams, nil),
 		Version:  mtx.Version,

rpcserverhelp.go

@@ -207,6 +207,7 @@ var helpDescsEnUS = map[string]string{
 	"txrawresult-blocktime":     "Block time in seconds since the 1 Jan 1970 GMT",
 	"txrawresult-size":          "The size of the transaction in bytes",
 	"txrawresult-vsize":         "The virtual size of the transaction in bytes",
+	"txrawresult-weight":        "The transaction's weight (between vsize*4-3 and vsize*4)",
 	"txrawresult-hash":          "The wtxid of the transaction",
 
 	// SearchRawTransactionsResult help.
@@ -223,6 +224,7 @@ var helpDescsEnUS = map[string]string{
 	"searchrawtransactionsresult-blocktime":     "Block time in seconds since the 1 Jan 1970 GMT",
 	"searchrawtransactionsresult-size":          "The size of the transaction in bytes",
 	"searchrawtransactionsresult-vsize":         "The virtual size of the transaction in bytes",
+	"searchrawtransactionsresult-weight":        "The transaction's weight (between vsize*4-3 and vsize*4)",
 
 	// GetBlockVerboseResult help.
 	"getblockverboseresult-hash":              "The hash of the block (same as provided)",
@@ -476,6 +478,7 @@ var helpDescsEnUS = map[string]string{
 	"getrawmempoolverboseresult-currentpriority":  "Current priority",
 	"getrawmempoolverboseresult-depends":          "Unconfirmed transactions used as inputs for this transaction",
 	"getrawmempoolverboseresult-vsize":            "The virtual size of a transaction",
+	"getrawmempoolverboseresult-weight":           "The transaction's weight (between vsize*4-3 and vsize*4)",
 
 	// GetRawMempoolCmd help.
 	"getrawmempool--synopsis":   "Returns information about all of the transactions currently in the memory pool.",