[Trace] debug_traceCall
The debug_traceCall allows tracing on a specific block if callArgs is provided.
JSONRPC: debug_traceCall
Request
- application/json
Body
Array [
- IntegerBlockNumber
- HexadecimalBlockNumber
- BlockTag
- BlockHash
]
params
undefined[]
TracerCallObject
object
The tracer call object. See the next table for the object's properties.
(optional) Address the transaction is simulated to have been sent from. The 0x00..0 address is used if no address is specified.
(optional) Address the transaction is sent to.
(optional) Hash of the method signature and encoded parameter. It replaces data field, but 'data` field is still supported for backward compatibility.
BlockNumberOrHashOrTag
object
oneOf
the block number with type integer
number
the block number with type hexadecimal
string
the block tag [latest, pending, earliest]
string
the block hash
string
TracerObject
object
Tracer type.
Possible values: [4byteTracer
, callTracer
, fastCallTracer
, evmdisTracer
, noopTracer
, opcountTracer
, prestateTracer
, revertTracer
, unigramTracer
, bigramTracer
, trigramTracer
]
Setting this will enable JavaScript-based transaction tracing, described in the next section. If set, the previous four arguments will be ignored. The predefined tracers can also be used as the following table.
Tracer Name | Description |
---|---|
4byteTracer | traces 4-byte solidity function signatures. |
callTracer | a slow version of fastCallTracer. It is deprecated in favor of fastCallTracer. |
fastCallTracer | traces internal contract calls, gas usage, and call results. |
evmdisTracer | returns information needed to perform evmdis-style disassembly. |
noopTracer | is a template tracer that does nothing. |
opcountTracer | is a sample tracer that counts the executed opcode. |
prestateTracer | returns information needed to construct a custom local genesis state that this transaction can run on. |
revertTracer | returns the revert reason, or an empty string if the transaction has not reverted. |
unigramTracer | counts the occurrence of each opcode. |
bigramTracer | counts the occurrence of two consecutive opcodes. |
trigramTracer | counts the occurrence of three consecutive opcodes. |
Responses
- 200
The detail tracing infomation
- application/json
- Schema
- Example (from schema)
Schema
error
object
A Number that indicates the error type that occurred. This MUST be an integer.
code | message | description |
---|---|---|
-32700 | Parse error | invalid JSON was received by the server. An error occurred on the server while parsing the JSON text. |
-32602 | Invalid params | Invalid method parameter(s). |
A String providing a short description of the error. The message SHOULD be limited to a concise single sentence.
A Primitive or Structured value that contains additional information about the error. This may be omitted. The value of this member is defined by the Server (e.g. detailed error information, nested errors etc.).
{
"jsonrpc": "2.0",
"id": 0,
"error": {
"code": -32700,
"message": "Parse error",
"data": "string"
},
"result": {}
}