Sending Transaction
Any operation contracting with WELUPS network is a transaction. A transaction can be Welups transfer, WRC-10 transfer, freezing & unfreezing, voting, Etc.
A normal routine for sending a transaction is:
Create -> Sign -> Broadcast -> (wait) -> Lookup and get receipt
Welups SDK defines the same protobufs include all RPC APIs and transaction related classes, also, Welups SDK wraps the functions in WelClient.class.
public static void sendTrx()
{
System.out.println("============= TRC transfer =============");
WelClient client = new WelClient("172.104.51.182:16669","172.104.51.182:16669","private key");
try {
TransactionExtention transactionExtention = client.transfer("414203485a535a4072C9FBFaADDfe2A010AD0BcdB0", "41a9c46373aEB4749E3CE45acA242b027A46f486f9", 20_000_000);
Transaction signedTxn = client.signTransaction(transactionExtention);
String ret = client.broadcastTransaction(signedTxn);
System.out.println("======== Result ========\n" + ret.toString());
}
catch (Exception e) {
System.out.println("error: " + e);
}
}
result:
public static void sendTrx()
============= TRC transfer =============
transactionExtention
transaction {
raw_data {
ref_block_bytes: "\355<"
ref_block_hash: "\325\003\3051\266\232\236\025"
expiration: 1641471042000
contract {
type: TransferContract
parameter {
type_url: "type.googleapis.com/protocol.TransferContract"
value: "\n\025AB\[email protected]\311\373\372\255\337\342\240\020\255\v\315\260\022\025A\251\304cs\256\264t\236<\344Z\312$+\002zF\364\206\371\030\200\332\304\t"
}
}
timestamp: 1641470984417
}
}
txid: "\266\360\025\326\270<O\364j\vla$D\315I\314\207{\334\363\276\331:6[\200\216A\227\361%"
result {
result: true
}
signedTxn
raw_data {
ref_block_bytes: "\355<"
ref_block_hash: "\325\003\3051\266\232\236\025"
expiration: 1641471042000
contract {
type: TransferContract
parameter {
type_url: "type.googleapis.com/protocol.TransferContract"
value: "\n\025AB\[email protected]\311\373\372\255\337\342\240\020\255\v\315\260\022\025A\251\304cs\256\264t\236<\344Z\312$+\002zF\364\206\371\030\200\332\304\t"
}
}
timestamp: 1641470984417
}
signature: "\304\3763\"\265\257y\203\376\237\372\304\342\215>\247\\wj\326\355\345\232\022\216\006\233F4\356\350\322$I\\\312v\330\r\177\256\003\372\253\311\3151\373kF\212Lm\266&f\3506L\234\270\355\224\256\000"
======== Result ========
b6f015d6b83c4ff46a0b6c612444cd49cc877bdcf3bed93a365b808e4197f125
In Wel SDK, the routine is:
- 1.Create a WelClient object with your private key.
- 2.Obtain a TransactionExtention object from WelClient.transfer().
- 3.Call WelClient.signTransaction()to sign the transaction with your private key binding with the WelClient object.
- 4.Call WelClient
.broadcastTransaction() to broadcast the transaction and get a TransactionReturn
Last modified 1yr ago