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router package

Overview

Package router provides swap routing and execution across GnoSwap liquidity pools.

The router handles token swaps with multi-hop routing, slippage protection, and automatic GNOT wrapping/unwrapping. It supports both exact input and exact output swap modes with deadline validation.

Key features: - Multi-hop routing across up to 3 pools - Quote distribution for optimal execution - Native GNOT handling with automatic wrap/unwrap - Slippage protection via min/max amounts - Router fee (0.15%) on all swaps - Deadline enforcement to prevent stale transactions

The router acts as a proxy to version-specific implementations, currently routing to v1 for all swap operations.

Function

ExactOutSingleSwapRoute

func ExactOutSingleSwapRoute(cur realm, inputToken string, outputToken string, amountOut string, routeArr string, amountInMax string, sqrtPriceLimitX96 string, deadline int64, referrer string) (string, string)

ExactOutSingleSwapRoute executes a single-hop swap with exact output amount.

Parameters:

  • inputToken: path of input token
  • outputToken: path of output token
  • amountOut: exact output amount
  • routeArr: encoded route
  • amountInMax: maximum input amount
  • sqrtPriceLimitX96: price limit for the swap
  • deadline: transaction deadline
  • referrer: referrer address for reward tracking

Returns:

  • string: actual input amount
  • string: actual output amount

Params

Command

# WARNING: This command is running in an INSECURE mode.
# It is strongly recommended to use a hardware device for signing
# and avoid trusting any computer connected to the internet,
# as your private keys could be exposed.

gnokey maketx call -pkgpath "gno.land/r/gnoswap/router" -func "ExactOutSingleSwapRoute" -args $'' -args $'' -args $'' -args $'' -args $'' -args $'' -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -chainid "topaz-1" -remote "https://rpc.topaz.testnets.gno.land" ADDRESSgnokey query -remote "https://rpc.topaz.testnets.gno.land" auth/accounts/ADDRESS
gnokey maketx call -pkgpath "gno.land/r/gnoswap/router" -func "ExactOutSingleSwapRoute" -args $'' -args $'' -args $'' -args $'' -args $'' -args $'' -args $'' -args $'' -gas-fee 1000000ugnot -gas-wanted 1_000_000_000 -send "" -broadcast=false ADDRESS > call.tx
gnokey sign -tx-path call.tx -chainid "topaz-1" -account-number ACCOUNTNUMBER -account-sequence SEQUENCENUMBER ADDRESS
gnokey broadcast -remote "https://rpc.topaz.testnets.gno.land" call.tx