Syntax

exchange.IO("base", ...)

Queries or switches the base address of the exchange API. On a Web3 exchange object it sets the RPC node address, see exchange.IO("base", ...).


    
    
    
exchange.IO(k)


    
    
    
exchange.IO(k, address)

Examples

Switch the exchange API base address.


    javascript
    
    
function main () {
    // exchanges[0] is the first exchange object added when the live trading was created
    var old = exchanges[0].IO("base", "https://api.huobi.pro")
    Log("Base address before:", old, "current base address:", exchanges[0].IO("base"))
}


    python
    
    
def main():
    old = exchanges[0].IO("base", "https://api.huobi.pro")
    Log("Base address before:", old, "current base address:", exchanges[0].IO("base"))


    rust
    
    
fn main() {
    // exchanges[0] is the first exchange object added when the live trading was created
    let old = exchanges[0].IO(("base", "https://api.huobi.pro"));
    Log!("Base address before:", old, "current base address:", exchanges[0].IO("base"));
}

Returns

Type	Description
string / null value	Without `address`, returns the current base address; with `address`, switches the base address and returns the base address before the switch. Returns a null value on failure.

Arguments

Name	Type	Required	Description
k	string	Yes	Selects the `exchange.IO()` feature; `base` queries or switches the API base address.
address	string	No	New base address, e.g. `https://api.example.com`. When omitted, the current base address is queried.

Querying and switching the base address (`base` mode)

exchange.IO("base", address): switches the exchange API base address, equivalent to exchange.SetBase.
exchange.IO("base"): queries the current base address; if it has never been switched, the exchange's default API address is returned. Equivalent to exchange.GetBase.

A few exchanges have separate base address commands (for example for coin-margined contracts, options or the market data API); see the IO command table of the exchange page (all exchanges are listed in Capability Matrix).

exchange.IO("base", ...)

Querying and switching the base address (base mode)

Querying and switching the base address (`base` mode)