exchange.IO

Calls other interfaces related to the exchange object.

    
    
    
exchange.IO(k, ...args)

Examples

Switch the margin mode and call a raw exchange endpoint (Binance futures as an example).

    javascript
    
    
function main() {
    exchange.SetContractType("swap")
    // Switch the current contract to isolated margin
    exchange.IO("cross", false)
    // The third argument names the contract: switch the ETH_USDT perpetual to cross margin
    exchange.IO("cross", true, "ETH_USDT.swap")
    // Call an endpoint that has no wrapper function
    var ret = exchange.IO("api", "GET", "/fapi/v1/time")
    Log(ret)
}

    python
    
    
def main():
    exchange.SetContractType("swap")
    exchange.IO("cross", False)
    exchange.IO("cross", True, "ETH_USDT.swap")
    ret = exchange.IO("api", "GET", "/fapi/v1/time")
    Log(ret)

    rust
    
    
fn main() {
    let _ = exchange.SetContractType("swap");
    // Switch the current contract to isolated margin
    let _ = exchange.IO(("cross", false));
    // The third argument names the contract: switch the ETH_USDT perpetual to cross margin
    let _ = exchange.IO(("cross", true, "ETH_USDT.swap"));
    // Call an endpoint that has no wrapper function
    let ret = exchange.IO(("api", "GET", "/fapi/v1/time"));
    Log!(ret);
}

Returns

Arguments

See Also

Remarks

Commands at a glance

Each command has its own page in this category; commands specific to an exchange object are indexed below and documented on the exchange pages (see Capability Matrix).

Return values and error checking

The return value depends on the command. Some commands (for example cross, dual or unified on some futures exchanges) return a null value on success, which is the same as the value returned on failure; to confirm success, read the error message with GetLastError after the call. A command the exchange does not support reports an error (unsupported io method) and returns a null value.

Commands that act on a specific contract, such as cross, dual and unified, accept a symbol argument after the value to name the contract, for example exchange.IO("cross", false, "ETH_USDT.swap"); without it they act on the current trading pair and contract. Whether such a command applies per contract or to the whole account, and what each command returns, is given in the IO command table of the exchange page.

Exchange-specific commands

Commands of exchange.IO() specific to an exchange object; see the exchange page for arguments and details.