Constant client::rpc::types::MAX_GAS_CALL_REQUEST

pub const MAX_GAS_CALL_REQUEST: u64 = 15_000_000;

The MAX_GAS_CALL_REQUEST is used as max value of cfx_call or cfx_estimate’s gas value to prevent call_virtual consumes too much resource. The tx_pool will reject the tx if the gas is larger than half of the block gas limit. which is 30_000_000 before 1559, and 60_000_000 after 1559.