feat(cast/send): legacy txn sending

[tarrencev]

Mostly good i think but hitting this issue after upgrading ethers-rs with cargo update -p ethers

cargo run --bin forge           
   Compiling ethers-providers v0.6.0 (https://github.com/gakonst/ethers-rs#c22dd8ea)
error[E0433]: failed to resolve: use of undeclared crate or module `http`
   --> /Users/tarrence/.cargo/git/checkouts/ethers-rs-c3a7c0a0ae0fe6be/c22dd8e/ethers-providers/src/transports/http.rs:162:27
    |
162 |     InvalidHeader(#[from] http::header::InvalidHeaderValue),
    |                           ^^^^ use of undeclared crate or module `http`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `ethers-providers` due to previous error

[mattsse]

smol nit

[mattsse]

Mostly good i think but hitting this issue after upgrading ethers-rs with cargo update -p ethers

cargo run --bin forge           
   Compiling ethers-providers v0.6.0 (https://github.com/gakonst/ethers-rs#c22dd8ea)
error[E0433]: failed to resolve: use of undeclared crate or module `http`
   --> /Users/tarrence/.cargo/git/checkouts/ethers-rs-c3a7c0a0ae0fe6be/c22dd8e/ethers-providers/src/transports/http.rs:162:27
    |
162 |     InvalidHeader(#[from] http::header::InvalidHeaderValue),
    |                           ^^^^ use of undeclared crate or module `http`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `ethers-providers` due to previous error

looks like this gakonst/ethers-rs#829 broke something

ah, here:

https://github.com/gakonst/ethers-rs/pull/829/files#diff-2d4418116321b8da3a56e7f37ae11b4b2ed50f031e24d8a87d9f4d234cd970e0R27

crate http is optional and only enabled for ws

https://github.com/gakonst/ethers-rs/pull/829/files#diff-2d4418116321b8da3a56e7f37ae11b4b2ed50f031e24d8a87d9f4d234cd970e0R65

but used here

https://github.com/gakonst/ethers-rs/pull/829/files#diff-9d1bf55195e9bdfb5252063b81a5579275fb8e689640629e9cfc1c151b68abdcR157-R167

we should make the http non optional

[gakonst]

nice work