this is the type of assumption we shouldn't violate.

See https://github.com/jbenet/go-ipfs/issues/153#issuecomment-63350535

fix(core) bootstrap panic

@jbenet @mappum

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

feat(core) supervise bootstrap connections

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

* only bootstrap if the number of active connections falls below a given threshold
* when bootstrapping, connect to a subset of peers

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

feel free to contest/revert if this becomes a problem

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

to improve SnR. Feel free to contest these changes if you find these
statements useful. In my experience, they were adding noise at Info.

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

+/- if len(addresses) is 0, connSetup will be called with nil value for c.
+/- avoid variable reassignment

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

for higher SnR at IPFS_LOGGING=info

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

having an error return value makes the interface a bit confusing to
use. Just ponder... What would an error returned from a predicate
function mean?

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

refactor(peer) some _minor_ safety features

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

for safety!

use mockpeer.WithID methods to create peers in tests

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

feat(bootstrap!) add saturn, neptune, pluto, uranus

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

prevent sending of same block to a peer twice

Updated Datastore, to have a Has.

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

updated msgio

bitswap blockservice diplomacy

With the new msgio, we no longer need to bound message sizes for
the sake of buffers. MaxMessageSize should remain though in order
to prevent streaming of huge things. In general, messages shouldn't
be above one MB. This max is now set to 4MB.

If a block happens to be larger, we should split it up.