APA: Asynchronous Packet Automata

- source routing
- network coordinates
- back-pressure flow control

 :
 1    1    1
0A2  0D2..0E2
 3    3    3
 :    :    :
 1    1    1
0B2..0C2..0F2
 3    3    3

A -> E
A: {3212^|key:value;...;}
B: {212^1|key:value;...;}
C: {12^01|key:value;...;}
D: {2^301|key:value;...;}
E: {^0301|key:value;...;}

A -> F
A: {322^|key:value;...;}
B: {22^1|key:value;...;}
C: {2^01|key:value;...;}
F: {^001|key:value;...;}

A -> flood
A: {FFFF^|key:value;...;}
B: {FFF^1|key:value;...;}
C: {FF^01|key:value;...;}
D: {F^301|key:value;...;} F: {F^001|key:value;...;}
E: {^0301|key:value;...;} E: {F^3001|key:value;...;}

set key values key1:value1;key2:value2;
query key values: key1:?;key2:?;
query all key values: ?:?

buffer overflow character: #
{3212^|key1:value1;key2:val#}

buffer escape character: \
{3212^|key1:\#\}\;\\;}