diff options
Diffstat (limited to 'openbsc/src/proxy/proxy.txt')
| -rw-r--r-- | openbsc/src/proxy/proxy.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/openbsc/src/proxy/proxy.txt b/openbsc/src/proxy/proxy.txt index d91dc9a89..e80a65b7a 100644 --- a/openbsc/src/proxy/proxy.txt +++ b/openbsc/src/proxy/proxy.txt @@ -30,3 +30,28 @@ OpenBSC ip.access Abis/IP proxy design * keep-alive is handled independently, i.e. connections to BTS / BSC are always kept open + + +== code architecture == + +=== incoming TCP connection === +* connect TCP to BSC +* create 2 UDP sockets for packet injection + +=== incoming TCP data from BTS === +* determine if OML or RSL fd +* copy data to tx_queue of corresponding BSC fd + +=== incoming TCP data from BSC === +* determine if OML or RSL fd +* copy data to tx_queue of corresponding BTS fd + +=== incoming UDP data === +* determine OML or RSL and direction based on port number +* copy data to apropriate tx_queue + +=== termination of TCP connection === +* no matter if BSC or BTS disconnect, keep other TCP session open +* make sure upon re-connection, the correct pairs of connections + are matched up + |