Further questions about LWIP/HTTP server

[Stefan Kalkowski]

On Monday, 1. March 2010 05:30:27 Peter Nguyen wrote:
> Hi,

Hi Peter,

>
> In digging to the HTTP server functionality, I noticed that with IP
> address, data is stored for local and remote IP addresses. I gather
> remote IPs refer to the machines making the requests. Does the local IP
> refer to the HTTP server itself??

Well, I'm not sure what code you refer to: the actual HTTP server example 
code, or something in the LwIP libary? Moreover, I'm not sure, whether I got 
you right.

If you talk about the HTTP server example code, there are 2 locations where 
a 'sockaddr' is used, the one representing the address of the http server, so 
to say the local IP (refering to the HTTP server):

libports/src/test/lwip/http_srv/main.cc:89
 struct sockaddr_in in_addr;                                                          
 in_addr.sin_family = AF_INET;                                                        
 in_addr.sin_port = htons(80);                                                        
 in_addr.sin_addr.s_addr = INADDR_ANY;
 if(lwip_bind(s, (struct sockaddr*)&in_addr, sizeof(in_addr))) {
 ...

and one which is used to accept client connections, that will contain the 
address of the client, after a successful accept:

libports/src/test/lwip/http_srv/main.cc:106
 struct sockaddr addr;                                                            
 socklen_t len = sizeof(addr);                                                    
 int client = lwip_accept(s, &addr, &len);
 ...

Does this clarify your question?

regards Stefan

PS: I refer to the example code of our last release 10.02

-- 
Stefan Kalkowski
Genode Labs Developer
http://genode-labs.com