ilikecats/stk-code_catmod
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added (somewhat experimental) code to detect the local

Browse Source 
IP address on windows (and to discover if 127.0.0.1 can
be used to connect to a client on the local machine).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/hilnius@13570 178a84e3-b1eb-0310-8ba1-8eac791a3b58
This commit is contained in:
hikerstk 2013-08-26 11:09:39 +00:00
parent 96c04daa6a
commit 7b970b643a
1 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/network/protocols/connect_to_server.cpp
View File

@ -32,6 +32,7 @@
#include "utils/log.hpp"
#ifdef WIN32
# include <iphlpapi.h>
#else
#include <ifaddrs.h>
#endif
@ -168,6 +169,7 @@ void ConnectToServer::asynchronousUpdate()
if (strcmp(data, (char*)(received_data)) == 0)
{
Log::info("ConnectToServer", "LAN Server found : %u:%u", sender.ip, sender.port);
#ifndef WIN32
// just check if the ip is ours : if so, then just use localhost (127.0.0.1)
struct ifaddrs *ifap, *ifa;
struct sockaddr_in *sa;
@ -180,7 +182,41 @@ void ConnectToServer::asynchronousUpdate()
}
}
freeifaddrs(ifap);
#else
// Query the list of all IP addresses on the local host
// First call to GetIpAddrTable with 0 bytes buffer
// will return insufficient buffer error, and size
// will contain the number of bytes needed for all
// data. Repeat the process of querying the size
// using GetIpAddrTable in a while loop since it
// can happen that an interface comes online between
// the previous call to GetIpAddrTable and the next
// call.
MIB_IPADDRTABLE *table = NULL;
unsigned long size = 0;
int error = GetIpAddrTable(table, &size, 0);
// Also add a count to limit the while loop - in
// case that something strange is going on.
int count = 0;
while(error==ERROR_INSUFFICIENT_BUFFER && count < 10)
{
delete table; // deleting NULL is legal
table = (MIB_IPADDRTABLE*)new char[size];
error = GetIpAddrTable(table, &size, 0);
count ++;
} // while insufficient buffer
for(unsigned int i=0; i<table->dwNumEntries; i++)
{
int ip = ntohl(table->table[i].dwAddr);
if(sender.ip == ip) // this interface is ours
{
sender.ip = 0x7f000001; // 127.0.0.1
break;
}
}
delete table;
#endif
m_server_address = sender;
m_state = CONNECTING;
}