izackp/mosh
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Temporarily connect socket to get Path MTU

Browse Source
This commit is contained in:
Keith Winstein
2011-08-13 19:14:14 -04:00
parent d6e7f69a4b
commit f2f0cd574a
1 changed files with 13 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
network.cpp
+13 -1
View File
@@ -136,6 +136,11 @@ Connection::Connection( const char *key_str, const char *ip, int port ) /* clien
void Connection::update_MTU( void ) void Connection::update_MTU( void )
{ {
/* Temporarily connect socket so we can retrieve path MTU */
if ( connect( sock, (sockaddr *)&remote_addr, sizeof( remote_addr ) ) < 0 ) {
throw NetworkException( "connect", errno );
}
socklen_t optlen = sizeof( MTU ); socklen_t optlen = sizeof( MTU );
if ( getsockopt( sock, IPPROTO_IP, IP_MTU, &MTU, &optlen ) < 0 ) { if ( getsockopt( sock, IPPROTO_IP, IP_MTU, &MTU, &optlen ) < 0 ) {
throw NetworkException( "getsockopt", errno ); throw NetworkException( "getsockopt", errno );
@@ -145,7 +150,14 @@ void Connection::update_MTU( void )
throw NetworkException( "Error getting path MTU", errno ); throw NetworkException( "Error getting path MTU", errno );
} }
fprintf( stderr, "Path MTU: %d\n", MTU ); /* Disconnect socket */
struct sockaddr disconnect;
disconnect.sa_family = AF_UNSPEC;
if ( connect( sock, (sockaddr *)&disconnect, sizeof( disconnect ) ) < 0 ) {
throw NetworkException( "connect", errno );
}
} }
void Connection::send( string &s, bool send_timestamp ) void Connection::send( string &s, bool send_timestamp )