From: hgn <hgodden00@gmail.com>
Date: Mon, 2 Sep 2024 17:28:41 +0000 (+0000)
Subject: reuse addr
X-Git-Url: https://harrygodden.com/git/?a=commitdiff_plain;h=2e74533f97344eca4b37b5793b6766788aab0426;p=u461_serv.git

reuse addr
---

diff --git a/builds2n.sh b/builds2n.sh
index a77344f..04cd1c8 100755
--- a/builds2n.sh
+++ b/builds2n.sh
@@ -1,3 +1,3 @@
 gcc -Wall -Wno-unused-function -ggdb3 -O0 -fsanitize=address servers2n.c \
-   -ls2n \
+   -ls2n -lpthread -lssl -lcrypto \
    -o bin/servers2n && bin/servers2n ; echo exit: $?
diff --git a/servers2n.c b/servers2n.c
index e93260e..28b5f58 100644
--- a/servers2n.c
+++ b/servers2n.c
@@ -77,9 +77,9 @@ static void _write_s2n_error( FILE *fp, const char *prefix )
 
 static int open_listen_socket( int port )
 {
-	int listenfd;
-	struct sockaddr_in serv_addr = {0};
-	listenfd = socket( AF_INET, SOCK_STREAM, 0 );
+   int listenfd;
+   struct sockaddr_in serv_addr = {0};
+   listenfd = socket( AF_INET, SOCK_STREAM, 0 );
 
    if( listenfd == -1 )
    {
@@ -87,25 +87,35 @@ static int open_listen_socket( int port )
       return -1;
    }
 
+   if( setsockopt( listenfd, SOL_SOCKET, SO_REUSEADDR, &(int){1}, sizeof(int) ) < 0 )
+   {
+      fprintf( stderr, "setsockopt() error: %s\n", strerror(errno) );
+      close( listenfd );
+      return -1;
+   }
+
    if( fcntl( listenfd, F_SETFL, O_NONBLOCK ) == -1 )
    {
       fprintf( stderr, "fcntl() error: %s\n", strerror(errno) );
+      close( listenfd );
       return -1;
    }
 
-	serv_addr.sin_family = AF_INET;
-	serv_addr.sin_addr.s_addr = htonl( INADDR_ANY );
-	serv_addr.sin_port = htons( port );
+   serv_addr.sin_family = AF_INET;
+   serv_addr.sin_addr.s_addr = htonl( INADDR_ANY );
+   serv_addr.sin_port = htons( port );
 
-	if( bind( listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr) ) == -1 )
+   if( bind( listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr) ) == -1 )
    {
       fprintf( stderr, "bind() error: %s\n", strerror(errno) );
+      close( listenfd );
       return -1;
    }
 
-	if( listen( listenfd, 10 ) == -1 )
+   if( listen( listenfd, 10 ) == -1 )
    {
       fprintf( stderr, "listen() error: %s\n", strerror(errno) );
+      close( listenfd );
       return -1;
    }
 
@@ -465,8 +475,8 @@ int main(int argc, char *argv[])
 
    int ticks_without_action = 0;
 
-	while( _run_server )
-	{
+   while( _run_server )
+   {
       _accept_any_new_client( listenfd, s2n_conf );
       _process_handshakes();
       _process_shutdowns();
@@ -476,7 +486,7 @@ int main(int argc, char *argv[])
       spec.tv_sec = 0;
       spec.tv_nsec = 50000000; /* 0.05s (20 tick)*/
       nanosleep( &spec, NULL );
-	}
+   }
 
    printf( "Closing active connections\n" );
    while(1)