Add comments, rename our struct http_data h to cookie, all clientsockets to sock, all size_t from socket_recvs to byte_count. Make signal handler set default handler for the second SIGINT

12 files changed, 174 insertions, 171 deletions

diff --git a/opentracker.c b/opentracker.c
index 91a1f79..970995a 100644
--- a/opentracker.c
+++ b/opentracker.c
@@ -48,12 +48,17 @@ static void panic( const char *routine ) {
 
 static void signal_handler( int s ) {
   if( s == SIGINT ) {
-    signal( SIGINT, SIG_IGN);
+    /* Any new interrupt signal quits the application */
+    signal( SIGINT, SIG_DFL);
+    
+    /* Tell all other threads to not acquire any new lock on a bucket
+       but cancel their operations and return */
     g_opentracker_running = 0;
 
     trackerlogic_deinit();
     exit( 0 );
   } else if( s == SIGALRM ) {
+    /* Maintain our copy of the clock. time() on BSDs is very expensive. */
     g_now_seconds = time(NULL);
     alarm(5);
   }
@@ -90,88 +95,87 @@ static void help( char *name ) {
 }
 #undef HELPLINE
 
-static void handle_dead( const int64 socket ) {
-  struct http_data* h=io_getcookie( socket );
-  if( h ) {
-    if( h->flag & STRUCT_HTTP_FLAG_IOB_USED )
-      iob_reset( &h->data.batch );
-    if( h->flag & STRUCT_HTTP_FLAG_ARRAY_USED )
-      array_reset( &h->data.request );
-    if( h->flag & STRUCT_HTTP_FLAG_WAITINGFORTASK )
-      mutex_workqueue_canceltask( socket );
-    free( h );
+static void handle_dead( const int64 sock ) {
+  struct http_data* cookie=io_getcookie( sock );
+  if( cookie ) {
+    if( cookie->flag & STRUCT_HTTP_FLAG_IOB_USED )
+      iob_reset( &cookie->data.batch );
+    if( cookie->flag & STRUCT_HTTP_FLAG_ARRAY_USED )
+      array_reset( &cookie->data.request );
+    if( cookie->flag & STRUCT_HTTP_FLAG_WAITINGFORTASK )
+      mutex_workqueue_canceltask( sock );
+    free( cookie );
   }
-  io_close( socket );
+  io_close( sock );
 }
 
-static ssize_t handle_read( const int64 clientsocket, struct ot_workstruct *ws ) {
-  struct http_data* h = io_getcookie( clientsocket );
-  ssize_t l;
+static ssize_t handle_read( const int64 sock, struct ot_workstruct *ws ) {
+  struct http_data* cookie = io_getcookie( sock );
+  ssize_t byte_count;
 
-  if( ( l = io_tryread( clientsocket, ws->inbuf, G_INBUF_SIZE ) ) <= 0 ) {
-    handle_dead( clientsocket );
+  if( ( byte_count = io_tryread( sock, ws->inbuf, G_INBUF_SIZE ) ) <= 0 ) {
+    handle_dead( sock );
     return 0;
   }
 
   /* If we get the whole request in one packet, handle it without copying */
-  if( !array_start( &h->data.request ) ) {
-    if( memchr( ws->inbuf, '\n', l ) ) {
+  if( !array_start( &cookie->data.request ) ) {
+    if( memchr( ws->inbuf, '\n', byte_count ) ) {
       ws->request = ws->inbuf;
-      ws->request_size = l;
-      return http_handle_request( clientsocket, ws );
+      ws->request_size = byte_count;
+      return http_handle_request( sock, ws );
     }
 
     /* ... else take a copy */
-    h->flag |= STRUCT_HTTP_FLAG_ARRAY_USED;
-    array_catb( &h->data.request, ws->inbuf, l );
+    cookie->flag |= STRUCT_HTTP_FLAG_ARRAY_USED;
+    array_catb( &cookie->data.request, ws->inbuf, byte_count );
     return 0;
   }
 
-  h->flag |= STRUCT_HTTP_FLAG_ARRAY_USED;
-  array_catb( &h->data.request, ws->inbuf, l );
+  array_catb( &cookie->data.request, ws->inbuf, byte_count );
 
-  if( array_failed( &h->data.request ) )
-    return http_issue_error( clientsocket, ws, CODE_HTTPERROR_500 );
+  if( array_failed( &cookie->data.request ) )
+    return http_issue_error( sock, ws, CODE_HTTPERROR_500 );
 
-  if( array_bytes( &h->data.request ) > 8192 )
-     return http_issue_error( clientsocket, ws, CODE_HTTPERROR_500 );
+  if( array_bytes( &cookie->data.request ) > 8192 )
+     return http_issue_error( sock, ws, CODE_HTTPERROR_500 );
 
-  if( !memchr( array_start( &h->data.request ), '\n', array_bytes( &h->data.request ) ) )
+  if( !memchr( array_start( &cookie->data.request ), '\n', array_bytes( &cookie->data.request ) ) )
     return 0;
 
-  ws->request      = array_start( &h->data.request );
-  ws->request_size = array_bytes( &h->data.request );
-  return http_handle_request( clientsocket, ws );
+  ws->request      = array_start( &cookie->data.request );
+  ws->request_size = array_bytes( &cookie->data.request );
+  return http_handle_request( sock, ws );
 }
 
-static void handle_write( const int64 clientsocket ) {
-  struct http_data* h=io_getcookie( clientsocket );
-  if( !h || ( iob_send( clientsocket, &h->data.batch ) <= 0 ) )
-    handle_dead( clientsocket );
+static void handle_write( const int64 sock ) {
+  struct http_data* cookie=io_getcookie( sock );
+  if( !cookie || ( iob_send( sock, &cookie->data.batch ) <= 0 ) )
+    handle_dead( sock );
 }
 
 static void handle_accept( const int64 serversocket ) {
-  struct http_data *h;
+  struct http_data *cookie;
+  int64 sock;
   ot_ip6 ip;
   uint16 port;
   tai6464 t;
-  int64 i;
 
-  while( ( i = socket_accept6( serversocket, ip, &port, NULL ) ) != -1 ) {
+  while( ( sock = socket_accept6( serversocket, ip, &port, NULL ) ) != -1 ) {
 
     /* Put fd into a non-blocking mode */
-    io_nonblock( i );
+    io_nonblock( sock );
 
-    if( !io_fd( i ) ||
-        !( h = (struct http_data*)malloc( sizeof(struct http_data) ) ) ) {
-      io_close( i );
+    if( !io_fd( sock ) ||
+        !( cookie = (struct http_data*)malloc( sizeof(struct http_data) ) ) ) {
+      io_close( sock );
       continue;
     }
-    io_setcookie( i, h );
-    io_wantread( i );
+    io_setcookie( sock, cookie );
+    io_wantread( sock );
 
-    memset(h, 0, sizeof( struct http_data ) );
-    memcpy(h->ip,ip,sizeof(ot_ip6));
+    memset(cookie, 0, sizeof( struct http_data ) );
+    memcpy(cookie->ip,ip,sizeof(ot_ip6));
 
     stats_issue_event( EVENT_ACCEPT, FLAG_TCP, (uintptr_t)ip);
 
@@ -179,7 +183,7 @@ static void handle_accept( const int64 serversocket ) {
        time this often in FreeBSD and libowfat does not allow to set unix time */
     taia_uint( &t, 0 ); /* Clear t */
     tai_unix( &(t.sec), (g_now_seconds + OT_CLIENT_TIMEOUT) );
-    io_timeout( i, t );
+    io_timeout( sock, t );
   }
 
   if( errno == EAGAIN )
@@ -202,29 +206,29 @@ static void server_mainloop( ) {
     panic( "Initializing worker failed" );
 
   for( ; ; ) {
-    int64 i;
+    int64 sock;
 
     io_wait();
 
-    while( ( i = io_canread( ) ) != -1 ) {
-      const void *cookie = io_getcookie( i );
+    while( ( sock = io_canread( ) ) != -1 ) {
+      const void *cookie = io_getcookie( sock );
       if( (intptr_t)cookie == FLAG_TCP )
-        handle_accept( i );
+        handle_accept( sock );
       else if( (intptr_t)cookie == FLAG_UDP )
-        handle_udp6( i, &ws );
+        handle_udp6( sock, &ws );
       else
-        handle_read( i, &ws );
+        handle_read( sock, &ws );
     }
 
-    while( ( i = mutex_workqueue_popresult( &iovec_entries, &iovector ) ) != -1 )
-      http_sendiovecdata( i, &ws, iovec_entries, iovector );
+    while( ( sock = mutex_workqueue_popresult( &iovec_entries, &iovector ) ) != -1 )
+      http_sendiovecdata( sock, &ws, iovec_entries, iovector );
 
-    while( ( i = io_canwrite( ) ) != -1 )
-      handle_write( i );
+    while( ( sock = io_canwrite( ) ) != -1 )
+      handle_write( sock );
 
     if( g_now_seconds > next_timeout_check ) {
-      while( ( i = io_timeouted() ) != -1 )
-        handle_dead( i );
+      while( ( sock = io_timeouted() ) != -1 )
+        handle_dead( sock );
       next_timeout_check = g_now_seconds + OT_CLIENT_TIMEOUT_CHECKINTERVAL;
     }
 
@@ -236,7 +240,7 @@ static void server_mainloop( ) {
 }
 
 static int64_t ot_try_bind( ot_ip6 ip, uint16_t port, PROTO_FLAG proto ) {
-  int64 s = proto == FLAG_TCP ? socket_tcp6( ) : socket_udp6( );
+  int64 sock = proto == FLAG_TCP ? socket_tcp6( ) : socket_udp6( );
 
 #ifndef WANT_V6
   if( !ip6_isv4mapped(ip) ) {
@@ -257,24 +261,24 @@ static int64_t ot_try_bind( ot_ip6 ip, uint16_t port, PROTO_FLAG proto ) {
   fputs( _debug, stderr );
 #endif
   
-  if( socket_bind6_reuse( s, ip, port, 0 ) == -1 )
+  if( socket_bind6_reuse( sock, ip, port, 0 ) == -1 )
     panic( "socket_bind6_reuse" );
 
-  if( ( proto == FLAG_TCP ) && ( socket_listen( s, SOMAXCONN) == -1 ) )
+  if( ( proto == FLAG_TCP ) && ( socket_listen( sock, SOMAXCONN) == -1 ) )
     panic( "socket_listen" );
 
-  if( !io_fd( s ) )
+  if( !io_fd( sock ) )
     panic( "io_fd" );
 
-  io_setcookie( s, (void*)proto );
+  io_setcookie( sock, (void*)proto );
 
-  io_wantread( s );
+  io_wantread( sock );
 
 #ifdef _DEBUG
   fputs( " success.\n", stderr);
 #endif
 
-  return s;
+  return sock;
 }
 
 char * set_config_option( char **option, char *value ) {
diff --git a/ot_clean.c b/ot_clean.c
index 6ce1941..82b778b 100644
--- a/ot_clean.c
+++ b/ot_clean.c
@@ -6,6 +6,7 @@
 /* System */
 #include <pthread.h>
 #include <unistd.h>
+#include <string.h>
 
 /* Libowfat */
 #include "io.h"
diff --git a/ot_fullscrape.c b/ot_fullscrape.c
index 17405b7..4cd0a44 100644
--- a/ot_fullscrape.c
+++ b/ot_fullscrape.c
@@ -80,8 +80,8 @@ void fullscrape_deinit( ) {
   pthread_cancel( thread_id );
 }
 
-void fullscrape_deliver( int64 socket, ot_tasktype tasktype ) {
-  mutex_workqueue_pushtask( socket, tasktype );
+void fullscrape_deliver( int64 sock, ot_tasktype tasktype ) {
+  mutex_workqueue_pushtask( sock, tasktype );
 }
 
 static int fullscrape_increase( int *iovec_entries, struct iovec **iovector,
diff --git a/ot_fullscrape.h b/ot_fullscrape.h
index 3f5dc7d..b86f8ea 100644
--- a/ot_fullscrape.h
+++ b/ot_fullscrape.h
@@ -10,7 +10,7 @@
 
 void fullscrape_init( );
 void fullscrape_deinit( );
-void fullscrape_deliver( int64 socket, ot_tasktype tasktype );
+void fullscrape_deliver( int64 sock, ot_tasktype tasktype );
 
 #else
 
diff --git a/ot_http.c b/ot_http.c
index 08ecc13..3ccdb84 100644
--- a/ot_http.c
+++ b/ot_http.c
@@ -35,50 +35,50 @@ enum {
   SUCCESS_HTTP_HEADER_LENGTH_CONTENT_ENCODING = 32,
   SUCCESS_HTTP_SIZE_OFF = 17 };
 
-static void http_senddata( const int64 client_socket, struct ot_workstruct *ws ) {
-  struct http_data *h = io_getcookie( client_socket );
+static void http_senddata( const int64 sock, struct ot_workstruct *ws ) {
+  struct http_data *cookie = io_getcookie( sock );
   ssize_t written_size;
 
   /* whoever sends data is not interested in its input-array */
-  if( h && ( h->flag & STRUCT_HTTP_FLAG_ARRAY_USED ) ) {
-    h->flag &= ~STRUCT_HTTP_FLAG_ARRAY_USED;
-    array_reset( &h->data.request );
+  if( cookie && ( cookie->flag & STRUCT_HTTP_FLAG_ARRAY_USED ) ) {
+    cookie->flag &= ~STRUCT_HTTP_FLAG_ARRAY_USED;
+    array_reset( &cookie->data.request );
   }
 
-  written_size = write( client_socket, ws->reply, ws->reply_size );
+  written_size = write( sock, ws->reply, ws->reply_size );
   if( ( written_size < 0 ) || ( written_size == ws->reply_size ) ) {
-    free( h ); io_close( client_socket );
+    free( cookie ); io_close( sock );
   } else {
     char * outbuf;
     tai6464 t;
 
-    if( !h ) return;
+    if( !cookie ) return;
     if( !( outbuf =  malloc( ws->reply_size - written_size ) ) ) {
-      free(h); io_close( client_socket );
+      free(cookie); io_close( sock );
       return;
     }
 
-    iob_reset( &h->data.batch );
+    iob_reset( &cookie->data.batch );
     memcpy( outbuf, ws->reply + written_size, ws->reply_size - written_size );
-    iob_addbuf_free( &h->data.batch, outbuf, ws->reply_size - written_size );
-    h->flag |= STRUCT_HTTP_FLAG_IOB_USED;
+    iob_addbuf_free( &cookie->data.batch, outbuf, ws->reply_size - written_size );
+    cookie->flag |= STRUCT_HTTP_FLAG_IOB_USED;
 
     /* writeable short data sockets just have a tcp timeout */
-    taia_uint( &t, 0 ); io_timeout( client_socket, t );
-    io_dontwantread( client_socket );
-    io_wantwrite( client_socket );
+    taia_uint( &t, 0 ); io_timeout( sock, t );
+    io_dontwantread( sock );
+    io_wantwrite( sock );
   }
 }
 
-#define HTTPERROR_302            return http_issue_error( client_socket, ws, CODE_HTTPERROR_302 )
-#define HTTPERROR_400            return http_issue_error( client_socket, ws, CODE_HTTPERROR_400 )
-#define HTTPERROR_400_PARAM      return http_issue_error( client_socket, ws, CODE_HTTPERROR_400_PARAM )
-#define HTTPERROR_400_COMPACT    return http_issue_error( client_socket, ws, CODE_HTTPERROR_400_COMPACT )
-#define HTTPERROR_400_DOUBLEHASH return http_issue_error( client_socket, ws, CODE_HTTPERROR_400_PARAM )
-#define HTTPERROR_403_IP         return http_issue_error( client_socket, ws, CODE_HTTPERROR_403_IP )
-#define HTTPERROR_404            return http_issue_error( client_socket, ws, CODE_HTTPERROR_404 )
-#define HTTPERROR_500            return http_issue_error( client_socket, ws, CODE_HTTPERROR_500 )
-ssize_t http_issue_error( const int64 client_socket, struct ot_workstruct *ws, int code ) {
+#define HTTPERROR_302            return http_issue_error( sock, ws, CODE_HTTPERROR_302 )
+#define HTTPERROR_400            return http_issue_error( sock, ws, CODE_HTTPERROR_400 )
+#define HTTPERROR_400_PARAM      return http_issue_error( sock, ws, CODE_HTTPERROR_400_PARAM )
+#define HTTPERROR_400_COMPACT    return http_issue_error( sock, ws, CODE_HTTPERROR_400_COMPACT )
+#define HTTPERROR_400_DOUBLEHASH return http_issue_error( sock, ws, CODE_HTTPERROR_400_PARAM )
+#define HTTPERROR_403_IP         return http_issue_error( sock, ws, CODE_HTTPERROR_403_IP )
+#define HTTPERROR_404            return http_issue_error( sock, ws, CODE_HTTPERROR_404 )
+#define HTTPERROR_500            return http_issue_error( sock, ws, CODE_HTTPERROR_500 )
+ssize_t http_issue_error( const int64 sock, struct ot_workstruct *ws, int code ) {
   char *error_code[] = { "302 Found", "400 Invalid Request", "400 Invalid Request", "400 Invalid Request",
                          "403 Access Denied", "404 Not Found", "500 Internal Server Error" };
   char *title = error_code[code];
@@ -93,32 +93,32 @@ ssize_t http_issue_error( const int64 client_socket, struct ot_workstruct *ws, i
   fprintf( stderr, "DEBUG: invalid request was: %s\n", ws->debugbuf );
 #endif
   stats_issue_event( EVENT_FAILED, FLAG_TCP, code );
-  http_senddata( client_socket, ws );
+  http_senddata( sock, ws );
   return ws->reply_size = -2;
 }
 
-ssize_t http_sendiovecdata( const int64 client_socket, struct ot_workstruct *ws, int iovec_entries, struct iovec *iovector ) {
-  struct http_data *h = io_getcookie( client_socket );
+ssize_t http_sendiovecdata( const int64 sock, struct ot_workstruct *ws, int iovec_entries, struct iovec *iovector ) {
+  struct http_data *cookie = io_getcookie( sock );
   char *header;
   int i;
   size_t header_size, size = iovec_length( &iovec_entries, &iovector );
   tai6464 t;
 
   /* No cookie? Bad socket. Leave. */
-  if( !h ) {
+  if( !cookie ) {
     iovec_free( &iovec_entries, &iovector );
     HTTPERROR_500;
   }
 
   /* If this socket collected request in a buffer,
      free it now */
-  if( h->flag & STRUCT_HTTP_FLAG_ARRAY_USED ) {
-    h->flag &= ~STRUCT_HTTP_FLAG_ARRAY_USED;
-    array_reset( &h->data.request );
+  if( cookie->flag & STRUCT_HTTP_FLAG_ARRAY_USED ) {
+    cookie->flag &= ~STRUCT_HTTP_FLAG_ARRAY_USED;
+    array_reset( &cookie->data.request );
   }
 
   /* If we came here, wait for the answer is over */
-  h->flag &= ~STRUCT_HTTP_FLAG_WAITINGFORTASK;
+  cookie->flag &= ~STRUCT_HTTP_FLAG_WAITINGFORTASK;
 
   /* Our answers never are 0 vectors. Return an error. */
   if( !iovec_entries ) {
@@ -132,32 +132,32 @@ ssize_t http_sendiovecdata( const int64 client_socket, struct ot_workstruct *ws,
     HTTPERROR_500;
   }
 
-  if( h->flag & STRUCT_HTTP_FLAG_GZIP )
+  if( cookie->flag & STRUCT_HTTP_FLAG_GZIP )
     header_size = sprintf( header, "HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\nContent-Encoding: gzip\r\nContent-Length: %zd\r\n\r\n", size );
-  else if( h->flag & STRUCT_HTTP_FLAG_BZIP2 )
+  else if( cookie->flag & STRUCT_HTTP_FLAG_BZIP2 )
     header_size = sprintf( header, "HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\nContent-Encoding: bzip2\r\nContent-Length: %zd\r\n\r\n", size );
   else
     header_size = sprintf( header, "HTTP/1.0 200 OK\r\nContent-Type: text/plain\r\nContent-Length: %zd\r\n\r\n", size );
 
-  iob_reset( &h->data.batch );
-  iob_addbuf_free( &h->data.batch, header, header_size );
+  iob_reset( &cookie->data.batch );
+  iob_addbuf_free( &cookie->data.batch, header, header_size );
 
   /* Will move to ot_iovec.c */
   for( i=0; i<iovec_entries; ++i )
-    iob_addbuf_munmap( &h->data.batch, iovector[i].iov_base, iovector[i].iov_len );
+    iob_addbuf_munmap( &cookie->data.batch, iovector[i].iov_base, iovector[i].iov_len );
   free( iovector );
 
-  h->flag |= STRUCT_HTTP_FLAG_IOB_USED;
+  cookie->flag |= STRUCT_HTTP_FLAG_IOB_USED;
 
   /* writeable sockets timeout after 10 minutes */
   taia_now( &t ); taia_addsec( &t, &t, OT_CLIENT_TIMEOUT_SEND );
-  io_timeout( client_socket, t );
-  io_dontwantread( client_socket );
-  io_wantwrite( client_socket );
+  io_timeout( sock, t );
+  io_dontwantread( sock );
+  io_wantwrite( sock );
   return 0;
 }
 
-static ssize_t http_handle_stats( const int64 client_socket, struct ot_workstruct *ws, char *read_ptr ) {
+static ssize_t http_handle_stats( const int64 sock, struct ot_workstruct *ws, char *read_ptr ) {
 static const ot_keywords keywords_main[] =
   { { "mode", 1 }, {"format", 2 }, { NULL, -3 } };
 static const ot_keywords keywords_mode[] =
@@ -173,9 +173,9 @@ static const ot_keywords keywords_format[] =
   int mode = TASK_STATS_PEERS, scanon = 1, format = 0;
 
 #ifdef WANT_RESTRICT_STATS
-  struct http_data *h = io_getcookie( client_socket );
+  struct http_data *cookie = io_getcookie( sock );
 
-  if( !h || !accesslist_isblessed( h->ip, OT_PERMISSION_MAY_STAT ) )
+  if( !cookie || !accesslist_isblessed( cookie->ip, OT_PERMISSION_MAY_STAT ) )
     HTTPERROR_403_IP;
 #endif
 
@@ -195,22 +195,22 @@ static const ot_keywords keywords_format[] =
 
 #ifdef WANT_FULLSCRAPE
   if( mode == TASK_STATS_TPB ) {
-    struct http_data* h = io_getcookie( client_socket );
+    struct http_data* cookie = io_getcookie( sock );
     tai6464 t;
 #ifdef WANT_COMPRESSION_GZIP
     ws->request[ws->request_size] = 0;
     if( strstr( read_ptr - 1, "gzip" ) ) {
-      h->flag |= STRUCT_HTTP_FLAG_GZIP;
+      cookie->flag |= STRUCT_HTTP_FLAG_GZIP;
       format |= TASK_FLAG_GZIP;
     }
 #endif
     /* Pass this task to the worker thread */
-    h->flag |= STRUCT_HTTP_FLAG_WAITINGFORTASK;
+    cookie->flag |= STRUCT_HTTP_FLAG_WAITINGFORTASK;
 
     /* Clients waiting for us should not easily timeout */
-    taia_uint( &t, 0 ); io_timeout( client_socket, t );
-    fullscrape_deliver( client_socket, format );
-    io_dontwantread( client_socket );
+    taia_uint( &t, 0 ); io_timeout( sock, t );
+    fullscrape_deliver( sock, format );
+    io_dontwantread( sock );
     return ws->reply_size = -2;
   }
 #endif
@@ -219,8 +219,8 @@ static const ot_keywords keywords_format[] =
   if( ( mode & TASK_CLASS_MASK ) == TASK_STATS ) {
     tai6464 t;
     /* Complex stats also include expensive memory debugging tools */
-    taia_uint( &t, 0 ); io_timeout( client_socket, t );
-    stats_deliver( client_socket, mode );
+    taia_uint( &t, 0 ); io_timeout( sock, t );
+    stats_deliver( sock, mode );
     return ws->reply_size = -2;
   }
 
@@ -231,36 +231,36 @@ static const ot_keywords keywords_format[] =
 }
 
 #ifdef WANT_FULLSCRAPE
-static ssize_t http_handle_fullscrape( const int64 client_socket, struct ot_workstruct *ws ) {
-  struct http_data* h = io_getcookie( client_socket );
+static ssize_t http_handle_fullscrape( const int64 sock, struct ot_workstruct *ws ) {
+  struct http_data* cookie = io_getcookie( sock );
   int format = 0;
   tai6464 t;
 
 #ifdef WANT_COMPRESSION_GZIP
   ws->request[ws->request_size-1] = 0;
   if( strstr( ws->request, "gzip" ) ) {
-    h->flag |= STRUCT_HTTP_FLAG_GZIP;
+    cookie->flag |= STRUCT_HTTP_FLAG_GZIP;
     format = TASK_FLAG_GZIP;
-    stats_issue_event( EVENT_FULLSCRAPE_REQUEST_GZIP, 0, (uintptr_t)h->ip );
+    stats_issue_event( EVENT_FULLSCRAPE_REQUEST_GZIP, 0, (uintptr_t)cookie->ip );
   } else
 #endif
-    stats_issue_event( EVENT_FULLSCRAPE_REQUEST, 0, (uintptr_t)h->ip );
+    stats_issue_event( EVENT_FULLSCRAPE_REQUEST, 0, (uintptr_t)cookie->ip );
 
 #ifdef _DEBUG_HTTPERROR
 write( 2, ws->debugbuf, G_DEBUGBUF_SIZE );
 #endif
 
   /* Pass this task to the worker thread */
-  h->flag |= STRUCT_HTTP_FLAG_WAITINGFORTASK;
+  cookie->flag |= STRUCT_HTTP_FLAG_WAITINGFORTASK;
   /* Clients waiting for us should not easily timeout */
-  taia_uint( &t, 0 ); io_timeout( client_socket, t );
-  fullscrape_deliver( client_socket, TASK_FULLSCRAPE | format );
-  io_dontwantread( client_socket );
+  taia_uint( &t, 0 ); io_timeout( sock, t );
+  fullscrape_deliver( sock, TASK_FULLSCRAPE | format );
+  io_dontwantread( sock );
   return ws->reply_size = -2;
 }
 #endif
 
-static ssize_t http_handle_scrape( const int64 client_socket, struct ot_workstruct *ws, char *read_ptr ) {
+static ssize_t http_handle_scrape( const int64 sock, struct ot_workstruct *ws, char *read_ptr ) {
   static const ot_keywords keywords_scrape[] = { { "info_hash", 1 }, { NULL, -3 } };
 
   ot_hash * multiscrape_buf = (ot_hash*)ws->request;
@@ -305,7 +305,7 @@ static ot_keywords keywords_announce[] = { { "port", 1 }, { "left", 2 }, { "even
 #endif
 { NULL, -3 } };
 static ot_keywords keywords_announce_event[] = { { "completed", 1 }, { "stopped", 2 }, { NULL, -3 } };
-static ssize_t http_handle_announce( const int64 client_socket, struct ot_workstruct *ws, char *read_ptr ) {
+static ssize_t http_handle_announce( const int64 sock, struct ot_workstruct *ws, char *read_ptr ) {
   int            numwant, tmp, scanon;
   ot_peer        peer;
   ot_hash       *hash = NULL;
@@ -320,7 +320,7 @@ static ssize_t http_handle_announce( const int64 client_socket, struct ot_workst
     ++read_ptr;
   }
 
-  OT_SETIP( &peer, ((struct http_data*)io_getcookie( client_socket ) )->ip );
+  OT_SETIP( &peer, ((struct http_data*)io_getcookie( sock ) )->ip );
   OT_SETPORT( &peer, &port );
   OT_PEERFLAG( &peer ) = 0;
   numwant = 50;
@@ -400,7 +400,7 @@ static ssize_t http_handle_announce( const int64 client_socket, struct ot_workst
   return ws->reply_size;
 }
 
-ssize_t http_handle_request( const int64 client_socket, struct ot_workstruct *ws ) {
+ssize_t http_handle_request( const int64 sock, struct ot_workstruct *ws ) {
   ssize_t reply_off, len;
   char   *read_ptr = ws->request, *write_ptr;
 
@@ -433,17 +433,17 @@ ssize_t http_handle_request( const int64 client_socket, struct ot_workstruct *ws
 
   /* This is the hardcore match for announce*/
   if( ( *write_ptr == 'a' ) || ( *write_ptr == '?' ) )
-    http_handle_announce( client_socket, ws, read_ptr );
+    http_handle_announce( sock, ws, read_ptr );
 #ifdef WANT_FULLSCRAPE
   else if( !memcmp( write_ptr, "scrape HTTP/", 12 ) )
-    http_handle_fullscrape( client_socket, ws );
+    http_handle_fullscrape( sock, ws );
 #endif
   /* This is the hardcore match for scrape */
   else if( !memcmp( write_ptr, "sc", 2 ) )
-    http_handle_scrape( client_socket, ws, read_ptr );
+    http_handle_scrape( sock, ws, read_ptr );
   /* All the rest is matched the standard way */
   else if( !memcmp( write_ptr, "stats", 5) )
-    http_handle_stats( client_socket, ws, read_ptr );
+    http_handle_stats( sock, ws, read_ptr );
   else
     HTTPERROR_404;
 
@@ -469,7 +469,7 @@ ssize_t http_handle_request( const int64 client_socket, struct ot_workstruct *ws
   /* 3. Finally we join both blocks neatly */
   ws->outbuf[ SUCCESS_HTTP_HEADER_LENGTH - 1 ] = '\n';
   
-  http_senddata( client_socket, ws );
+  http_senddata( sock, ws );
   return ws->reply_size;
 }
 
diff --git a/ot_livesync.h b/ot_livesync.h
index 8e78afb..fe9d122 100644
--- a/ot_livesync.h
+++ b/ot_livesync.h
@@ -94,7 +94,7 @@ void livesync_tell( ot_hash const info_hash, const ot_peer * const peer );
 void livesync_ticker( );
 
 /* Handle an incoming live sync packet */
-void handle_livesync( const int64 serversocket );
+void handle_livesync( const int64 sock );
 
 #else
 
diff --git a/ot_mutex.c b/ot_mutex.c
index 36de5ff..2ed5e81 100644
--- a/ot_mutex.c
+++ b/ot_mutex.c
@@ -113,7 +113,7 @@ size_t mutex_get_torrent_count( ) {
 struct ot_task {
   ot_taskid       taskid;
   ot_tasktype     tasktype;
-  int64           socket;
+  int64           sock;
   int             iovec_entries;
   struct iovec   *iovec;
   struct ot_task *next;
@@ -124,7 +124,7 @@ static struct ot_task *tasklist = NULL;
 static pthread_mutex_t tasklist_mutex;
 static pthread_cond_t tasklist_being_filled;
 
-int mutex_workqueue_pushtask( int64 socket, ot_tasktype tasktype ) {
+int mutex_workqueue_pushtask( int64 sock, ot_tasktype tasktype ) {
   struct ot_task ** tmptask, * task;
 
   /* Want exclusive access to tasklist */
@@ -148,7 +148,7 @@ int mutex_workqueue_pushtask( int64 socket, ot_tasktype tasktype ) {
 
   task->taskid        = 0;
   task->tasktype      = tasktype;
-  task->socket        = socket;
+  task->sock          = sock;
   task->iovec_entries = 0;
   task->iovec         = NULL;
   task->next          = 0;
@@ -162,7 +162,7 @@ int mutex_workqueue_pushtask( int64 socket, ot_tasktype tasktype ) {
   return 0;
 }
 
-void mutex_workqueue_canceltask( int64 socket ) {
+void mutex_workqueue_canceltask( int64 sock ) {
   struct ot_task ** task;
 
   /* Want exclusive access to tasklist */
@@ -171,10 +171,10 @@ void mutex_workqueue_canceltask( int64 socket ) {
   MTX_DBG( "canceltask locked.\n" );
 
   task = &tasklist;
-  while( *task && ( (*task)->socket != socket ) )
+  while( *task && ( (*task)->sock != sock ) )
     *task = (*task)->next;
 
-  if( *task && ( (*task)->socket == socket ) ) {
+  if( *task && ( (*task)->sock == sock ) ) {
     struct iovec *iovec = (*task)->iovec;
     struct ot_task *ptask = *task;
     int i;
@@ -281,7 +281,7 @@ int mutex_workqueue_pushresult( ot_taskid taskid, int iovec_entries, struct iove
 
 int64 mutex_workqueue_popresult( int *iovec_entries, struct iovec ** iovec ) {
   struct ot_task ** task;
-  int64 socket = -1;
+  int64 sock = -1;
 
   /* Want exclusive access to tasklist */
   MTX_DBG( "popresult locks.\n" );
@@ -297,7 +297,7 @@ int64 mutex_workqueue_popresult( int *iovec_entries, struct iovec ** iovec ) {
 
     *iovec_entries = (*task)->iovec_entries;
     *iovec         = (*task)->iovec;
-    socket         = (*task)->socket;
+    sock           = (*task)->sock;
 
     *task = (*task)->next;
     free( ptask );
@@ -307,7 +307,7 @@ int64 mutex_workqueue_popresult( int *iovec_entries, struct iovec ** iovec ) {
   MTX_DBG( "popresult unlocks.\n" );
   pthread_mutex_unlock( &tasklist_mutex );
   MTX_DBG( "popresult unlocked.\n" );
-  return socket;
+  return sock;
 }
 
 void mutex_init( ) {
diff --git a/ot_mutex.h b/ot_mutex.h
index 16b25a0..85653ce 100644
--- a/ot_mutex.h
+++ b/ot_mutex.h
@@ -59,8 +59,8 @@ typedef enum {
 
 typedef unsigned long ot_taskid;
 
-int       mutex_workqueue_pushtask( int64 socket, ot_tasktype tasktype );
-void      mutex_workqueue_canceltask( int64 socket );
+int       mutex_workqueue_pushtask( int64 sock, ot_tasktype tasktype );
+void      mutex_workqueue_canceltask( int64 sock );
 void      mutex_workqueue_pushsuccess( ot_taskid taskid );
 ot_taskid mutex_workqueue_poptask( ot_tasktype *tasktype );
 int       mutex_workqueue_pushresult( ot_taskid taskid, int iovec_entries, struct iovec *iovector );
diff --git a/ot_stats.c b/ot_stats.c
index 30a599c..8de1a52 100644
--- a/ot_stats.c
+++ b/ot_stats.c
@@ -611,8 +611,8 @@ static void * stats_worker( void * args ) {
   return NULL;
 }
 
-void stats_deliver( int64 socket, int tasktype ) {
-  mutex_workqueue_pushtask( socket, tasktype );
+void stats_deliver( int64 sock, int tasktype ) {
+  mutex_workqueue_pushtask( sock, tasktype );
 }
 
 static pthread_t thread_id;
diff --git a/ot_stats.h b/ot_stats.h
index 7cb0c06..b8a64a1 100644
--- a/ot_stats.h
+++ b/ot_stats.h
@@ -33,7 +33,7 @@ enum {
 };
 
 void   stats_issue_event( ot_status_event event, PROTO_FLAG proto, uintptr_t event_data );
-void   stats_deliver( int64 socket, int tasktype );
+void   stats_deliver( int64 sock, int tasktype );
 size_t return_stats_for_tracker( char *reply, int mode, int format );
 size_t stats_return_tracker_version( char *reply );
 void   stats_init( );
diff --git a/ot_udp.c b/ot_udp.c
index 2ea76dd..52d4fba 100644
--- a/ot_udp.c
+++ b/ot_udp.c
@@ -44,15 +44,15 @@ void handle_udp6( int64 serversocket, struct ot_workstruct *ws ) {
   uint32_t   *outpacket = (uint32_t*)ws->outbuf;
   uint32_t    numwant, left, event, scopeid;
   uint16_t    port, remoteport;
-  size_t      r, r_out;
+  size_t      byte_count, scrape_count;
 
-  r = socket_recv6( serversocket, ws->inbuf, G_INBUF_SIZE, remoteip, &remoteport, &scopeid );
+  byte_count = socket_recv6( serversocket, ws->inbuf, G_INBUF_SIZE, remoteip, &remoteport, &scopeid );
 
   stats_issue_event( EVENT_ACCEPT, FLAG_UDP, (uintptr_t)remoteip );
-  stats_issue_event( EVENT_READ, FLAG_UDP, r );
+  stats_issue_event( EVENT_READ, FLAG_UDP, byte_count );
 
   /* Minimum udp tracker packet size, also catches error */
-  if( r < 16 )
+  if( byte_count < 16 )
     return;
 
   switch( ntohl( inpacket[2] ) ) {
@@ -70,7 +70,7 @@ void handle_udp6( int64 serversocket, struct ot_workstruct *ws ) {
       break;
     case 1: /* This is an announce action */
       /* Minimum udp announce packet size */
-      if( r < 98 )
+      if( byte_count < 98 )
         return;
 
       if( !udp_test_connectionid( inpacket, remoteip ))
@@ -103,12 +103,12 @@ void handle_udp6( int64 serversocket, struct ot_workstruct *ws ) {
       outpacket[1] = inpacket[12/4];
 
       if( OT_PEERFLAG( &peer ) & PEER_FLAG_STOPPED ) /* Peer is gone. */
-        r = remove_peer_from_torrent( *hash, &peer, ws->outbuf, FLAG_UDP );
+        byte_count = remove_peer_from_torrent( *hash, &peer, ws->outbuf, FLAG_UDP );
       else
-        r = 8 + add_peer_to_torrent_and_return_peers( *hash, &peer, FLAG_UDP, numwant, ((char*)outpacket) + 8 );
+        byte_count = 8 + add_peer_to_torrent_and_return_peers( *hash, &peer, FLAG_UDP, numwant, ((char*)outpacket) + 8 );
 
-      socket_send6( serversocket, ws->outbuf, r, remoteip, remoteport, 0 );
-      stats_issue_event( EVENT_ANNOUNCE, FLAG_UDP, r );
+      socket_send6( serversocket, ws->outbuf, byte_count, remoteip, remoteport, 0 );
+      stats_issue_event( EVENT_ANNOUNCE, FLAG_UDP, byte_count );
       break;
 
     case 2: /* This is a scrape action */
@@ -118,11 +118,11 @@ void handle_udp6( int64 serversocket, struct ot_workstruct *ws ) {
       outpacket[0] = htonl( 2 );    /* scrape action */
       outpacket[1] = inpacket[12/4];
 
-      for( r_out = 0; ( r_out * 20 < r - 16) && ( r_out <= 74 ); r_out++ )
-        return_udp_scrape_for_torrent( *(ot_hash*)( ((char*)inpacket) + 16 + 20 * r_out ), ((char*)outpacket) + 8 + 12 * r_out );
+      for( scrape_count = 0; ( scrape_count * 20 < byte_count - 16) && ( scrape_count <= 74 ); scrape_count++ )
+        return_udp_scrape_for_torrent( *(ot_hash*)( ((char*)inpacket) + 16 + 20 * scrape_count ), ((char*)outpacket) + 8 + 12 * scrape_count );
 
-      socket_send6( serversocket, ws->outbuf, 8 + 12 * r_out, remoteip, remoteport, 0 );
-      stats_issue_event( EVENT_SCRAPE, FLAG_UDP, r );
+      socket_send6( serversocket, ws->outbuf, 8 + 12 * scrape_count, remoteip, remoteport, 0 );
+      stats_issue_event( EVENT_SCRAPE, FLAG_UDP, scrape_count );
       break;
   }
 }
diff --git a/ot_vector.c b/ot_vector.c
index a69d9a5..cbb3fac 100644
--- a/ot_vector.c
+++ b/ot_vector.c
@@ -23,8 +23,6 @@ static int vector_compare_peer(const void *peer1, const void *peer2 ) {
 /* This function gives us a binary search that returns a pointer, even if
    no exact match is found. In that case it sets exactmatch 0 and gives
    calling functions the chance to insert data
-
-   NOTE: Minimal compare_size is 4, member_size must be a multiple of 4
 */
 void *binary_search( const void * const key, const void * base, const size_t member_count, const size_t member_size,
                      size_t compare_size, int *exactmatch ) {