From 74ef3a63ae791f8a688171568486334a73b4e7aa Mon Sep 17 00:00:00 2001
From: Roger Dingledine <arma@torproject.org>
Date: Sun, 14 Mar 2004 17:06:29 +0000
Subject: [PATCH] bugfix: decrement OR connections from global_bucket too
 bugfix: don't return immediately for has_pending_tls_data unless         the
 conn is allowed to read

svn:r1270
---
 src/or/connection.c | 10 +++++++---
 src/or/main.c       |  3 ++-
 src/or/or.h         |  3 +++
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/or/connection.c b/src/or/connection.c
index 56643fd972..50903cf362 100644
--- a/src/or/connection.c
+++ b/src/or/connection.c
@@ -494,7 +494,7 @@ void connection_bucket_decrement(connection_t *conn, int num_read) {
 /* keep a timeval to know when time has passed enough to refill buckets */
 static struct timeval current_time;
 
-void connection_bucket_init() {
+void connection_bucket_init(void) {
   tor_gettimeofday(&current_time);
   global_read_bucket = options.BandwidthBurst; /* start it at max traffic */
 }
@@ -533,6 +533,7 @@ void connection_bucket_refill(struct timeval *now) {
            conn->state != OR_CONN_STATE_OPEN ||
            conn->receiver_bucket > 0)) {
       /* and either a non-cell conn or a cell conn with non-empty bucket */
+      log_fn(LOG_DEBUG,"waking up conn (fd %d)",conn->s);
       conn->wants_to_read = 0;
       connection_start_reading(conn);
       if(conn->wants_to_write == 1) {
@@ -600,8 +601,10 @@ int connection_read_to_buf(connection_t *conn) {
   at_most = connection_bucket_read_limit(conn);
 
   if(connection_speaks_cells(conn) && conn->state != OR_CONN_STATE_CONNECTING) {
-    if(conn->state == OR_CONN_STATE_HANDSHAKING)
+    if(conn->state == OR_CONN_STATE_HANDSHAKING) {
+      /* continue handshaking even if global token bucket is empty */
       return connection_tls_continue_handshake(conn);
+    }
 
     /* else open, or closing */
     result = read_to_buf_tls(conn->tls, at_most, conn->inbuf);
@@ -616,7 +619,8 @@ int connection_read_to_buf(connection_t *conn) {
         return 0;
       case TOR_TLS_WANTREAD: /* we're already reading */
       case TOR_TLS_DONE: /* no data read, so nothing to process */
-        return 0;
+        result = 0;
+        break; /* so we call bucket_decrement below */
     }
   } else {
     result = read_to_buf(conn->s, at_most, conn->inbuf,
diff --git a/src/or/main.c b/src/or/main.c
index e3c5a5a8c6..356dbc0943 100644
--- a/src/or/main.c
+++ b/src/or/main.c
@@ -421,7 +421,8 @@ static int prepare_for_poll(void) {
 
   for(i=0;i<nfds;i++) {
     conn = connection_array[i];
-    if(connection_has_pending_tls_data(conn)) {
+    if(connection_has_pending_tls_data(conn) &&
+       connection_is_reading(conn)) {
       log_fn(LOG_DEBUG,"sock %d has pending bytes.",conn->s);
       return 0; /* has pending bytes to read; don't let poll wait. */
     }
diff --git a/src/or/or.h b/src/or/or.h
index e25a0692c3..8efbba62f3 100644
--- a/src/or/or.h
+++ b/src/or/or.h
@@ -693,6 +693,9 @@ int connection_create_listener(char *bindaddress, uint16_t bindport, int type);
 int connection_connect(connection_t *conn, char *address, uint32_t addr, uint16_t port);
 int retry_all_connections(void);
 
+void connection_bucket_init(void);
+void connection_bucket_refill(struct timeval *now);
+
 int connection_handle_read(connection_t *conn);
 int connection_read_to_buf(connection_t *conn);