Kim Rinnewitz reported that --local-port didn't work with TFTP transfers.

This happened because the tftp code always uncondionally did a bind()
without caring if one already had been done and then it failed. I wrote a
test case (1009) to verify this, but it is a bit error-prone since it will
have to pick a fixed local port number and since the tests are run on so
many different hosts in different situations I add it in disabled state.

CHANGES

@@ -6,8 +6,18 @@
 
                                   Changelog
 
+Daniel S (4 October 2007)
+- Kim Rinnewitz reported that --local-port didn't work with TFTP transfers.
+  This happened because the tftp code always uncondionally did a bind()
+  without caring if one already had been done and then it failed. I wrote a
+  test case (1009) to verify this, but it is a bit error-prone since it will
+  have to pick a fixed local port number and since the tests are run on so
+  many different hosts in different situations I'll add it in disabled state.
+
+Yang Tse (3 October 2007)
+- Fixed issue related with the use of ares_timeout() result.
+
 Daniel S (3 October 2007)
-- Yang Tse, fix issue related with the use of ares_timeout() result.
 
 - Alexey Pesternikov introduced CURLOPT_OPENSOCKETFUNCTION and
   CURLOPT_OPENSOCKETDATA to set a callback that allows an application to

RELEASE-NOTES

@@ -34,6 +34,7 @@ This release includes the following bugfixes:
  o curl_easy_escape() problem with byte values >= 128
  o handles chunked-encoded CONNECT responses
  o misuse of ares_timeout() result
+ o --local-port on TFTP transfers
 
 This release includes the following known bugs:
 
@@ -52,6 +53,6 @@ advice from friends like these:
 
  Dan Fandrich, Michal Marek, Günter Knauf, Rob Crittenden, Immanuel Gregoire,
  Mark Davies, Max Katsev, Philip Langdale, Alex Fishman, Johnny Luong,
- Alexey Pesternikov, Yang Tse
+ Alexey Pesternikov, Yang Tse, Kim Rinnewitz
  
         Thanks! (and sorry if I forgot to mention someone)

lib/connect.c

@@ -380,6 +380,7 @@ static CURLcode bindlocal(struct connectdata *conn,
         port = ntohs(((struct sockaddr_in6 *)&add)->sin6_port);
 #endif
       infof(data, "Local port: %d\n", port);
+      conn->bits.bound = TRUE;
       return CURLE_OK;
     }
     if(--portnum > 0) {

lib/tftp.c

@@ -598,9 +598,9 @@ CURLcode Curl_tftp_connect(struct connectdata *conn, bool *done)
 
   tftp_set_timeouts(state);
 
-  if(!conn->bits.reuse) {
+  if(!conn->bits.bound) {
-    /* If not reused, bind to any interface, random UDP port. If it is reused,
+    /* If not already bound, bind to any interface, random UDP port. If it is
-     * this has already been done!
+     * reused or a custom local port was desired, this has already been done!
      *
      * We once used the size of the local_addr struct as the third argument for
      * bind() to better work with IPv6 or whatever size the struct could have,
@@ -619,6 +619,7 @@ CURLcode Curl_tftp_connect(struct connectdata *conn, bool *done)
             Curl_strerror(conn, SOCKERRNO));
       return CURLE_COULDNT_CONNECT;
     }
+    conn->bits.bound = TRUE;
   }
 
   Curl_pgrsStartNow(conn->data);

lib/urldata.h

@@ -609,6 +609,8 @@ struct ConnectBits {
   bool proxy_connect_closed; /* set true if a proxy disconnected the
                                 connection in a CONNECT request with auth, so
                                 that libcurl should reconnect and continue. */
+  bool bound; /* set true if bind() has already been done on this socket/
+                 connection */
 };
 
 struct hostname {

tests/data/DISABLED

@@ -3,5 +3,4 @@
 # test cases are run by runtests.pl. Just add the plain test case numbers, one
 # per line.
 # Lines starting with '#' letters are treated as comments.
-#230
+1009
-

tests/data/Makefile.am

@@ -45,7 +45,7 @@ EXTRA_DIST = test1 test108 test117 test127 test20 test27 test34 test46	   \
  test706 test707 test350 test351 test352 test353 test289 test540 test354   \
  test231 test1000 test1001 test1002 test1003 test1004 test1005 test1006    \
  test615 test1007 test541 test1010 test1011 test1012 test542 test543       \
- test536 test1008
+ test536 test1008 test1009
 
 filecheck:
 	@mkdir test-place; \

tests/data/test1009

@@ -0,0 +1,43 @@
+<testcase>
+<info>
+<keywords>
+TFTP
+TFTP RRQ
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+a chunk of
+data
+returned
+ to client
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+tftp
+</server>
+ <name>
+TFTP retrieve
+ </name>
+ <command>
+tftp://%HOSTIP:%TFTPPORT//1009 --local-port 44444
+</command>
+</client>
+
+#
+# Verify pseudo protocol after the test has been "shot"
+<verify>
+<protocol>
+opcode: 1
+filename: /1009
+mode: octet
+</protocol>
+</verify>
+</testcase>