From 241dba405ae682885ec57e4747c6a4ac83575e17 Mon Sep 17 00:00:00 2001
From: Samuel Jero <sjero@purdue.edu>
Date: Thu, 12 Jun 2014 20:28:44 -0500
Subject: [PATCH] Add --bindport option to force TCP source port.
 https://lists.gnu.org/archive/html/bug-wget/2014-01/msg00070.html

---
 src/connect.c | 4 ++--
 src/init.c    | 1 +
 src/main.c    | 1 +
 src/options.h | 1 +
 4 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/connect.c b/src/connect.c
index 1e4a44ba..90e2abf4 100644
--- a/src/connect.c
+++ b/src/connect.c
@@ -190,7 +190,7 @@ resolve_bind_address (struct sockaddr *sa)
   if (called)
     {
       if (should_bind)
-        sockaddr_set_data (sa, &ip, 0);
+        sockaddr_set_data (sa, &ip, opt.bind_port);
       return should_bind;
     }
   called = true;
@@ -212,7 +212,7 @@ resolve_bind_address (struct sockaddr *sa)
   ip = *address_list_address_at (al, 0);
   address_list_release (al);
 
-  sockaddr_set_data (sa, &ip, 0);
+  sockaddr_set_data (sa, &ip, opt.bind_port);
   should_bind = true;
   return true;
 }
diff --git a/src/init.c b/src/init.c
index 9a6fd2b5..fd8eb0c0 100644
--- a/src/init.c
+++ b/src/init.c
@@ -138,6 +138,7 @@ static const struct {
   { "backups",          &opt.backups,           cmd_number },
   { "base",             &opt.base_href,         cmd_string },
   { "bindaddress",      &opt.bind_address,      cmd_string },
+  { "bindport",         &opt.bind_port,         cmd_number },
   { "bodydata",         &opt.body_data,         cmd_string },
   { "bodyfile",         &opt.body_file,         cmd_string },
 #ifdef HAVE_SSL
diff --git a/src/main.c b/src/main.c
index 4b230531..1e087067 100644
--- a/src/main.c
+++ b/src/main.c
@@ -161,6 +161,7 @@ static struct cmdline_option option_data[] =
     { "backups", 0, OPT_BOOLEAN, "backups", -1 },
     { "base", 'B', OPT_VALUE, "base", -1 },
     { "bind-address", 0, OPT_VALUE, "bindaddress", -1 },
+    { "bind-port", 0, OPT_VALUE, "bindport", -1 },
     { "body-data", 0, OPT_VALUE, "bodydata", -1 },
     { "body-file", 0, OPT_VALUE, "bodyfile", -1 },
     { IF_SSL ("ca-certificate"), 0, OPT_VALUE, "cacertificate", -1 },
diff --git a/src/options.h b/src/options.h
index cd4e5188..ccca0d30 100644
--- a/src/options.h
+++ b/src/options.h
@@ -195,6 +195,7 @@ struct options
   bool page_requisites;         /* Whether we need to download all files
                                    necessary to display a page properly. */
   char *bind_address;           /* What local IP address to bind to. */
+  int bind_port;		/* What local port to bind to. */
 
 #ifdef HAVE_SSL
   enum {
-- 
2.39.2