Add option to enable acting as TCP relay server

doc/toxic.1

@@ -2,12 +2,12 @@
 .\"     Title: toxic
 .\"    Author: [see the "AUTHORS" section]
 .\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
-.\"      Date: 2014-12-27
+.\"      Date: 2015-03-28
 .\"    Manual: Toxic Manual
 .\"    Source: toxic __VERSION__
 .\"  Language: English
 .\"
-.TH "TOXIC" "1" "2014\-12\-27" "toxic __VERSION__" "Toxic Manual"
+.TH "TOXIC" "1" "2015\-03\-28" "toxic __VERSION__" "Toxic Manual"
 .\" -----------------------------------------------------------------
 .\" * Define some portability stuff
 .\" -----------------------------------------------------------------
@@ -111,6 +111,11 @@ Use specified DNSservers file
 Force TCP connection (use this with proxies)
 .RE
 .PP
+\-T, \-\-tcp\-relay
+.RS 4
+Act as a TCP relay server for the network (Note: this uses significantly more bandwidth)
+.RE
+.PP
 \-u, \-\-unencrypt\-data
 .RS 4
 Unencrypt a data file\&. A warning will appear if this option is used with a data file that is already unencrypted\&.

doc/toxic.1.asc

@@ -59,6 +59,9 @@ OPTIONS
 -t, --force-tcp::
     Force TCP connection (use this with proxies)
 
+-T, --tcp-relay::
+    Act as a TCP relay server for the network (Note: this uses significantly more bandwidth)
+
 -u, --unencrypt-data::
     Unencrypt a data file. A warning will appear if this option is used
     with a data file that is already unencrypted.

doc/toxic.conf.5

@@ -2,12 +2,12 @@
 .\"     Title: toxic.conf
 .\"    Author: [see the "AUTHORS" section]
 .\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
-.\"      Date: 2015-02-26
+.\"      Date: 2015-03-28
 .\"    Manual: Toxic Manual
 .\"    Source: toxic __VERSION__
 .\"  Language: English
 .\"
-.TH "TOXIC\&.CONF" "5" "2015\-02\-26" "toxic __VERSION__" "Toxic Manual"
+.TH "TOXIC\&.CONF" "5" "2015\-03\-28" "toxic __VERSION__" "Toxic Manual"
 .\" -----------------------------------------------------------------
 .\" * Define some portability stuff
 .\" -----------------------------------------------------------------

src/toxic.c

@@ -569,10 +569,14 @@ static void init_tox_options(struct Tox_Options *tox_opts)
     tox_opts->ipv6_enabled = !arg_opts.use_ipv4;
     tox_opts->udp_enabled = !arg_opts.force_tcp;
     tox_opts->proxy_type = arg_opts.proxy_type;
+    tox_opts->tcp_port = arg_opts.tcp_port;
 
     if (!tox_opts->ipv6_enabled)
         queue_init_message("Forcing IPv4 connection");
 
+    if (tox_opts->tcp_port)
+        queue_init_message("TCP relaying enabled on port %d", tox_opts->tcp_port);
+
     if (tox_opts->proxy_type != TOX_PROXY_TYPE_NONE) {
         tox_opts->proxy_port = arg_opts.proxy_port;
         tox_opts->proxy_host = arg_opts.proxy_address;
@@ -860,7 +864,8 @@ static void print_usage(void)
     fprintf(stderr, "  -p, --SOCKS5-proxy       Use SOCKS5 proxy: Requires [IP] [port]\n");
     fprintf(stderr, "  -P, --HTTP-proxy         Use HTTP proxy: Requires [IP] [port]\n");
     fprintf(stderr, "  -r, --dnslist            Use specified DNSservers file\n");
-    fprintf(stderr, "  -t, --force-tcp          Force TCP connection (use this with proxies)\n");
+    fprintf(stderr, "  -t, --force-tcp          Force toxic to use a TCP connection (use with proxies)\n");
+    fprintf(stderr, "  -T, --tcp-server         Act as a TCP relay server: Requires [port]\n");
     fprintf(stderr, "  -u, --unencrypt-data     Unencrypt an encrypted data file\n");
 }
 
@@ -888,13 +893,14 @@ static void parse_args(int argc, char *argv[])
         {"noconnect", no_argument, 0, 'o'},
         {"dnslist", required_argument, 0, 'r'},
         {"force-tcp", no_argument, 0, 't'},
+        {"tcp-server", required_argument, 0, 'T'},
         {"SOCKS5-proxy", required_argument, 0, 'p'},
         {"HTTP-proxy", required_argument, 0, 'P'},
         {"unencrypt-data", no_argument, 0, 'u'},
         {NULL, no_argument, NULL, 0},
     };
 
-    const char *opts_str = "4bdehotuxc:f:n:r:p:P:";
+    const char *opts_str = "4bdehotuxc:f:n:r:p:P:T:";
     int opt, indexptr;
 
     while ((opt = getopt_long(argc, argv, opts_str, long_opts, &indexptr)) != -1) {
@@ -985,6 +991,10 @@ static void parse_args(int argc, char *argv[])
                 arg_opts.force_tcp = 1;
                 break;
 
+            case 'T':
+                arg_opts.tcp_port = (uint16_t) atoi(optarg);
+                break;
+
             case 'u':
                 arg_opts.unencrypt_data = 1;
                 break;

src/windows.h

@@ -97,6 +97,8 @@ struct arg_opts {
     char proxy_address[256];
     uint8_t proxy_type;
     uint16_t proxy_port;
+
+    uint16_t tcp_port;
 };
 
 typedef struct ToxWindow ToxWindow;