[mod_wstunnel] websocket tunnel to other protocol

*experimental*

decodes websockets and passes body back and forth from backend
(body could be known protocol such as JSON, or any custom protocol)

originally based off https://github.com/nori0428/mod_websocket

configure.ac

@@ -1014,7 +1014,7 @@ AC_OUTPUT
 
 do_build="mod_cgi mod_fastcgi mod_extforward mod_proxy mod_evhost mod_simple_vhost mod_access mod_alias mod_setenv mod_usertrack mod_auth mod_authn_file mod_status mod_accesslog"
 do_build="$do_build mod_rrdtool mod_secdownload mod_expire mod_compress mod_dirlisting mod_indexfile mod_userdir mod_webdav mod_staticfile mod_scgi mod_flv_streaming mod_ssi mod_deflate"
-do_build="$do_build mod_vhostdb"
+do_build="$do_build mod_vhostdb mod_wstunnel"
 
 plugins="mod_rewrite mod_redirect"
 features="regex-conditionals"

src/CMakeLists.txt

@@ -635,6 +635,7 @@ add_and_install_library(mod_userdir mod_userdir.c)
 add_and_install_library(mod_usertrack mod_usertrack.c)
 add_and_install_library(mod_vhostdb mod_vhostdb.c)
 add_and_install_library(mod_webdav mod_webdav.c)
+add_and_install_library(mod_wstunnel mod_wstunnel.c)
 
 add_executable(test_buffer
 	test_buffer.c
@@ -822,6 +823,7 @@ if(HAVE_LIBSSL AND HAVE_LIBCRYPTO)
 	set(L_MOD_AUTHN_FILE ${L_MOD_AUTHN_FILE} crypto)
 	target_link_libraries(mod_authn_file ${L_MOD_AUTHN_FILE})
 	target_link_libraries(mod_secdownload crypto)
+	target_link_libraries(mod_wstunnel crypto)
 endif()
 
 if(WITH_LIBEV)

src/Makefile.am

@@ -370,6 +370,11 @@ mod_uploadprogress_la_SOURCES = mod_uploadprogress.c
 mod_uploadprogress_la_LDFLAGS = $(common_module_ldflags)
 mod_uploadprogress_la_LIBADD = $(common_libadd)
 
+lib_LTLIBRARIES += mod_wstunnel.la
+mod_wstunnel_la_SOURCES = mod_wstunnel.c
+mod_wstunnel_la_LDFLAGS = $(common_module_ldflags)
+mod_wstunnel_la_LIBADD = $(common_libadd) $(CRYPTO_LIB)
+
 
 hdr = server.h base64.h buffer.h network.h log.h keyvalue.h \
 	response.h request.h fastcgi.h chunk.h \

src/SConscript

@@ -124,6 +124,7 @@ modules = {
 	'mod_ssi' : { 'src' : [ 'mod_ssi_exprparser.c', 'mod_ssi_expr.c', 'mod_ssi.c' ] },
 	'mod_flv_streaming' : { 'src' : [ 'mod_flv_streaming.c' ] },
 	'mod_vhostdb' : { 'src' : [ 'mod_vhostdb.c' ] },
+	'mod_wstunnel' : { 'src' : [ 'mod_wstunnel.c' ], 'lib' : [ env['LIBCRYPTO'] ] },
 }
 
 if env['with_geoip']: