fix: memory leaks (DEV-237)

[subotic]

Running sipi (compiled with the debug flag) with Valgrind and uploading a few images yield the following output:

==1== Memcheck, a memory error detector
==1== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==1== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==1== Command: /sipi/sipi --config=/sipi/config/sipi.knora-docker-config.lua
==1== 
Sipi: BUILD_TIMESTAMP: 2021-12-10 17:36
Sipi: BUILD_SCM_TAG: v3.3.1-4-g3df4eb9
Sipi: BUILD_SCM_REVISION: 3df4eb9f80162ee3968ba03eaae33cda028b4fcd
Sipi: Cache at "/sipi/cache" cachesize=104857600 nfiles=0 hysteresis=0.100000
Sipi: Starting SipiHttpServer::run()
Sipi: Sipi server starting
Sipi: Serving images from /sipi/images
Sipi: In Server::run
Sipi: Starting shttps server with 16 threads
Sipi: Creating thread pool....
Sipi: Added route /upload with script /sipi/scripts/upload.lua
Sipi: Added route /store with script /sipi/scripts/store.lua
Sipi: Added route /delete_temp_file with script /sipi/scripts/delete_temp_file.lua
Sipi: Added route /test_functions with script /sipi/scripts/test_functions.lua
Sipi: Added route /test_file_info with script /sipi/scripts/test_file_info.lua
Sipi: Added route /test_knora_session_cookie with script /sipi/scripts/test_knora_session_cookie.lua
Sipi: Server listening on HTTP port 1024
Ivan was here
BUILD_TIMESTAMP: 2021-12-10 17:36
BUILD_TIMESTAMP: 2021-12-10 17:36
BUILD_SCM_TAG: v3.3.1-4-g3df4eb9
BUILD_SCM_REVISION: 3df4eb9f80162ee3968ba03eaae33cda028b4fcd
Sipi: Accepted connection from 172.22.0.1
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E53A6: shttps::Server::run() (shttps/Server.cpp:1023)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
Sipi: Accepted connection from 172.22.0.1
==1== Syscall param socketcall.sendto(msg) points to uninitialised byte(s)
==1==    at 0x489377C: __libc_send (send.c:28)
==1==    by 0x489377C: send (send.c:23)
==1==    by 0x5D9A84: shttps::SocketControl::send_control_message(int, shttps::SocketControl::SocketInfo const&) (shttps/SocketControl.cpp:124)
==1==    by 0x5E5AA2: shttps::Server::run() (shttps/Server.cpp:1158)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1==  Address 0x1ffeff9a8c is on thread 1's stack
==1==  in frame #2, created by shttps::Server::run() (shttps/Server.cpp:944)
==1== 
Sipi: Socket connection: timeout or socket closed from main
Sipi: upload.lua: wrote image file to /sipi/images/tmp/BJcWQHE0f1t-D9gFYbrRsQa.jp2
...
Sipi: upload.lua: wrote image file to /sipi/images/tmp/Dc1pT0HOV71-AzloQSqGlL2.jp2
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E53C5: shttps::Server::run() (shttps/Server.cpp:1024)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E53E4: shttps::Server::run() (shttps/Server.cpp:1024)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
Sipi: upload.lua: wrote image file to /sipi/images/tmp/9AdnTT89FIO-CevwuPlCRZ8.jp2
...
Sipi: upload.lua: wrote image file to /sipi/images/tmp/BsDnf0zCqIM-BthrDvzwJdS.jp2
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5B35: shttps::Server::run() (shttps/Server.cpp:1166)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5E31: shttps::Server::run() (shttps/Server.cpp:1210)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5E6B: shttps::Server::run() (shttps/Server.cpp:1213)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5EA5: shttps::Server::run() (shttps/Server.cpp:1216)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5EDF: shttps::Server::run() (shttps/Server.cpp:1219)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5F19: shttps::Server::run() (shttps/Server.cpp:1222)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5F53: shttps::Server::run() (shttps/Server.cpp:1225)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5F90: shttps::Server::run() (shttps/Server.cpp:1228)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E5FCA: shttps::Server::run() (shttps/Server.cpp:1231)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E6007: shttps::Server::run() (shttps/Server.cpp:1234)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E6044: shttps::Server::run() (shttps/Server.cpp:1237)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
Sipi: upload.lua: wrote image file to /sipi/images/tmp/4OBV5F7t5ma-EFy3D0z9JbT.jp2
Sipi: upload.lua: wrote image file to /sipi/images/tmp/HX36n8ScRCI-F3dMWLOlQND.jp2
Sipi: upload.lua: wrote image file to /sipi/images/tmp/58urrdjIcbF-C40uycBKRVO.jp2
Sipi: -->POLLNVAL
Sipi: -->POLLOUT
Sipi: -->POLLRDNORM
Sipi: -->POLLWRBAND
Sipi: -->POLLWRNORM
Sipi: upload.lua: wrote image file to /sipi/images/tmp/1i8vuhjdWnD-E8EKSVLYNTd.jp2
...
Sipi: upload.lua: wrote image file to /sipi/images/tmp/HrAS0dTSP5W-D52Q8Ul2AbM.jp2
Sipi: Accepted connection from 172.22.0.1
Sipi: Socket connection: timeout or socket closed from main
Sipi: Accepted connection from 172.22.0.1
Sipi: upload.lua: wrote image file to /sipi/images/tmp/FuTrwQskxBT-BbyOs2IJWPG.jp2
Sipi: upload.lua: wrote image file to /sipi/images/tmp/7hzkNdjECZp-DG19b4T8PTQ.jp2
Sipi: Accepted connection from 172.22.0.1
Sipi: Accepted connection from 172.22.0.1
Sipi: upload.lua: wrote image file to /sipi/images/tmp/Fag0y3dXDt1-BmBwvUP1JwM.jp2
...
Sipi: upload.lua: wrote image file to /sipi/images/tmp/LM5vksDuelt-CGexSfVH4Oi.jp2
Sipi: -->POLLWRNORM
Sipi: upload.lua: wrote image file to /sipi/images/tmp/CBB1iu1EwUx-CtSMs8bVf1S.jp2
...
Sipi: upload.lua: wrote image file to /sipi/images/tmp/HDGOTQRnFTp-EKMZkG70UCr.jp2
==1== Thread 2:
==1== Syscall param socketcall.sendto(msg) points to uninitialised byte(s)
==1==    at 0x489377C: __libc_send (send.c:28)
==1==    by 0x489377C: send (send.c:23)
==1==    by 0x5D9A84: shttps::SocketControl::send_control_message(int, shttps::SocketControl::SocketInfo const&) (shttps/SocketControl.cpp:124)
==1==    by 0x58D15D: shttps::Server::stop() (shttps/Server.h:506)
==1==    by 0x5E61D3: shttps::sig_thread(void*) (shttps/Server.cpp:107)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1==  Address 0x5de9de4 is on thread 2's stack
==1==  in frame #2, created by shttps::Server::stop() (shttps/Server.h:502)
==1== 
DBG> 508 Sent stop message to stoppipe[1]=38

It seems that this is not connected to upload. Calling knora.json or info.json on a previously uploaded image results in the following valgrind output:

==1== Memcheck, a memory error detector
==1== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==1== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==1== Command: /sipi/sipi --config=/sipi/config/sipi.knora-docker-config.lua
==1== 
Ivan was here
BUILD_TIMESTAMP: 2021-12-10 17:36
BUILD_TIMESTAMP: 2021-12-10 17:36
BUILD_SCM_TAG: v3.3.1-4-g3df4eb9
BUILD_SCM_REVISION: 3df4eb9f80162ee3968ba03eaae33cda028b4fcd
Sipi: BUILD_TIMESTAMP: 2021-12-10 17:36
Sipi: BUILD_SCM_TAG: v3.3.1-4-g3df4eb9
Sipi: BUILD_SCM_REVISION: 3df4eb9f80162ee3968ba03eaae33cda028b4fcd
Sipi: Cache at "/sipi/cache" cachesize=104857600 nfiles=0 hysteresis=0.100000
Sipi: Starting SipiHttpServer::run()
Sipi: Sipi server starting
Sipi: Serving images from /sipi/images
Sipi: In Server::run
Sipi: Starting shttps server with 16 threads
Sipi: Creating thread pool....
Sipi: Added route /upload with script /sipi/scripts/upload.lua
Sipi: Added route /store with script /sipi/scripts/store.lua
Sipi: Added route /delete_temp_file with script /sipi/scripts/delete_temp_file.lua
Sipi: Added route /test_functions with script /sipi/scripts/test_functions.lua
Sipi: Added route /test_file_info with script /sipi/scripts/test_file_info.lua
Sipi: Added route /test_knora_session_cookie with script /sipi/scripts/test_knora_session_cookie.lua
Sipi: Server listening on HTTP port 1024
Sipi: Accepted connection from 172.22.0.1
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5E53A6: shttps::Server::run() (shttps/Server.cpp:1023)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1== 
Sipi: Accepted connection from 172.22.0.1
==1== Syscall param socketcall.sendto(msg) points to uninitialised byte(s)
==1==    at 0x489377C: __libc_send (send.c:28)
==1==    by 0x489377C: send (send.c:23)
==1==    by 0x5D9A84: shttps::SocketControl::send_control_message(int, shttps::SocketControl::SocketInfo const&) (shttps/SocketControl.cpp:124)
==1==    by 0x5E5AA2: shttps::Server::run() (shttps/Server.cpp:1158)
==1==    by 0x541556: Sipi::SipiHttpServer::run() (src/SipiHttpServer.cpp:1800)
==1==    by 0x4759A5: main (src/sipi.cpp:1267)
==1==  Address 0x1ffeff9a8c is on thread 1's stack
==1==  in frame #2, created by shttps::Server::run() (shttps/Server.cpp:944)
==1== 
Sipi: Socket connection: timeout or socket closed from main
Sipi: upload.lua: wrote image file to /sipi/images/tmp/Eod3yXeDInC-BivTleswEGp.jp2
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
Sipi: pre_flight called in sipi.init-knora.lua
==1== Thread 5:
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5A6EDD: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:187)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5A81C4: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:374)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x5A8773: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:429)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x4EC1402: std::ostreambuf_iterator<char, std::char_traits<char> > std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > >::_M_insert_int<long>(std::ostreambuf_iterator<char, std::char_traits<char> >, std::ios_base&, char, long) const (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x4ECFD5E: std::ostream& std::ostream::_M_insert<long>(long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x5A88BA: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:433)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
==1== Use of uninitialised value of size 8
==1==    at 0x4EC110B: ??? (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x4EC142C: std::ostreambuf_iterator<char, std::char_traits<char> > std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > >::_M_insert_int<long>(std::ostreambuf_iterator<char, std::char_traits<char> >, std::ios_base&, char, long) const (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x4ECFD5E: std::ostream& std::ostream::_M_insert<long>(long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x5A88BA: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:433)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x4EC111D: ??? (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x4EC142C: std::ostreambuf_iterator<char, std::char_traits<char> > std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > >::_M_insert_int<long>(std::ostreambuf_iterator<char, std::char_traits<char> >, std::ios_base&, char, long) const (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x4ECFD5E: std::ostream& std::ostream::_M_insert<long>(long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x5A88BA: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:433)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
==1== Conditional jump or move depends on uninitialised value(s)
==1==    at 0x4EC1462: std::ostreambuf_iterator<char, std::char_traits<char> > std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> > >::_M_insert_int<long>(std::ostreambuf_iterator<char, std::char_traits<char> >, std::ios_base&, char, long) const (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x4ECFD5E: std::ostream& std::ostream::_M_insert<long>(long) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.28)
==1==    by 0x5A88BA: Sipi::SipiSize::get_size(unsigned long, unsigned long, unsigned long&, unsigned long&, int&, bool&) (src/iiifparser/SipiSize.cpp:433)
==1==    by 0x5500B7: Sipi::iiif_send_info(shttps::Connection&, Sipi::SipiHttpServer*, shttps::LuaServer&, std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&, bool) (src/SipiHttpServer.cpp:551)
==1==    by 0x544D05: Sipi::process_get_request(shttps::Connection&, shttps::LuaServer&, void*, void*) (src/SipiHttpServer.cpp:1216)
==1==    by 0x5E6E2D: shttps::Server::processRequest(std::istream*, std::ostream*, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, int, bool, int&, bool) (shttps/Server.cpp:1310)
==1==    by 0x5E650E: shttps::process_request(void*) (shttps/Server.cpp:799)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1== 
Sipi: pre_flight called in sipi.init-knora.lua
==1== Thread 2:
==1== Syscall param socketcall.sendto(msg) points to uninitialised byte(s)
==1==    at 0x489377C: __libc_send (send.c:28)
==1==    by 0x489377C: send (send.c:23)
==1==    by 0x5D9A84: shttps::SocketControl::send_control_message(int, shttps::SocketControl::SocketInfo const&) (shttps/SocketControl.cpp:124)
==1==    by 0x58D15D: shttps::Server::stop() (shttps/Server.h:506)
==1==    by 0x5E61D3: shttps::sig_thread(void*) (shttps/Server.cpp:107)
==1==    by 0x4888608: start_thread (pthread_create.c:477)
==1==    by 0x50BD292: clone (clone.S:95)
==1==  Address 0x5de9de4 is on thread 2's stack
==1==  in frame #2, created by shttps::Server::stop() (shttps/Server.h:502)
==1== 
DBG> 508 Sent stop message to stoppipe[1]=38