I had an issue about UDP Echo Server and Client. It is already solved because of module includes. However this time i am sure that i have included necessary modules. Board is esp8266-esp-12x. I thought that there might be a problem on TCP API porting for esp8266?
The code is offical example in TCP Api in https://riot-os.org/api/group__net__sock__tcp.html#ga0144778bc074e291fcb0d43bd35c0179 My makefile is given below name of your application APPLICATION = tcp-simple-server If no BOARD is found in the environment, use this default: BOARD ?= esp8266-esp-12x This has to be the absolute path to the RIOT base directory: RIOTBASE ?= $(CURDIR)/../.. BOARD_INSUFFICIENT_MEMORY := arduino-duemilanove arduino-leonardo \ arduino-mega2560 arduino-nano \ arduino-uno blackpill bluepill calliope-mini \ chronos hifive1 i-nucleo-lrwan1 mega-xplained \ microbit msb-430 msb-430h \ nucleo-f031k6 nucleo-f042k6 nucleo-f303k8 \ nucleo-l031k6 nucleo-f030r8 nucleo-f070rb \ nucleo-f072rb nucleo-f103rb nucleo-f302r8 \ nucleo-f334r8 nucleo-l053r8 saml10-xpro \ saml11-xpro spark-core stm32f0discovery \ stm32l0538-disco telosb \ waspmote-pro wsn430-v1_3b wsn430-v1_4 z1 Include packages that pull up and auto-init the link layer. NOTE: 6LoWPAN will be included if IEEE802.15.4 devices are present USEMODULE += gnrc_netdev_default USEMODULE += auto_init_gnrc_netif Activate ICMPv6 error messages USEMODULE += gnrc_icmpv6_error Specify the mandatory networking modules for IPv6 and UDP USEMODULE += gnrc_ipv6_router_default USEMODULE += gnrc_sock_check_reuse # gnrc_udp, gnrc_sock_udp , gnrc_ipv6 USEMODULE += gnrc_sock_tcp USEMODULE += gnrc_tcp USEMODULE += gnrc_ipv6_default USEMODULE += gnrc_ipv6 Add a routing protocol USEMODULE += gnrc_rpl USEMODULE += auto_init_gnrc_rpl This application dumps received packets to STDIO using the pktdump module USEMODULE += gnrc_pktdump Additional networking modules that can be dropped if not needed USEMODULE += gnrc_icmpv6_echo Add also the shell, some shell commands USEMODULE += shell USEMODULE += shell_commands USEMODULE += ps USEMODULE += netstats_l2 USEMODULE += netstats_ipv6 USEMODULE += netstats_rpl ... .... ` And output of the fail build is given below ; `/home/riot/RIOT-master/examples/tcp-simple-server/server.c:6:12: error: array type has incomplete element type sock_tcp_t sock_queue[SOCK_QUEUE_LEN]; ^ /home/riot/RIOT-master/examples/tcp-simple-server/server.c: In function 'main': /home/riot/RIOT-master/examples/tcp-simple-server/server.c:15:22: error: storage size of 'queue' isn't known sock_tcp_queue_t queue; ^ /home/riot/RIOT-master/examples/tcp-simple-server/server.c:30:9: error: too few arguments to function 'sock_tcp_accept' if (sock_tcp_accept(&queue, &sock) < 0) { ^ In file included from /home/riot/RIOT-master/examples/tcp-simple-server/server.c:2:0: /home/riot/RIOT-master/sys/include/net/sock/tcp.h:474:5: note: declared here int sock_tcp_accept(sock_tcp_queue_t *queue, sock_tcp_t **sock, ^ /home/riot/RIOT-master/examples/tcp-simple-server/server.c:15:22: error: unused variable 'queue' [-Werror=unused-variable] sock_tcp_queue_t queue; ^ cc1: all warnings being treated as errors /home/riot/RIOT-master/Makefile.base:83: recipe for target '/home/riot/RIOT-master/examples/tcp-simple-server/bin/esp8266-esp-12x/application_tcp-simple-server/server.o' failed make[1]: *** [/home/riot/RIOT-master/examples/tcp-simple-server/bin/esp8266-esp-12x/application_tcp-simple-server/server.o] Error 1 /home/riot/RIOT-master/examples/tcp-simple-server/../../Makefile.include:478: recipe for target '/home/riot/RIOT-master/examples/tcp-simple-server/bin/esp8266-esp-12x/application_tcp-simple-server.a' failed make: *** [/home/riot/RIOT-master/examples/tcp-simple-server/bin/esp8266-esp-12x/application_tcp-simple-server.a] Error 2 make: Leaving directory '/home/riot/RIOT-master/examples/tcp-simple-server'` Thanks for your help
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