{"id":164650,"date":"2026-03-14T17:11:55","date_gmt":"2026-03-14T15:11:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/wolfip-i-passt-legkovesnye-steki-tcp-ip-rabotayushhie-bez-dinamicheskogo-vydeleniya-pamyati"},"modified":"2026-03-14T17:11:55","modified_gmt":"2026-03-14T15:11:55","slug":"wolfip-i-passt-legkovesnye-steki-tcp-ip-rabotayushhie-bez-dinamicheskogo-vydeleniya-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/wolfip-i-passt-legkovesnye-steki-tcp-ip-rabotayushhie-bez-dinamicheskogo-vydeleniya-pamyati","title":{"rendered":"wolfIP e passt \u2014 pilhas TCP\/IP leves que funcionam sem aloca\u00e7\u00e3o din\u00e2mica de mem\u00f3ria.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Os desenvolvedores da biblioteca criptogr\u00e1fica wolfSSL est\u00e3o aprimorando a pilha TCP\/IP wolfIP, otimizada para uso em dispositivos embarcados com recursos limitados, bem como em sistemas que operam em tempo real e solu\u00e7\u00f5es que exigem maior confiabilidade (Safety-Critical). Para um consumo previs\u00edvel de recursos, o wolfIP n\u00e3o utiliza aloca\u00e7\u00e3o din\u00e2mica de mem\u00f3ria \u2014 todos os buffers e tabelas de sockets t\u00eam um tamanho fixo e s\u00e3o configurados na fase de compila\u00e7\u00e3o. O c\u00f3digo do projeto \u00e9 escrito em C e \u00e9 distribu\u00eddo sob a licen\u00e7a GPLv3.       <\/p>\n<p>O projeto pode ser utilizado como um stack TCP\/IP funcionando no espa\u00e7o do usu\u00e1rio, substituindo o stack de rede do Linux, FreeBSD e macOS, e tamb\u00e9m \u00e9 aplic\u00e1vel em sistemas embarcados baseados em FreeRTOS, SafeRTOS, Zephyr, Azure RTOS ThreadX, NuttX, RTEMS, VxWorks e QNX. Al\u00e9m disso, aplica\u00e7\u00f5es de rede autossustent\u00e1veis podem ser criadas com base no wolfIP, executando-se sobre hardware bare-metal. Em combina\u00e7\u00e3o com a biblioteca wolfSSL, oferece suporte a TLS 1.3, permitindo a cria\u00e7\u00e3o de sistemas embarcados compactos que suportam HTTPS.        <\/p>\n<p>Principais caracter\u00edsticas do wolfIP:  <\/p>\n<ul>\n<li class=\"l\"> Uso de buffers alocados estaticamente para o processamento de pacotes de rede. Chamadas malloc e free n\u00e3o s\u00e3o utilizadas.\n<li class=\"l\"> Possibilidade de ser utilizado em vez dos stacks de rede padr\u00e3o em sistemas POSIX.\n<li class=\"l\"> Suporte a sockets BSD em modo bloqueante e n\u00e3o bloqueante.\n<li class=\"l\"> Tamanho compacto (4200 linhas de c\u00f3digo, 4 vezes menor que o stack TCP\/IP lwIP).\n<li class=\"l\"> Suporte a interfaces de rede STM32 Ethernet.\n<li class=\"l\"> Possibilidade de uso de uma interface de rede TAP para testar a opera\u00e7\u00e3o sem hardware.\n<li class=\"l\"> Desenvolvimento focado em sistemas com altas exig\u00eancias de seguran\u00e7a: configura\u00e7\u00e3o determin\u00edstica e reproduz\u00edvel; modelo de implanta\u00e7\u00e3o que assegura seguran\u00e7a (Secure-by-default); isolamento entre componentes. Suporte a atualiza\u00e7\u00f5es seguras de vers\u00f5es; longa manuten\u00e7\u00e3o.\n<li class=\"l\"> Considera\u00e7\u00e3o das exig\u00eancias para sistemas altamente confi\u00e1veis: aus\u00eancia de aloca\u00e7\u00e3o din\u00e2mica de recursos; pools de mem\u00f3ria fixos; uso controlado de recursos; comportamento previs\u00edvel; arquitetura simplificada; suporte \u00e0 gera\u00e7\u00e3o de artefatos para verifica\u00e7\u00e3o.\n<li class=\"l\"> Implementa\u00e7\u00e3o de IPv4, UDP, TCP, IPSEC, ARP, ICMP, cliente DHCP, cliente DNS e servidor HTTP\/HTTPS. Suporte \u00e0 implementa\u00e7\u00e3o do TCP RFC 7323 (Carimbos de Tempo TCP, medi\u00e7\u00e3o RTT, PAWS, Escalonamento de Janela), MSS (Tamanho M\u00e1ximo de Segmento), RTO (tempo limite de retransmiss\u00e3o) e SACK (Reconhecimento Seletivo). V\u00e1rios algoritmos de controle de congestionamento.     <\/ul>\n<p>Entre as limita\u00e7\u00f5es do wolfIP, destaca-se a possibilidade de uso do wolfIP apenas como um n\u00f3 final capaz de receber e estabelecer conex\u00f5es, mas sem suporte para roteamento de tr\u00e1fego entre interfaces de rede.          <\/p>\n<p>Al\u00e9m disso, merece destaque o desenvolvimento ativo por um funcion\u00e1rio da Red Hat de uma pilha TCP\/IP semelhante chamada passt, que opera no espa\u00e7o do usu\u00e1rio e n\u00e3o utiliza aloca\u00e7\u00e3o din\u00e2mica de mem\u00f3ria. O projeto passt est\u00e1 sendo desenvolvido para organizar um canal de comunica\u00e7\u00e3o entre o ambiente host e os sistemas convidados no QEMU como uma substitui\u00e7\u00e3o mais segura ao libslirp. O c\u00f3digo do passt \u00e9 escrito em C, possui cerca de 5000 linhas e \u00e9 distribu\u00eddo sob a licen\u00e7a GPLv2+.    <\/p>\n<p>Entre as caracter\u00edsticas do passt, podemos destacar: <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/lir\/ipv4\/\" title=\"suporte a IPv6\" data-wpil-keyword-link=\"linked\">suporte a IPv6<\/a> al\u00e9m do IPv4, otimiza\u00e7\u00f5es baseadas em instru\u00e7\u00f5es AVX2, prote\u00e7\u00e3o contra synflood, suporte integrado ao QEMU, libvirt e Podman, pacotes para todas as distribui\u00e7\u00f5es populares, servi\u00e7o de proxy ARP, servidores DHCPD, DHCPv6 e NDP minimalistas, perfil seccomp para bloquear todas as chamadas de sistema n\u00e3o utilizadas, suporte \u00e0 NAT e a possibilidade de uso como uma substitui\u00e7\u00e3o transparente ao slirp4netns.<br \/>\n<br \/>Fonte: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64989\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 wolfSSL \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0442 TCP\/IP \u0441\u0442\u0435\u043a wolfIP, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0430 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430\u0445, \u0438\u043c\u0435\u044e\u0449\u0438\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u044b, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043b\u044f \u0441\u0438\u0441\u0442\u0435\u043c, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 \u0440\u0435\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438, \u0438 \u0440\u0435\u0448\u0435\u043d\u0438\u0439, \u0442\u0440\u0435\u0431\u0443\u044e\u0449\u0438\u0445 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u043d\u043e\u0439 \u043d\u0430\u0434\u0451\u0436\u043d\u043e\u0441\u0442\u0438 (Safety-Critical). \u0414\u043b\u044f \u043f\u0440\u0435\u0434\u0441\u043a\u0430\u0437\u0443\u0435\u043c\u043e\u0433\u043e \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044f \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0432 wolfIP \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 &#8212; \u0432\u0441\u0435 \u0431\u0443\u0444\u0435\u0440\u044b \u0438 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0441\u043e\u043a\u0435\u0442\u043e\u0432 \u0438\u043c\u0435\u044e\u0442 \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0440\u0430\u0437\u043c\u0435\u0440 \u0438 \u043d\u0430\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-164650","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 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modo.","canonical_url":"https:\/\/prohoster.info\/pt\/blog\/news\/wolfip-i-passt-legkovesnye-steki-tcp-ip-rabotayushhie-bez-dinamicheskogo-vydeleniya-pamyati","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pt_PT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47wolfIP \u0438 passt \u2014 \u043b\u0435\u0433\u043a\u043e\u0432\u0435\u0441\u043d\u044b\u0435 \u0441\u0442\u0435\u043a\u0438 TCP\/IP, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0435 \u0431\u0435\u0437 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 wolfSSL \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0442 TCP\/IP \u0441\u0442\u0435\u043a wolfIP, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0430 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430\u0445, \u0438\u043c\u0435\u044e\u0449\u0438\u0445 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u0435 \u0440\u0435\u0441\u0443\u0440\u0441\u044b, \u0430 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