diff --git a/include/rawrtc/ice_candidate.h b/include/rawrtc/ice_candidate.h
new file mode 100644
index 0000000..3d048aa
--- /dev/null
+++ b/include/rawrtc/ice_candidate.h
@@ -0,0 +1,206 @@
+#pragma once
+#include <rawrtcc/code.h>
+#include <re.h>
+#include <netinet/in.h>  // IPPROTO_UDP, IPPROTO_TCP
+
+/*
+ * ICE protocol.
+ */
+enum rawrtc_ice_protocol {
+    RAWRTC_ICE_PROTOCOL_UDP = IPPROTO_UDP,
+    RAWRTC_ICE_PROTOCOL_TCP = IPPROTO_TCP,
+};
+
+/*
+ * ICE candidate type.
+ */
+enum rawrtc_ice_candidate_type {
+    RAWRTC_ICE_CANDIDATE_TYPE_HOST = ICE_CAND_TYPE_HOST,
+    RAWRTC_ICE_CANDIDATE_TYPE_SRFLX = ICE_CAND_TYPE_SRFLX,
+    RAWRTC_ICE_CANDIDATE_TYPE_PRFLX = ICE_CAND_TYPE_PRFLX,
+    RAWRTC_ICE_CANDIDATE_TYPE_RELAY = ICE_CAND_TYPE_RELAY,
+};
+
+/*
+ * ICE TCP candidate type.
+ */
+enum rawrtc_ice_tcp_candidate_type {
+    RAWRTC_ICE_TCP_CANDIDATE_TYPE_ACTIVE = ICE_TCP_ACTIVE,
+    RAWRTC_ICE_TCP_CANDIDATE_TYPE_PASSIVE = ICE_TCP_PASSIVE,
+    RAWRTC_ICE_TCP_CANDIDATE_TYPE_SO = ICE_TCP_SO,
+};
+
+/*
+ * ICE candidate.
+ */
+struct rawrtc_ice_candidate;
+
+/*
+ * ICE candidates.
+ * Note: Inherits `struct rawrtc_array_container`.
+ */
+struct rawrtc_ice_candidates {
+    size_t n_candidates;
+    struct rawrtc_ice_candidate* candidates[];
+};
+
+/*
+ * Create an ICE candidate.
+ * `*candidatep` must be unreferenced.
+ */
+enum rawrtc_code rawrtc_ice_candidate_create(
+    struct rawrtc_ice_candidate** const candidatep,  // de-referenced
+    char* const foundation,  // copied
+    uint32_t const priority,
+    char* const ip,  // copied
+    enum rawrtc_ice_protocol const protocol,
+    uint16_t const port,
+    enum rawrtc_ice_candidate_type const type,
+    enum rawrtc_ice_tcp_candidate_type const tcp_type,
+    char* const related_address,  // copied, nullable
+    uint16_t const related_port);
+
+/*
+ * Get the ICE candidate's foundation.
+ * `*foundationp` will be set to a copy of the IP address that must be
+ * unreferenced.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_foundation(
+    char** const foundationp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's priority.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_priority(
+    uint32_t* const priorityp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's IP address.
+ * `*ipp` will be set to a copy of the IP address that must be
+ * unreferenced.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_ip(
+    char** const ipp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's protocol.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_protocol(
+    enum rawrtc_ice_protocol* const protocolp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's port.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_port(
+    uint16_t* const portp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's type.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_type(
+    enum rawrtc_ice_candidate_type* typep,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's TCP type.
+ * Return `RAWRTC_CODE_NO_VALUE` in case the protocol is not TCP.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_tcp_type(
+    enum rawrtc_ice_tcp_candidate_type* typep,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's related IP address.
+ * `*related_address` will be set to a copy of the related address that
+ * must be unreferenced.
+ *
+ * Return `RAWRTC_CODE_NO_VALUE` in case no related address exists.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_related_address(
+    char** const related_addressp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Get the ICE candidate's related IP address' port.
+ * `*related_portp` will be set to a copy of the related address'
+ * port.
+ *
+ * Return `RAWRTC_CODE_NO_VALUE` in case no related port exists.
+ */
+enum rawrtc_code rawrtc_ice_candidate_get_related_port(
+    uint16_t* const related_portp,  // de-referenced
+    struct rawrtc_ice_candidate* const candidate);
+
+/*
+ * Translate a protocol to the corresponding IPPROTO_*.
+ */
+int rawrtc_ice_protocol_to_ipproto(enum rawrtc_ice_protocol const protocol);
+
+/*
+ * Translate a IPPROTO_* to the corresponding protocol.
+ */
+enum rawrtc_code rawrtc_ipproto_to_ice_protocol(
+    enum rawrtc_ice_protocol* const protocolp,  // de-referenced
+    int const ipproto);
+
+/*
+ * Translate an ICE protocol to str.
+ */
+char const* rawrtc_ice_protocol_to_str(enum rawrtc_ice_protocol const protocol);
+
+/*
+ * Translate a pl to an ICE protocol (case-insensitive).
+ */
+enum rawrtc_code rawrtc_pl_to_ice_protocol(
+    enum rawrtc_ice_protocol* const protocolp,  // de-referenced
+    struct pl const* const pl);
+
+/*
+ * Translate a str to an ICE protocol (case-insensitive).
+ */
+enum rawrtc_code rawrtc_str_to_ice_protocol(
+    enum rawrtc_ice_protocol* const protocolp,  // de-referenced
+    char const* const str);
+
+/*
+ * Translate an ICE candidate type to str.
+ */
+char const* rawrtc_ice_candidate_type_to_str(enum rawrtc_ice_candidate_type const type);
+
+/*
+ * Translate a pl to an ICE candidate type (case-insensitive).
+ */
+enum rawrtc_code rawrtc_pl_to_ice_candidate_type(
+    enum rawrtc_ice_candidate_type* const typep,  // de-referenced
+    struct pl const* const pl);
+
+/*
+ * Translate a str to an ICE candidate type (case-insensitive).
+ */
+enum rawrtc_code rawrtc_str_to_ice_candidate_type(
+    enum rawrtc_ice_candidate_type* const typep,  // de-referenced
+    char const* const str);
+
+/*
+ * Translate an ICE TCP candidate type to str.
+ */
+char const* rawrtc_ice_tcp_candidate_type_to_str(enum rawrtc_ice_tcp_candidate_type const type);
+
+/*
+ * Translate a str to an ICE TCP candidate type (case-insensitive).
+ */
+enum rawrtc_code rawrtc_pl_to_ice_tcp_candidate_type(
+    enum rawrtc_ice_tcp_candidate_type* const typep,  // de-referenced
+    struct pl const* const pl);
+
+/*
+ * Translate a str to an ICE TCP candidate type (case-insensitive).
+ */
+enum rawrtc_code rawrtc_str_to_ice_tcp_candidate_type(
+    enum rawrtc_ice_tcp_candidate_type* const typep,  // de-referenced
+    char const* const str);