setIPv4() — netty Function Reference

Architecture documentation for the setIPv4() function in SockaddrIn.java from the netty codebase.

Function java Buffer Allocators called by 1

Entity Profile

Buffer→ Allocators→ setIPv4() — netty Function Reference

Dependency Diagram

graph TD
  d1133751_664a_282a_9376_88a6578418dc["setIPv4()"]
  25164b27_46c0_d628_1986_f46b53ee8d7c["SockaddrIn"]
  d1133751_664a_282a_9376_88a6578418dc -->|defined in| 25164b27_46c0_d628_1986_f46b53ee8d7c
  2004ada0_a0c9_e64f_394d_cfe69d9ed1e3["setAddress()"]
  2004ada0_a0c9_e64f_394d_cfe69d9ed1e3 -->|calls| d1133751_664a_282a_9376_88a6578418dc
  style d1133751_664a_282a_9376_88a6578418dc fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-classes-quic/src/main/java/io/netty/handler/codec/quic/SockaddrIn.java lines 69–91

    static int setIPv4(ByteBuffer memory, InetAddress address, int port) {
        int position = memory.position();
        try {
            // memset
            memory.put(SOCKADDR_IN_EMPTY_ARRAY);

            memory.putShort(position + Quiche.SOCKADDR_IN_OFFSETOF_SIN_FAMILY, Quiche.AF_INET);
            memory.putShort(position + Quiche.SOCKADDR_IN_OFFSETOF_SIN_PORT, (short) port);

            byte[] bytes = address.getAddress();
            int offset = 0;
            if (bytes.length == IPV6_ADDRESS_LENGTH) {
                // IPV6 mapped IPV4 address, we only need the last 4 bytes.
                offset = IPV4_MAPPED_IPV6_PREFIX.length;
            }
            assert bytes.length == offset + IPV4_ADDRESS_LENGTH;
            memory.position(position + Quiche.SOCKADDR_IN_OFFSETOF_SIN_ADDR + Quiche.IN_ADDRESS_OFFSETOF_S_ADDR);
            memory.put(bytes, offset, IPV4_ADDRESS_LENGTH);
            return Quiche.SIZEOF_SOCKADDR_IN;
        } finally {
            memory.position(position);
        }
    }