The following sections provide sample code describing how sockets work.
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| BSD | Net Sock | Net App | Description |
|---|---|---|---|
| socket() | NetSock_Open() | NetApp_SockOpen() | Create a datagram (i.e., UDP) or stream (i.e., TCP) type socket. |
| bind() | NetSock_Bind() | NetApp_SockBind() | Assign network addresses to sockets. |
| connect() | NetSock_Conn() | NetApp_SockConn() | Connect a local socket to a remote socket address. |
| listen() | NetSock_Listen() | NetApp_SockListen() | Set a socket to accept incoming connections. |
| accept() | NetSock_Accept() | NetApp_SockAccept() | Wait for new socket connections on a listening server socket. |
| recv() / recvfrom() | NetSock_RxData() / NetSock_RxDataFrom() | NetApp_SockRx() | Copy up to a specified number of bytes received from a remote socket into an application memory buffer. |
| send() / sendto() | NetSock_TxData() / NetSock_TxDataTo() | NetApp_SockTx() | Copy bytes from an application memory buffer into a socket to send to a remote socket. |
| close() | NetSock_Close() | NetApp_SockClose() | Terminate communication and free a socket. |
| select() | NetSock_Sel() | N/A | Check if any sockets are ready for available read or write operations or error conditions. |
| N/A | NetSock_SelAbort() | N/A | Abort a select (i.e. unblock task(s) waiting on socket(s) using the select) |
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| BSD | µC/TCPIP Functions | Description |
|---|---|---|
| htonl | Convert 32-bit integer values from network-order to CPU host-order. | |
| htons() | NET_UTIL_HOST_TO_NET_16() | Convert 16-bit integer values from network-order to CPU host-order. |
| ntohl() | NET_UTIL_NET_TO_HOST_32() | Convert 32-bit integer values from network-order to CPU host-order. |
| ntohs() | NET_UTIL_NET_TO_HOST_16() | Convert 16-bit integer values from network-order to CPU host-order. |
| inet_addr() | NetASCII_Str_to_IPv4() | Convert a string of an IPv4 address in dotted-decimal notation to an IPv4 address in host-order. |
| inet_aton() | NetASCII_Str_to_IPv4() | Convert an IPv4 address in ASCII dotted-decimal notation to a network protocol IPv4 address in network-order. |
| inet_ntoa() | NetASCII_IPv4_to_Str() | Convert an IPv4 address in host-order into an IPv4 dotted-decimal notation ASCII string. |
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