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94 lines
2.9 KiB
Markdown
94 lines
2.9 KiB
Markdown
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[← Home](../README.md) · [Networking](README.md)
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# bsdsocket.library — BSD Socket API
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## Overview
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`bsdsocket.library` is the AmigaOS implementation of the BSD socket API. It is provided by the active TCP/IP stack (AmiTCP, Miami, Roadshow) and presents a POSIX-like socket interface adapted to the Amiga's library-based architecture.
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---
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## Opening
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```c
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struct Library *SocketBase = OpenLibrary("bsdsocket.library", 4);
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if (!SocketBase) { /* no TCP/IP stack running */ }
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```
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---
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## Core Functions (LVO Mapping)
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| LVO | Function | BSD Equivalent |
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|---|---|---|
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| −30 | `socket(domain, type, protocol)` | `socket()` |
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| −36 | `bind(sock, name, namelen)` | `bind()` |
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| −42 | `listen(sock, backlog)` | `listen()` |
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| −48 | `accept(sock, addr, addrlen)` | `accept()` |
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| −54 | `connect(sock, name, namelen)` | `connect()` |
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| −60 | `sendto(sock, buf, len, flags, to, tolen)` | `sendto()` |
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| −66 | `send(sock, buf, len, flags)` | `send()` |
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| −72 | `recvfrom(sock, buf, len, flags, from, fromlen)` | `recvfrom()` |
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| −78 | `recv(sock, buf, len, flags)` | `recv()` |
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| −84 | `shutdown(sock, how)` | `shutdown()` |
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| −90 | `setsockopt(...)` | `setsockopt()` |
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| −96 | `getsockopt(...)` | `getsockopt()` |
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| −102 | `gethostbyname(name)` | `gethostbyname()` |
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| −108 | `gethostbyaddr(addr, len, type)` | `gethostbyaddr()` |
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| −114 | `getnetbyname(name)` | `getnetbyname()` |
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| −168 | `Errno()` | `errno` (returns last error) |
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| −174 | `CloseSocket(sock)` | `close()` |
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| −180 | `WaitSelect(nfds, rd, wr, ex, timeout, sigmask)` | `select()` + signals |
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| −210 | `inet_addr(cp)` | `inet_addr()` |
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| −216 | `Inet_NtoA(in)` | `inet_ntoa()` |
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| −222 | `inet_makeaddr(net, host)` | `inet_makeaddr()` |
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| −252 | `getservbyname(name, proto)` | `getservbyname()` |
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---
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## WaitSelect — Amiga-Enhanced select()
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Unlike BSD `select()`, `WaitSelect` integrates with Exec signals:
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```c
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fd_set rdset;
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FD_ZERO(&rdset);
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FD_SET(sock, &rdset);
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ULONG sigmask = SIGBREAKF_CTRL_C; /* also wait for Ctrl-C */
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struct timeval tv = { 5, 0 }; /* 5 second timeout */
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LONG n = WaitSelect(sock + 1, &rdset, NULL, NULL, &tv, &sigmask);
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if (n > 0 && FD_ISSET(sock, &rdset)) { /* data ready */ }
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if (sigmask & SIGBREAKF_CTRL_C) { /* user pressed Ctrl-C */ }
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```
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---
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## Simple TCP Client
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```c
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LONG sock = socket(AF_INET, SOCK_STREAM, 0);
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struct sockaddr_in addr;
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addr.sin_family = AF_INET;
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addr.sin_port = htons(80);
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addr.sin_addr.s_addr = inet_addr("93.184.216.34");
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if (connect(sock, (struct sockaddr *)&addr, sizeof(addr)) == 0) {
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send(sock, "GET / HTTP/1.0\r\nHost: example.com\r\n\r\n", 38, 0);
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char buf[4096];
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LONG n = recv(sock, buf, sizeof(buf) - 1, 0);
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buf[n] = 0;
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Printf("%s\n", buf);
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}
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CloseSocket(sock);
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```
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---
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## References
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- NDK39: `libraries/bsdsocket.h` (stack-specific)
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- Roadshow SDK documentation
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- `12_networking/sana2.md` — network device driver layer
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