diff options
Diffstat (limited to '')
| -rw-r--r-- | server.c | 35 |
1 files changed, 30 insertions, 5 deletions
diff --git a/server.c b/server.c index ce5ae87..2bb897d 100644 --- a/server.c +++ b/server.c @@ -63,22 +63,47 @@ void serverConfig(bool insecure, const char *cert, const char *priv) { tls_config_free(config); } -int serverConnect(const char *host, const char *port) { +int serverConnect(const char *bindHost, const char *host, const char *port) { assert(client); + int error; + int sock = -1; struct addrinfo *head; struct addrinfo hints = { .ai_family = AF_UNSPEC, .ai_socktype = SOCK_STREAM, .ai_protocol = IPPROTO_TCP, }; - int error = getaddrinfo(host, port, &hints, &head); + + if (bindHost) { + error = getaddrinfo(bindHost, NULL, &hints, &head); + if (error) errx(EX_NOHOST, "%s: %s", bindHost, gai_strerror(error)); + + for (struct addrinfo *ai = head; ai; ai = ai->ai_next) { + sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); + if (sock < 0) err(EX_OSERR, "socket"); + + error = bind(sock, ai->ai_addr, ai->ai_addrlen); + if (!error) { + hints.ai_family = ai->ai_family; + break; + } + + close(sock); + sock = -1; + } + if (sock < 0) err(EX_UNAVAILABLE, "%s", bindHost); + freeaddrinfo(head); + } + + error = getaddrinfo(host, port, &hints, &head); if (error) errx(EX_NOHOST, "%s:%s: %s", host, port, gai_strerror(error)); - int sock = -1; for (struct addrinfo *ai = head; ai; ai = ai->ai_next) { - sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); - if (sock < 0) err(EX_OSERR, "socket"); + if (sock < 0) { + sock = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); + if (sock < 0) err(EX_OSERR, "socket"); + } error = connect(sock, ai->ai_addr, ai->ai_addrlen); if (!error) break; |