| 14,9 → 14,26 |
|---|
| #include "net.h" /* include self for control */ |
| |
| |
| /* if there is enough memory, net_connect() will try setting up a tcp window |
| * larger than the WATT32's default of only 2K |
| * on my system's DOSEMU install the relation between tcp buffer and download |
| * speed were measured as follows (this is on a 4 Mbps ADSL link): |
| * 2K = 20 KiB/s |
| * 4K = 51 KiB/s |
| * 8K = 67 KiB/s |
| * 9K = 98 KiB/s |
| * 10K = 98 KiB/s |
| * 16K = 96 KiB/s |
| * 32K = 98 KiB/s |
| * 60K = 98 KiB/s |
| */ |
| #define TCPBUFF_SIZE (16 * 1024) |
| |
| |
| struct net_tcpsocket { |
| tcp_Socket *sock; |
| tcp_Socket _sock; /* watt32 socket */ |
| char tcpbuff[1]; |
| }; |
| |
| |
| 46,7 → 63,7 |
|---|
| |
| |
| struct net_tcpsocket *net_connect(const char *ipstr, unsigned short port) { |
| struct net_tcpsocket *resultsock; |
| struct net_tcpsocket *resultsock, *resizsock; |
| unsigned long ipaddr; |
| |
| /* convert ip to value */ |
| 57,9 → 74,6 |
|---|
| if (resultsock == NULL) return(NULL); |
| resultsock->sock = &(resultsock->_sock); |
| |
| /* explicitely set user-managed buffer to none (watt32 will use its own internal buffer) */ |
| sock_setbuf(resultsock->sock, NULL, 0); |
| |
| if (!tcp_open(resultsock->sock, 0, ipaddr, port, NULL)) { |
| sock_abort(resultsock->sock); |
| free(resultsock); |
| 66,6 → 80,15 |
|---|
| return(NULL); |
| } |
| |
| /* set user-managed buffer if possible (watt32's default is only 2K) |
| * this must be set AFTER tcp_open(), since the latter rewrites the tcp |
| * rx buffer */ |
| resizsock = realloc(resultsock, sizeof(struct net_tcpsocket) + TCPBUFF_SIZE); |
| if (resizsock != NULL) { |
| resultsock = resizsock; |
| sock_setbuf(resultsock->sock, resultsock->tcpbuff, TCPBUFF_SIZE); |
| } |
| |
| return(resultsock); |
| } |
| |