Mercurial > hg > nginx-quic
view src/os/unix/ngx_darwin_init.c @ 7870:e169cce912c7 quic
Avoid retransmitting of packets with discarded keys.
Sections 4.10.1 and 4.10.2 of quic transport describe discarding of initial
and handshake keys. Since the keys are discarded, we no longer need
to retransmit packets and corresponding queues should be emptied.
This patch removes previously added workaround that did not require
acknowledgement for initial packets, resulting in avoiding retransmission,
which is wrong because a packet could be lost and we have to retransmit it.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Mon, 18 May 2020 13:54:53 +0300 |
parents | 56fc55e32f23 |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> char ngx_darwin_kern_ostype[16]; char ngx_darwin_kern_osrelease[128]; int ngx_darwin_hw_ncpu; int ngx_darwin_kern_ipc_somaxconn; u_long ngx_darwin_net_inet_tcp_sendspace; ngx_uint_t ngx_debug_malloc; static ngx_os_io_t ngx_darwin_io = { ngx_unix_recv, ngx_readv_chain, ngx_udp_unix_recv, ngx_unix_send, ngx_udp_unix_send, ngx_udp_unix_sendmsg_chain, #if (NGX_HAVE_SENDFILE) ngx_darwin_sendfile_chain, NGX_IO_SENDFILE #else ngx_writev_chain, 0 #endif }; typedef struct { char *name; void *value; size_t size; ngx_uint_t exists; } sysctl_t; sysctl_t sysctls[] = { { "hw.ncpu", &ngx_darwin_hw_ncpu, sizeof(ngx_darwin_hw_ncpu), 0 }, { "net.inet.tcp.sendspace", &ngx_darwin_net_inet_tcp_sendspace, sizeof(ngx_darwin_net_inet_tcp_sendspace), 0 }, { "kern.ipc.somaxconn", &ngx_darwin_kern_ipc_somaxconn, sizeof(ngx_darwin_kern_ipc_somaxconn), 0 }, { NULL, NULL, 0, 0 } }; void ngx_debug_init(void) { #if (NGX_DEBUG_MALLOC) /* * MacOSX 10.6, 10.7: MallocScribble fills freed memory with 0x55 * and fills allocated memory with 0xAA. * MacOSX 10.4, 10.5: MallocScribble fills freed memory with 0x55, * MallocPreScribble fills allocated memory with 0xAA. * MacOSX 10.3: MallocScribble fills freed memory with 0x55, * and no way to fill allocated memory. */ setenv("MallocScribble", "1", 0); ngx_debug_malloc = 1; #else if (getenv("MallocScribble")) { ngx_debug_malloc = 1; } #endif } ngx_int_t ngx_os_specific_init(ngx_log_t *log) { size_t size; ngx_err_t err; ngx_uint_t i; size = sizeof(ngx_darwin_kern_ostype); if (sysctlbyname("kern.ostype", ngx_darwin_kern_ostype, &size, NULL, 0) == -1) { err = ngx_errno; if (err != NGX_ENOENT) { ngx_log_error(NGX_LOG_ALERT, log, err, "sysctlbyname(kern.ostype) failed"); if (err != NGX_ENOMEM) { return NGX_ERROR; } ngx_darwin_kern_ostype[size - 1] = '\0'; } } size = sizeof(ngx_darwin_kern_osrelease); if (sysctlbyname("kern.osrelease", ngx_darwin_kern_osrelease, &size, NULL, 0) == -1) { err = ngx_errno; if (err != NGX_ENOENT) { ngx_log_error(NGX_LOG_ALERT, log, err, "sysctlbyname(kern.osrelease) failed"); if (err != NGX_ENOMEM) { return NGX_ERROR; } ngx_darwin_kern_osrelease[size - 1] = '\0'; } } for (i = 0; sysctls[i].name; i++) { size = sysctls[i].size; if (sysctlbyname(sysctls[i].name, sysctls[i].value, &size, NULL, 0) == 0) { sysctls[i].exists = 1; continue; } err = ngx_errno; if (err == NGX_ENOENT) { continue; } ngx_log_error(NGX_LOG_ALERT, log, err, "sysctlbyname(%s) failed", sysctls[i].name); return NGX_ERROR; } ngx_ncpu = ngx_darwin_hw_ncpu; if (ngx_darwin_kern_ipc_somaxconn > 32767) { ngx_log_error(NGX_LOG_ALERT, log, 0, "sysctl kern.ipc.somaxconn must be less than 32768"); return NGX_ERROR; } ngx_tcp_nodelay_and_tcp_nopush = 1; ngx_os_io = ngx_darwin_io; return NGX_OK; } void ngx_os_specific_status(ngx_log_t *log) { u_long value; ngx_uint_t i; if (ngx_darwin_kern_ostype[0]) { ngx_log_error(NGX_LOG_NOTICE, log, 0, "OS: %s %s", ngx_darwin_kern_ostype, ngx_darwin_kern_osrelease); } for (i = 0; sysctls[i].name; i++) { if (sysctls[i].exists) { if (sysctls[i].size == sizeof(long)) { value = *(long *) sysctls[i].value; } else { value = *(int *) sysctls[i].value; } ngx_log_error(NGX_LOG_NOTICE, log, 0, "%s: %l", sysctls[i].name, value); } } }